Botany MCQs

Botany MCQs

1. From the Krebs cycle, NADH is equal to:
A. 7 ATP
B. 5 ATP
C. 3 ATP
D. 9 ATP

Answer - Click Here:
C

2. What is a nucleoside?
A. Pyramidine + purine + phosphate
B. Purine + sugar + phosphate
C. purine/pyramidine + phosphate
D. purine/pyramidine + sugar

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D

3. The final c acceptor in mitochondrial electron transport chains is:
A. NAD+
B. FAD
C. H2O
D. None of these

Answer - Click Here:
D

4. ________ includes feather stigma in it:
A. Wheat
B. Poppy
C. Pea
D. Hibiscus

Answer - Click Here:
A

5. Water movement from cell to cell through plasmadesmata is:
A. Facilitated
B. Apoplastic
C. Transmembrane
D. Symplastic

Answer - Click Here:
B

6. What is the process of water exudation through hydathodes called:
A. Evaporation
B. Bleeding
C. Guttation
D. Transpiration

Answer - Click Here:
C

7. The CO2 fixation mechanism in maize plant is known as:
A. CAM pathway
B. C3 – C4 intermediate
C. C3 pathway
D. C4 pathway

Answer - Click Here:
D

8. In which family, basal placentation is found?
A. Fabaceae
B. Asteraceae
C. Malvaceae
D. Solanaceae

Answer - Click Here:
B

9. What are the salt-loving plants called:
A. Xerophytes
B. Mesophytes
C. Glycophytes
D. Halophytes

Answer - Click Here:
D

10. Where are the insectivorous plants grow:
A. Carbohydrate-rich soil
B. Potassium deficient soil
C. Nitrogen deficient soil
D. Nitrogen-rich soil

Answer - Click Here:
C

11. The water potential of the system _________ with the addition of the solution to a liquid system:
A. Decreases
B. Increases
C. Remains variable
D. Remains stable

Answer - Click Here:
A

12. What does benthos mean in a pond ecosystem?
A. All phytoplankton’s
B. Primary consumes in the bottom of a pond
C. Large fishes eating small ones
D. Zooplanktons on a water surface

Answer - Click Here:
B

SET 2: Botany MCQs

SET 2: Botany MCQs
Method of water exudation through hydathodes is called__________:
A. Guttation
B. Transpiration
C. Evaporation
D. Bleeding

Answer - Click Here:
A

Basal placentation is originate in the___________ family?
A. Malvaceae
B. Solanaceae
C. Fabaceae
D. Asteraceae
Answer - Click Here:
D

Insectivorous plants grow in which of the following soil?
A. Nitrogen rich soil
B. Nitrogen deficient soil
C. Potassium deficient soil
D. Carbohydrate rich soil
Answer - Click Here:
B

In a pond ecosystem, benthos means________?
A. Zooplanktons on water surface
B. Large fishes eating small ones
C. Primary consumes in the bottom of a pond
D. All phytoplankton’s
Answer - Click Here:
C

Eyes on potato tubers signify¬______________?
A. Rootlets
B. Nodes with buds
C. Scars
D. Sutures
Answer - Click Here:
B

Fungus without mycelium is known as ?
A. Puccinia
B. Rhizopus
C. Saccharomyces
D. Mucor
Answer - Click Here:
C

In photorespiration, The organelles involved which of the followings?
A. Glyoxysomes, chloroplast and mithondria
B. Chloroplast, peroxisome and glythisome
C. Mitochondria, peroxisome and glyoxysomes
D. Chloroplast, mitochondria and peroxisome
Answer - Click Here:
D

? X l74 has__________ DNA
A. Single stranded DNA
B. Single stranded RNA
C. Double stranded RNA
D. Double stranded DNA
Answer - Click Here:
A

Floridean starch is found in which of the following?
A. Chlorophyceae
B. Myxophyceae
C. Phaeophyceae
D. Rhodophyceae
Answer - Click Here:
D

The hormone reducing transpiration rate by inducing stomatal closure is know as:
A. ABA
B. Ethylene
C. Cytokipin
D. Auxin
Answer - Click Here:
A

In bryophotes the female sex organ is called__________?
A. Archegonium
B. Antheridium
C. Carpogonium
D. Ascogonium
Answer - Click Here:
A

