Important questions for Class 10th Biology

Biology Class 10th  – OBJECTIVE (2022)

(1) In which disease, the walls of alveoli are destructed?

(A) Bronchitis

(B) Emphysema

(C) Pneumonia

(D) Asthma


(2) What is the normal p4 of blood?

(A) 6.35 – 7.45

(B) 7.35 – 7.45

(C) 6.35 – 6.45

(D) 7.35 – 8.46


(3) Which love is concerned with hearing and email?

(A) Frontal

(B) Parietal

(C) Occipetal

(D) Temporal


(4) What is the number of Human’s facial bones?

(A) 14

(B) 22

(C) 24

(D) 26


(5) Name of Individual unit of corola is:

(A) Sepal

(B) Petal

(C) Carpal

(D) Stamen


(8) The first structure that emerges from the radicle is known as:

(A) Root

(B) Stem

(C) Leaf

(D) Legume


(7) Cytosine pairs with:

(A) Thymine

(B) Adenine

(C) Guanine

(D) Uracil


(8) When Watson-Crick Model of DMA was proposed?

(A) 1922 AD

(B) 1933 AD

(C) 1953 AD

(D) 1983 AD


(9) Break down of Urea and Uric acid to ammonia is called:

(A) Assimilation

(B) Nitrogen fixation

(C) Ammonification

(D) Biological fixation


(10) Which one is secondary consumer?

(A) Cattle

(B) Fox

(C) Deer

(D) Rabbit


(11) An anti-viral protein is:

(A) Interferon

(B) Insulin

(C) Urokinase

(D) Thymosin


(12) Pain reducing drugs are:

(A) Sedatives

(B) Antiseptics

(C) Analgesics

(D) Antibiotics

SUBJECTIVE (2022) – Short Questions

  1. Write difference between Pharynx and Goths.
  2. Define lenticels and stomata.
  • ‘Write definition and function of Alveoli.
  1. Write major causes of kidney stone.
  2. Write difference between renal pyramids and renal pelvis.
  3. Define stimulus and response.
  • Define saltatory impulse.
  • Witte two major functions of spinal cord.
  1. What are ligaments?
  2. Define Endoskeleton.
  3. What is pollination and cross pollination?
  • Define germination.
  • ‘What is incomplete dominance?
  • Define genetics.
  1. Write difference between artificial and natural selection.
  • What is transcription?
  • Define consumer and give one example.
  • Define trophic level.
  • Define Biogeochemical Cycle.
  1. Differentiate between food chain and food web.
  • Write two uses of formic acid.
  • State first step of genetic engineering.
  • What are sedatives?
  • How bacteria get resistance against antibiotics?

Long Questions

  1. Explain the osmoregulatory function of kidney in detail.
  2. Explain the types of joints with examples.
  3. Define hormone and write a note on following
  4. Endocrine glands: (i) Thyroid gland (ii) Pancreas
  5. Write a complete note on binary fission.
  6. Write a note on Single-Cell Protein.
  7. Describe the sources of Medicinal Drugs.


(1) In aerobic respiration ____is used.

  • Nitrogen (B) Oxygen                        (C) Hydrogen                    (D) Carbon


(2) Which organ is protected by last two ribs in man?

(A) Stomach                       (B) Heart                             (C) Liver                               (D) Kidney


(3) Which separates middle ear from the inner ear?

(A) Oval window              (B) Malleus                         (C) Incus                              (D) Stapes


(4) Babies are born with about ___ soft bones.

(A) 300                                  (B) 310                                  (C) 320                                  (D) 330


(5) Yeast reproduces asexually by:

(A) Binary fission              (B) Fragmentation           (C) Budding                        (D) Spore formation


(6) Inside testes, where sperms are produced?

(A) Vas deferens              (B) Sperm duct                  (C) Collecting ducts         (D) Seminiferous tubules


(7) When James Watson and Francis Cock proposed the structure of DNA model?

(A) 1960 AD                        (B) 1953 AD                         (C) 1956 AD                         (D) 1958 AD


(8) In artificial selection, the bred animals are known as:

(A) Breeds                          (B) Vector                           (C) Cultivars                        (D) Herbivores


(9) Which one of the following is the abiotic component of the ecosystem?

(A) Producers                    (B) Herbivores                  (C) Water                           (D) Carnivores


(10) Which one of the following plant is parasite?

(A) Pitcher plant               (B) Sundew                        (C) Venus flytrap              (D) Cuscuta


(11) When was the complete map of human genome published?

