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[OBJECTIVE]
Subject: Biology
Time Allowed: 10 Minutes
Maximum Marks: 10
NOTE: Attempt this Paper on this Question Sheet only. Please encircle the correct option. Division of marks is given in front of each question. This Paper will be collected back after expiry of time limit mentioned above.
Part-I Encircle the right answer, cutting and overwriting is not allowed. (1×10=10)
Pectin is an example of
A) Disaccharides B) Polysaccharides
C) Monosaccharide D) Oligosaccharides
DNA is the carrier of
A) Ribozymes B) Genetic Markers
C) Nuclear Material D) Genetic Message
The protection of an internal environment from the harms of fluctuations is the definition of which of the followings?
A) Osmoregulation B) Excretion
C) Thermoregulation D) Homeostasis
Endoplasmic reticulum (ER) is a complex _________ membrane system.
A) Two dimensional B) Four Dimensional
C) Three Dimensional D) Ten Dimensions
Plants growing in waterlogged soils and aquatic environments contain tissues.
A) Storage parenchyma B) Pseudoparenchyma
C) Aerenchyina D) Chromoptast Parenchyma
A nerve is a _______________.
A) Bundles of axons and dendrites of axons B) collection of neurons
C) Concentration of dendrites and axons D) None of these
Thyroid glands produce waste __________________.
A) Tri-iodothyronine B) T3, T4 and calcitonin
C) Calcitonin D) Tetraiodothyronine
Mitosis is divided into ___________.
A) Interphase B) Karyokinesis
C) Cytokinesis D) Band C
Which of these is incorrectly matched?
A) Protoplast- plant cell engineering B) DNA polymerase- PCR
C) DNA ligase- mapping human chromosomes D) RFLPS-DNA finger printing
Which of the biomass has been increased in area by human activities?
A) Savana B) Grassland
C) Desert D) Coniferous
[SUBJECTIVE]
Subject: Biology
Time Allowed: 2 Hours 45 Minutes
Maximum Marks: 50
NOTE: ATTEMPT THIS (SUBJECTIVE) ON THE SEPARATE ANSWER SHEET PROVIDED.
Part-II Give short answers of the following:. (2×10=20)
Q#1: What is the Difference between CNS and PNS?
Q#2: What do you know about biodiversity? Also define acid rain”?
Q#3: What is the difference between endangered species and threatened species?
Q#4: Differentiate between dominance and epistasis.
Q#S: Why interphase is defined as a resting phase?
Q#6: What is the function of RNA polymerase in transcription?
Q#7: Define Photoperiod sin and its effects
Q#8: Write down the names of Mower parts with labeled diagram.
Q#9: Write down main differences between auxins and Cytokinins.
Q#10. What is neuron? Draw its structure.
Part-III Give brief answers of the following. (3×10=30)
Q#3: Define Osmoregulation, Describe Osmoregulation in plants as well as in animals.
Q#4. Define specialized plant cells. Also explain significance of secondary growth.
Q#5: Write a note on Hypothalamus and Pituitary Gland.
Q#6: What is a Gene? Also describe haw DNA encodes protein structure’?
Q#7: Why meiosis is called reductional division and what is its significance?