Pigment involved in photo morphogenetic movements is called ________:
A. Cytochrome
B. Phytochrome
C. Chromatin
D. Vernalin
Answer - Click Here:
B

First CO2receptor in C4plants is________ from the following?
A. PGA
B. PEP
C. RuBD
D. OAA
Answer - Click Here:
B

In onion, the swollen underground structure is__________?
A. A. Root
B. Rhizome
C. Bulb
D. Tuber
Answer - Click Here:
C

Movement of leaves of sensitive plant, Mimosa pudica are due to_______ ?
A. Thernonasty
B. Seisnonasty
C. Hydrothpism
D. Chemo nasty
Answer - Click Here:
D

Fragrant flowers with well-developed nectarines are an adaptation for ______from the following?
A. Zoophily
B. Anemophily
C. Entornophily
D. Hydfophily
Answer - Click Here:
C

Cheese and yoghurt are products of?
A. Pasteurization
B. Fermentation
C. Dehydration
D. Distillation
Answer - Click Here:
B

Colchicines bring about__________?
A. Polyploidy
B. Cell division
C. Cell elongation
D. Cell differentiation
Answer - Click Here:
A

Select the components of an ecosystem from the following?
A. Trees and weeds
B. Plants and animals
C. Man and plants
D. Biotic and abiotic
Answer - Click Here:
D

The two great industrial tragedies MIC and Chemobyl occurred respectively in_________?
A. Bhopal 1984, Ukraine 1986
B. Madhya Pradesh 1980, Russia 1990
C. Bhopal 1980, Ukraine 1984
D. Ukraine 1990, Bhopal 1986
Answer - Click Here:
A

Tyloses are _________?
A. Lactiferous channels
B. Secretory cells
C. Sieve plates
D. Tracheal plugs plugging the lumen of vessels and tracheids
Answer - Click Here:
D

10% energy transfer law of food chain was given by_________?
A. Lederberg
B. Lindmann
C. Weismann
D. Lindley
Answer - Click Here:
B

Reaction center of photo system-I in green plants is ______?
A. P680
B. P690
C. P700
D. P780
Answer - Click Here:
B

Number of cotyledons in Zea mays, Cycas and Pinus individually are_______?
A. 1, 2, 4
B. 1, 2, many
C. 2, 2, many
D. 2, 1, 4
Answer - Click Here:
B

Double fertilization is found in which of the following?
A. Bryophytes
B. Angiosperms
C. Gymnosperms
D. Pteridophytes
Answer - Click Here:
B

If a sporangium derived from a single cell is called___________?
A. Leptosporangiate
B. Eusporangiate
C. Heterosporangiate
D. None of the above
Answer - Click Here:
A

The term water potential was proposed by ______ which of the following?
A. Godlewski
B. Slatyer and Taylor
C. Dixon and Jolly
D. J. C. Bose
Answer - Click Here:
B

A plant has two types of haploid structures in its life cycle is called _________ from the following?
A. Haplobiontic
B. Diplobiontic
C. Haplontic
D. Diplontic
Answer - Click Here:
A

Ribozyme is________?
A. enzyme
B. RNA with enzymatic activity
C. Hormone
D. Protein
Answer - Click Here:
B

A chain of amino acids joined by peptide bonds is called ________
A. Peptide chain
B. Polypeptide chain
C. Polyamino acid chain
D. Nucleotide chain
Answer - Click Here:
B

The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to Purchase fresh hybrid seed every year because of ______________?
A. Hybrid vigour is not long-standing due to inbreeding depression
B. It is always associated with 4ncreased heterozygosity
C. Government has accepted Dunkel’s proposals
D. None of these
Answer - Click Here:
A

Soil salinity is measured by_______ from the following?
A. Potometer
B. Porometer
C. Conductivity meter
D. Calorimeter
Answer - Click Here:
C

Which one of the following is the earliest land plant?
A. Rhynia
B. Cycas
C. Ulothrix
D. Synchytrium
Answer - Click Here:
A

The scutellum of the gram embryo is a________________?
A. Vestigial organ
B. Photosynthetic organ
C. Absorptive organ
D. Protective organ
Answer - Click Here:
A

In Bignonia eapreolata pollination is carried out by__________?
A. Bat
B. Bird
C. Insect
D. Wind
Answer - Click Here:
A