(A) 2000 AD                        (B) 2002 AD                         (C) 2004 AD                         (D) 2006 AD


(12) Which one of the following is not an addictive drug?

(A) Sedatives                     (B) Morphine                     (C) Codeine                         (D) Tetracycline

SUBJECTIVE (2022) – Short Questions

  1. What is meant by gaseous exchange?
  2. Describe the function of nasal cavity.
  • What is meant by double pneumonia?
  1. What is meant by Thermoregulation?
  2. Describe the causes of kidney stones.
  3. What are co-ordinators?
  • What is meant by nodes of ranvier?
  • Describe the functions of spinal cord.
  1. Define Osteocytes.
  2. Define Joint. Write names of its major types
  3. Define Binary fission and give one example.
  • Define cloning.
  • Define homozygous and heterozygous genotype.
  • Define transcription.
  1. Write down the names of nitrogenous bases of DNA.
  • Define Mendel’s Law of Segregation.
  • Define ecosystem.
  • What is meant by pyramid of numbers?
  • What is meant by assimilation in nitrogen cycle?
  1. Why should we reduce the use of natural resources?
  • Write uses of glycerol.
  • Write definition of fermentation with reference to biotechnology.
  • What is meant by medicinal drug?
  • What are broad spectrum and narrow spectrum antibiotics?

Long Questions

  1. Describe the osmoregulatory function of kidney.
  2. What is Cartilage? Describe its three types.
  3. Write a complete note on forebrain.
  4. Write a complete note on budding.
  5. Describe the objectives of genetic engineering.
  6. Describe drug addiction and its associated problems in detail.


(1) How many pairs of ribs a human body has?

(A) 2                                     (B) 10                                    (C) 5                                       (D) 12


(2) Percentage of water in human urine is:

(A) 70%                                                (B) 75%                                (C) 90%                                (D) 95%


(3) The smallest bone in human body is:

(A) Stapes                           (B) Malleus                         (C) Incus                              (D) Thigh bone


(4) Cells of cartilage are called:

(A) Collagen                       (B) Chondrocytes             (C) Osteocytes                  (D) Tendon


(5) Vegetative propagation occurs in Bryophyllum by:

(A) Root                               (B) Stem                              (C) Leaves                           (D) Seed


(6) Whose part is style?

(A) Sepal                              (B) Petal                               (C) Stamen                         (D) Carpal


(7) How many hydrogen bonds are present between adenine and thymine?

(A) 2                                      (B) 3                                       (C) 4                                       (D) 5


(8) Allele which is not expressed is called:

(A) Dominant                     (B) Gene                             (C) Recessive                     (D) Locus 1


(9) Lion is:

(A) Herbivore                    (B) Carnivore                     (C) Omnivore                     (D) Decomposer


(10) All are carnivore plants except:

(A) Sun dew                       (B) Pitcher plant               (C) Venus fly trap             (D) Cuscuta


(11) When did lan Wilmut produced the sheep Dolly?

(A) 1997 AD                        (B) 1967 AD                        (C) 2002 AD                         (D) 1970 AD


(12) Antibiotics are used to kill:

(A) Virus                              (B) Bacteria                         (C) Alga                                                (D) Protozoan



Short Questions

  1. What is double pneumonia? Write the name of its causal bacteria.
  2. Define Lenticels.
  • Write the effects of smoking on teeth.
  1. What are Hydrophytes plants? Give example.
  2. Write the causes of kidney stone.
  3. Define feedback mechanism.
  • What is Hippocampus? Write its importance.
  • What is the difference between Rods and Cones?
  1. What is the difference between compact bone and spongy bone?
  2. Define joint and write name of its types.
  3. Define binary fission and give an example.
  • Define calyx.
  • What is genotype? Write down its types.
  • Write down names of nitrogen bases.
  1. Define homologous chromosomes.
  • Define gene.
  • Name the different levels of ecological organization.
  • What are herbivores?
  • Define commensalism.
  1. What is meant by ecological pyramid?
  • Give an example how biotechnology is helping for better environment?
  • Name the breaking enzyme and joining enzyme.
  • What is pharmacology?

Long Questions

  1. Differentiate between broad-spectrum antibiotics and narrow-spectrum antibiotics.
  2. Explain the steps involved in formation of urine in the kidneys.
  3. Explain antagonism in muscle action selecting biceps and triceps as example.
  4. White a detailed note on Reflex action
  5. Explain the process of gametes formation in animals.
  6. Describe any five achievements of genetic engineering.
  7. Describe the resistance in bacteria against antibiotics.

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