Fragrant flowers with well-developed nectarines are an adaptation for_________ from the following?
A. Anemophily
B. Ornithophily
C. Entamophily
D. Hydrophily
Answer - Click Here:
C

Genetic engineering is related with_______ of the following?
A. Eugenics
B. Euphenics
C. Euthenics
D. All of these
Answer - Click Here:
B

Floating roots are the characteristics feature of which of the following?
A. Viscum
B. Vanda
C. Cuscuta
D. Jussiaea
Answer - Click Here:
D

Various fungi are known to accumulate considerable quantities of divalent metals ___________?
A. Cd
B. Zn
C. Pb
D. All of these
Answer - Click Here:
D

The diameter of Z-DNA is______________
A. 34 A
B. 20A
C. 18A
D. 45A
Answer - Click Here:
C

The genes which remain confined to differential region of ‘Y’ chromosome, are called _______ genes.
A. Autosomal genes
B. Holandric genes
C. Sex linked genes
D. Mutant genes
Answer - Click Here:
B

The hormone responsible for ripening of fruits is called ___________?
A. Ethylene
B. Cytokinin
C. Auxin
D. ABA
Answer - Click Here:
A

Coir is the commercial product of coconuts__________?
A. Mesocarp
B. Pericarp
C. Endocarp
D. Endosperm
Answer - Click Here:
A

Polygenic genes show__________?
A. Different phenotype
B. Different genotype
C. Similar phenotype
D. Similar genotype
Answer - Click Here:
A

Select the correct statement:
A. Legumes are incapable of fixing nitrogen
B. Legumes fix nitrogen through bacteria living in fruits root
C. Legumes fix nitrogen only by bacteria present in nodules
D. None of the above
Answer - Click Here:
C

Hormogonia are the vegetative reproductive structures of_______ from the following?
A. Chlamydomonas
B. Spirogyra
C. Oscillatoria
D. Ulothrix

Answer - Click Here:
C

Azotobacter and Beijerinckia are the examples of________ from the following?
A. Symbiotic nitrogen-fixers
B. Non-symbiotic nitrogen-fixers
C. Ammonifying bacteria
D. Disease causing bacteria
Answer - Click Here:
B

Smilax a climbing genus belongs to______ of the following?
A. Cucurbitaceae
B. Solanaceae
C. Liliaceae
D. Cruciferae
Answer - Click Here:
C

If a dwarf pea plant was treated with gibberellic acid, it became as tall, as tall pea plants. If these pea plants are crossed with pure tall pea plants, what will be the phenotypic ratio in F1 generation?
A. All dwarf plants
B. 50% tall and 50% dwarf plants
C. 75% tall and 25% dwarf plants
D. 100% tall plants
Answer - Click Here:
D

Coichicine is obtained from Colchicum autumnal. It belongs to family
A. Leguminoceae
B. Solanaceae
C. Asteraceae
D. Liliaceae
Answer - Click Here:
D

Moll’s experiment clarifies that___________
A. Carbon dioxide is essential for photosynthesis
B. Chlorophyll and water are necessary for photosynthesis
C. Light and water are essential for photosynthesis
D. All of the above are correct
Answer - Click Here:
A

Energy transfer from one traphic level to other in a food chain is_____%?
A. 10%
B. 20%
C. 1%
D. 2%
Answer - Click Here:
A

Stem is reduced in______ of the following?
A. Rhizome
B. Corm
C. Bulb
D. Tuber
Answer - Click Here:
C

Heterophilly of Limnophila is_______?
A. Environmental
B. Developmental
C. Habitual
D. Adaptive
Answer - Click Here:
D

Synandrous condition is the fusion of _________?
A. Filaments only
B. Both filaments and anthers
C. Anthers only
D. Petals
Answer - Click Here:
B

Which one of the following yields sunn hemp?
A. Corchorus
B. Hibiscus-.
C. Crotolaria
D. Cannabis
Answer - Click Here:
C

Rod-shaped elongated thick-walled lignified dead cells found in seed coat of pulses
(Legumes) are_______________ .Select from the following.
A. Macrosciereids
B. Astrosclereids
C. Brachysclereids
D. Osteosclereids
Answer - Click Here:
A

Decot root having more than six vascular bundles are found in _______ of the following?
A. Pea
B. Sunflower
C. Ficus
D. Ranunculus
Answer - Click Here:
C

WHICH OF THE FOLLOWING REGULATOR GENE CONTROLS CHEMICAL SYNTHESIS?
A. Inhibiting transcription of mRNA
B. Inhibiting enzymes
C. Inhibiting passage of mRNA
D. Inhibiting substrate enzyme reaction
Answer - Click Here:
A

‘Illegitimate crossing over’ is another _______ term.
A. Transition
B. Transversion
C. Reciprocal translocation
D. None of the above
Answer - Click Here:
C

A substance unrelated to substrate but capable of reversibly changing activity of enzyme by binding to a site other than active site is called_______?
A. Competitive inhibitor
B. Non-competitive inhibitor
C. Catalytic inhibitor
D. Allosteric modulator/inhibitor
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D

Golgi apparatus is absent in which of the following?
A. Higher plants
B. Yeast
C. Bacteria and blue-green algae
D. Liver cells
Answer - Click Here:
C

Which one of the following is common amongst nucleus, chloroplast and mitochondria?
A. Cristae
B. Thylakoids
C. Nucleic acid
D. Carbohydrate metabolism
Answer - Click Here:
C

From the following________ is the a reproductive structure of Sporocarp ?
A. Some algae
B. Some aquatic ferns
C. Angiosperms having spores
D. Bryophytes
Answer - Click Here:
B

Pond ecosystem shows _______?
A. Inverted pyramid of number
B. Inverted pyramid of biomass
C. Upright pyramid of biomass
D. Inverted pyramid of energy
Answer - Click Here:
B

Under anaerobic conditions, bacterium Pseudomonas changes__________ Select from the following?
A. Nitrate to molecular nitrogen
B. Nitrate to ammonia
C. Nitrate to nitrite
D. Nitrite to nitrate
Answer - Click Here:
A

Deciduous forests have _________ from the following?
A. Variety of grasses
B. Broad-leaved trees
C. narrow-leaved trees
D. Variety of crocodiles
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B

__________ is the Physiologically active form of Phytochrome ?
A. P730/Fr
B. P660/Pr
C. P700
D. P680
Answer - Click Here:
A

The archesporium of ovule is _________ from the following ?
A. Single celled terminal
B. Single celled central
C. Single celled hypodermal
D. Single celled lateral
Answer - Click Here:
C

Which is correct statement?
A. Seed can not be formed after on fertilization
B. Seed is formed after one fertilization
C. Seed is formed before double fertilization
D. Fruit is produced after double fertilization
Answer - Click Here:
C

Hormone used in tissue culture for better growth is_____________?
A. Auxin
B. Gibberellin
C. Cytokinin
D. Vernalin
Answer - Click Here:
D

Grafting is employed for better and quicker yield of varieties of _______?
A. Apple
B. Mango
C. Citrus
D. Tea
Answer - Click Here:
A

Primary root is__________ of following?
A. Positively geotropic
B. Positive hydrotropic
C. Negative geotropic
D. Negative hydrotropic
Answer - Click Here:
B

Cholodny-Went theory is connected with________ of the following?
A. Photo morphogenesis
B. Phototropism
C. Nastic movement
D. Geotropism
Answer - Click Here:
C

Photorespiration is related to which of the following?
A. Chloroplast
B. Mitochondria
C. Peroxisome
D. Glyoxysomes
Answer - Click Here:
C

2-4-diphenoxyacetic acid is a________?
A. Herbicide
B. Weedicide
C. Pesticide
D. Fungicide
Answer - Click Here:
B

Ergot is obtained from which of the following?
A. Albugo
B. Yeast
C. Claviceps Purpurea
D. Alternaria
Answer - Click Here:
C

B-DNA is___________?
A. Antiparallel and right handed
B. Antiparallel and left handed
C. Parallel and right handed
D. Parallel and left handed
Answer - Click Here:
A

Stomata in bryophytes are present in the of__________?
A. Capsule
B. Leaf
C. Stem
D. Seta
Answer - Click Here:
A

Haploid cells belong to _______ of the following?
A. Integument, pollen grain, endosperm
B. Embryo, endosperm and pollen grain
C. Megaspore, pollen grain, antipodal
D. Integument, pollen grain and antipodal
Answer - Click Here:
C

Rubber is commercially obtained from which of the following?
A. Euphorbia
B. Betula
C. Hibiscus
D. Pinus
Answer - Click Here:
A

Endoplasmic reticulum remain in continuation with______ of the following?
A. nucleus
B. Ribosomes
C. Mitochondria
D. Golgi bodies
Answer - Click Here:
A

Chondriosome is discovered by_______ of the following?
A. Benda
B. Messelson
C. Dujardin
D. Taylor
Answer - Click Here:
A

The cell wall of both bacteria and cyanobactena contains________ of the following?
A. Lipid
B. Pectin
C. Protein
D. muramic acid
Answer - Click Here:
D

Development of saprophyte from gametophyte, is known as__________?
A. Apomixis
B. Apospory
C. Apogamy
D. Dip1ospory
Answer - Click Here:
C

Chiropterophily is seen in_______ of the following?
A. Kigelea
B. Salvia
C. Orchid
D. Vallesneria
Answer - Click Here:
A

Thermal algae can live in___________?
A. Saline soil
B. Hot water streams of 70°C
C. Deserts
D. Snow balls
Answer - Click Here:
B

Law of limiting factor was given by______ of the following?
A. Blackman
B. Hill
C. Taylor
D. Amon
Answer - Click Here:
A

Haploid plants can be obtained from which of the following?
A. Leaf culture
B. Bud culture
C. Root culture
D. Anther culture
Answer - Click Here:
D

Embryo sac represents____________?
A. Megaspore
B. Megagamete
C. Megasporophyll
D. megagametophyte
Answer - Click Here:
D

Deficiency of molybdenum causes by ______?
A. Wilting
B. Mottling
C. Reclamation
D. Necrosis
Answer - Click Here:
B

The first reaction in photorespiration is_______ of the following?
A. Decarboxylation
B. Oxygenation
C. Carboxylation
D. Phosphorylation
Answer - Click Here:
B

The specific characters of C4 plant is_________ of the following?
A. Bulliform cells
B. Kranz anatomy
C. Parallel venation
D. Isobilateral leaf
Answer - Click Here:
B

The ovule in which embryo sac become horse shoe shaped in_______ of the following?
A. Amphitropous
B. Camphylotropous
C. Orthotropous
D. Anatropous
Answer - Click Here:
A

Caruncle develops-from ______ of the following?
A. Outer integument
B. Ctyledon
C. Funiculus
D. Inner integuments
Answer - Click Here:
A

Coir of commerce is obtained from______ of the following?
A. Endocarp of coconut
B. Mesocarp of coconut
C. Stem of jute
D. Leaves of coconut
Answer - Click Here:
D

In a national park protection is provided to______?
A. Entire ecosystem
B. Flora and fauna
C. Fauna only
D. Flora only
Answer - Click Here:
B

Morphine is obtained from_____ of the following?
A. Aconitum nacelles
B. Papaver somniferum
C. Rauwolffia serpentine
D. Cinchona officinalis
Answer - Click Here:
B

Azides and cyanide inhibit in which of the following?
A. Metaphase
B. Prophase
C. Anaphase
D. Telophase
Answer - Click Here:
B

Cell organelle covered by single unit membrane is_______ of the following?
A. Glyoxisome
B. Lysosome
C. Peroxisomes
D. All of these
Answer - Click Here:
D

Blue-green alga that causes red blooms is __________ of the following?
A. Anabaena
B. Gleacapsa
C. Trichodesmium
D. Nostoc
Answer - Click Here:
C

Gingerly oil (till) is got from________ of the following options?
A. Linus usitatissimum
B. Cocos nucifera
C. Sesamum indicum
D. Brassica rapa
Answer - Click Here:
C

In meios-I, the Centro mere undergoes_______?
A. The division between anaphase and Interphase
B. The division between prophase and metaphase
C. None of these
D. No division
Answer - Click Here:
D

which one of the following is Prokaryotic genetic material?
A. Liner DNA + his tones
B. Circular DNA + his tones
C. Liner DNA without his tones
D. Circular DNA without his tones
Answer - Click Here:
D

Mary’s biological concept of species is mainly based on ____________ of the following?
A. Morphological traits
B. Reproductive isolation
C. Modes of reproduction
D. Morphology and reproduction
Answer - Click Here:
A

NADH is produced in________ of the following?
A. Photosystem-II
B. Photosystem-I
C. Glycolysis
D. Both (a) and (b)
Answer - Click Here:
C

Abscission layer developed during leaf fall is made of________?
A. Cork cells
B. Sclerenchymatous cells
C. Both a and b
D. Parenchymatous cells
Answer - Click Here:
D

The process by which the amount of DNA, RNA, and protein can be known at a time is called?
A. Cell fractionation
B. Autoradiography
C. Phase-contrast microscopy
D. Tissue culture
Answer - Click Here:
B

Retort cells are found in which of the following?
A. Funaria
B. Pogonatum
C. Sphagnum
D. Porella
Answer - Click Here:
C

The net gain of energy from one gram mole of glucose during aerobic respiration is________ of the following?
A. 2 ATP
B. 4 ATP
C. 38 ATP
D. 40 ATP
Answer - Click Here:
C

Chief function of phloem is conduction of __________.
A. Food
B. Minerals
C. Water
D. Air
Answer - Click Here:
A

Pyrenoids are the centers for formation of_______ from the following options?
A. Proteins
B. Enzymes
C. Fat
D. Starch
Answer - Click Here:
D

Sexual reproduction in Rhizopus occurs through which of the following?
A. Gametangial contact
B. Gametangial copulation
C. Planogametic copulation
D. Spermatogamy
Answer - Click Here:
B

Organelles involved in photorespiration are
A. Mitochondria, chloroplasts and ribosomes
B. Mitochondria, Peroxisomes and chloroplasts
C. Mitochondria, nucleus and ribosomes
D. Mitochondria, proxisomes and glyoxisomes
Answer - Click Here:
B

Pith is produced by the activity of________ of the following?
A. Lateral metistem
B. Protodern
C. Procambium
D. Ground meristem
Answer - Click Here:
D

Which of the following tissue is present in leaves of Pinus conducts food and water laterally?
A. Transfusion tissue
B. Phloem
C. Xylem
D. Medullary rays
Answer - Click Here:
A

The site for light reaction of photosynthesis is_________ of the following?
A. Grana
B. Stoma
C. ER
D. Cytoplasm
Answer - Click Here:
D

Swollen placenta, oblique septum and conniving anthers are characteristics of family__________?
(a) Brassicaceae
(b) Asterácéae
(c) Poaceae
(d) Solatiaceae
Answer - Click Here:
D

Development of shoot and root is determined by which of the following?
A. Cytokinin and auxin ratio
B. Enzymes
C. Temperature
D. Plant nutrients
Answer - Click Here:
A

Pyramid of number in a grassland/true ecosystem is________?
A. Always inverted
B. Always upright
C. Both (A) and (B)
D. Spindle-shaped
Answer - Click Here:
B

The empirical formula for chlorophyll-a is__________?
A. C35 H72 O5N4 Mg
B. C65 H70 O6N4 Mg
C. C55 H72 O5N4 Mg
D. C45 H70 O6N4 Mg
Answer - Click Here:
C

Which one of the following yields oil from seeds and orange dye from petals?
A. Helioanthus annus
B. Calendulla officinalis
C. Carthamus tinctorius
D. Tagetus erecta
Answer - Click Here:
C

A fern differ from a moss in prossessing which of the following?
A. Swimming/flagellated anitherozoids
B. Flask-shaped archegonia
C. Independent Sporophyte
D. Independent gametophyte
Answer - Click Here:
C

The species of Pinus, seeds of which are edible is/ chilgoza comes from_________?
A. P. roxburghii
B. P. gerardiand
C. P. monophylla
D. P. sylvestris
Answer - Click Here:
B

A petroleum plant is_________?
A. Sugarcane
B. Maize
C. Potato
D. Euphorbia
Answer - Click Here:
D

Operon model of gene regulation and organisation of prokaryotes was proposed by__________?
A. Messelson and Stahl
B. Wilkins and Franklin
C. Beadle and Tatum
D. Jacob and Monod
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D

Artificial ripening of fruits is accomplished by treatment with______?
A. Sodium chloride
B. IAA
C. Ethylene gas
D. Kinetin
Answer - Click Here:
C

Individuals of species which occur in a particular area constitute_______?
A. Flora
B. Fauna
C. Population
D. Flora and fauna
Answer - Click Here:
C

Transpiration differs from evaporation in which of the following?
A. Rate of water loss
B. Transpiration is a physiological process while evaporation is physical process
C. Transpiration is physical process while evaporation is physiological process
D. Frequency of water loss
Answer - Click Here:
B

Arrangement of leaves on a stem branch is_______?
A. Venation
B. Venation
C. Ptyxis
D. Phyllotaxy
Answer - Click Here:
D

Water potential in leaf tissue is “positive” (near zero) during________ of the following?
A. Low transpiration
B. Excessive absorption
C. Excessive transpiration
D. Gestation
Answer - Click Here:
D

Cell ‘A’ with O.P = 10 atm and T.P =5 atm is in contact with cell ‘B’ having O.P = 15 atm and T.P = 12 atm. The flow of water will be_________?
A. From A to B
B. Equal flow
C. From B to A
D. No flow
Answer - Click Here:
C

Select the one from the following, which is pitcher plant________?
A. Drosera
B. Utricularia
C. Sarracenia
D. Aldrovanda
Answer - Click Here:
C

Nucleotide found free in the cells is________?
A. CAMP
B. AMP
C. ADP
D. ATP
Answer - Click Here:
D

Which one of the following does not occur is Seleaginella?
A. Heterospory
B. Hetorophylly
C. Homospory
D. Ligulate Leaves
Answer - Click Here:
C

Development of Sporophyte from gametophyte tissue without fusion of gametes is_________?
A. Apospory
B. ApogamY
C. Apomixis
D. Parthenogenesis
Answer - Click Here:
B

First bionisecticide developed on commercial scale was_______ of the following?
A. Quinine
B. DDT
C. Organophosphates
D. Sporeine
Answer - Click Here:
D

Cross between hybrid and recessive parent is _____ of the following?
A. Back cross
B. Test cross
C. Monohybrid cross
D. Dihybrid cross
Answer - Click Here:
B

Largest egg of plant kingdom belongs to which of the following ?
A. Cycas
B. Pinus
C. Psidium
D. Mangfera
Answer - Click Here:
A

Air spaces are present in ________?
A. Hydrophytes
B. Xerophytes
C. Mesophytes
D. Al1these
Answer - Click Here:
A

Thick cuticle, sunken stomates are found in leaves of_______ from the following?
A. Hydrophytes
B. Mesophytes
C. Xerophytes
D. Epiphytes
Answer - Click Here:
C

Cyanide resistant respiration is characteristic of________ ?
A. Viruses
B. Bacteria
C. Plants
D. Animals
Answer - Click Here:
C

Which of the following can function as carrier in active ion absorption?
A. Feradoxin
B. Plastoquinone
C. Cytochrome
D. Lecithin
Answer - Click Here:
D

In germinating castor seed the RQ is________ from the following?
A. One
B. More than one
C. Less than one
D. Infinite
Answer - Click Here:
C

The factor influencing process of flowerings is__________?
A. Amount of chlorophyll
B. Soil water
C. Soil pH
D. Photoperiod
Answer - Click Here:
D

The storage pathogen of rice is______ from the following?
A. Xanthomanas oryzae
B. Helminthosporiurn oryzae
C. Pyricularia oryzae
D. Calanoluca oryzae
Answer - Click Here:
D

The study of interelationship b/w species and its environment of a forest is called______?
A. Autecology
B. Syneocology
C. Forest ecology
D. Co-operation
Answer - Click Here:
A

In moss, the middle sterile part of capsule is called______?
A. Foot
B. Protonema
C. Columella
D. Spore sac
Answer - Click Here:
C

In fern, vascular bundles are which of the following?
A. Radial
B. Hadrocentric
C. Open
D. Leptocentric
Answer - Click Here:
B

Leptome is used for______ from the following?
A. Phloem
B. Fibres
C. Xylem
D. Parenhyma
Answer - Click Here:
A

In angiosperm, triple fusion is necessary for the formation of which of the following?
A. Embryo
B. Pollen
C. Endosperm
D. Leaf
Answer - Click Here:
C

biology repeated mcqs pdf book download

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