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Objective Questions

Latest EMRS PGT Biology Exam Question (Objective Questions), MCQ in English

Subjects : Subject Knowledge Test (Biology)

Question Bank EMRS PGT Biology Tier 2 Exam - English
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Subject Knowledge Test (Biology)

Question 1Single Answer
The respiratory quotient during cellular respiration would depend on
  1. A
    the nature of enzymes involved
  2. B
    the nature of the substrate
  3. C
    the amount of carbon dioxide released
  4. D
    the amount of oxygen utilised
Question 2Single Answer
Which of the following is not a green - house gas ?
  1. A
    Water vapour
  2. B
    Carbon monoxide
  3. C
    Methane
  4. D
    Oxygen
Question 3Single Answer
Both husband and wife have normal vision though their fathers were colorblind and mothers did not have any gene for colorblindness. The probability of their daughters becoming colorblind is
  1. A
    50%          
  2. B
    75%
  3. C
    0% 
  4. D
    25%
Question 4Single Answer
An animal, which has both exoskeleton and endoskeleton structures is a
  1. A
    fresh-water mussel
  2. B
    tortoise
  3. C
    frog
  4. D
    jelly fish
Question 5Single Answer
Identify the group, which includes animals all of which give birth to young ones directly?
  1. A
    Dolphin, kangaroo, bat, cat
  2. B
    Platypus, penguin, bat, hippopotamus
  3. C
    shrew, bat, kiwi, car
  4. D
    Lion, whale, ostrich, bat
Question 6Single Answer
Compare the statement A and B.
Statement A Blood sugar level falls rapidly after hepatectomy.
Statement B The glycogen of the liver is the principal source of blood sugar.
Select the correct description.
  1. A
    Both the statements A and B are correct and B is the reason for A
  2. B
    Statement A is correct and B is wrong
  3. C
    Statement A is wrong and B is correct
  4. D
    Both the statements A and B are correct and B is not the reason for A
Question 7Single Answer
What is/are true about heart wood?
(A) It does not help in water conduction.
(B) It is also called laburnum.
(C) It is dark in colour but very soft.
(D) It has tracheary elements which are filled with tannin, resin, etc.
  1. A
    B,C and D
  2. B
    A and D
  3. C
    B and D
  4. D
    A, B and C
Question 8Single Answer
Compare the statements A and B.
Statement A Auxins promote apical dominance by suppressing the activity of lateral buds.
Statement B In moriculature, periodic pruning of shoot tips is done to make mulberry plants bushy.
Select the correct description.
  1. A
    Both the statements A and B are correct and A is the reason for B
  2. B
    Statement A is correct and B is wrong
  3. C
    Statement A is wrong and B is correct
  4. D
    Both the statements A and B are correct and A is not the reason for B
Question 9Single Answer
Bryophytes resemble algae is the following aspects
  1. A
    Filamentous body, presence of vascular tissues and autotrophic nutrition
  2. B
    Differentiation of plant body into root, stem and leaves and autotrophic nutrition
  3. C
    Thallus like plant body, presence of roots and autotrophic nutrition
  4. D
    Thallus like plant body, lack of vascular tissues and autotrophic nutrition
Question 10Single Answer
Stoma opens, when
  1. A
    guard cells swell due to an increase in their water potential
  2. B
    guard cells swell by endosmosis duie to influx of hydrogen ions (protons)
  3. C
    guard cells swell by endosmosis due to efflux of potassium ions
  4. D
    guard cell swell due to a decrease in their water potential
Question 11Single Answer
Which of the following contain enzymes for cellular respiration ?
  1. A
    Dictyosomes
  2. B
    Endoplasmic reticulum
  3. C
    lysosomes
  4. D
    Mitochondria
Question 12Single Answer
Which one among the following nutrients is a strctural
  1. A
    Cell membrane
  2. B
    Plasma membrane
  3. C
    Cell wall
  4. D
    Nucleus
Question 13Single Answer
Which one among the following nutrients is a structural component of the cell wall of plants ?
  1. A
    Manganese
  2. B
    Potassium
  3. C
    Phosphorus
  4. D
    Calcium
Question 14Single Answer
Which of the following groups is present in animal cells ?
  1. A
    Mitochondria, Cell membrane, Cell wall, Cytoplasm
  2. B
    Chloroplasts, Cytoplasm, Vacuole, Nucleus
  3. C
    Nucleus, Cell membrane, Mitochondria, Cytoplasm
  4. D
    Vacuole, cell membrane, Nucleus, Mitochondria
Question 15Single Answer
For which among the following is not a true fruit ?
  1. A
    Apple
  2. B
    Date
  3. C
    Grape
  4. D
    Plum
Question 16Single Answer
Which one of the following is not a constituent of cell membrane ?
  1. A
    Cholesterol
  2. B
    Glycoplids
  3. C
    Proline
  4. D
    Phospholipids
Question 17Single Answer
The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in
  1. A
    S–phase
  2. B
    G1–phase
  3. C
    G2–phase
  4. D
    M-phase
Question 18Single Answer
During which stage of mitosis does cytokinesis usually occur in animals ?
  1. A
    Phophase
  2. B
    Metaphase
  3. C
    Anaphase
  4. D
    Telophase
Question 19Single Answer
Lysosome arises from
  1. A
    endoplasmic reticulum
  2. B
    golgi apparatus
  3. C
    nucleus
  4. D
    mitochondria
Question 20Single Answer
The correct sequence of cell cycle is
  1. A
    S, G1, G2, M
  2. B
    S, M, G1, G2
  3. C
    G1, S, G2, M
  4. D
    M, G1, G2, S
Question 21Single Answer
What is common to the following plants: Nepenthes, Psilotum, Rauwolfia and Aconitum ?
  1. A
    All are ornamental plants
  2. B
    All are phylogenic link species
  3. C
    All are prone to over exploitation
  4. D
    All are exclusively present in the Eastern Himalayas
Question 22Single Answer
Among the ecosystem mentioned below, where can one find maximum biodiversity ?
  1. A
    Mangroves
  2. B
    Desert
  3. C
    Coral reefs
  4. D
    Alpine meadows
Question 23Single Answer
Endemism refers to :
  1. A
    The distribution of species at a cosmopolitan distribution
  2. B
    Distribution of certain species in a restricted area
  3. C
    A common feature of all organisms seen in the biosphere
  4. D
    A and B are correct
Question 24Single Answer
Which one of the following is an endangered plant species of India ?
  1. A
    Rauwolfia serpentina
  2. B
    Santalum album (Sandal wood)
  3. C
    Cycas beddonei
  4. D
    All of the
Question 25Single Answer
Which of the following is a hot-spot of biodiversity in India ?
  1. A
    Western Ghats
  2. B
    Indo-gangetic plain
  3. C
    Eastern Ghats
  4. D
    Aravalli Hills
Question 26Single Answer
Hot spots are places of :
  1. A
    High degree of species richness
  2. B
    High degree of habitat loss
  3. C
    High degree of endemism
  4. D
    All the above
Question 27Single Answer
The most important cause of extinction of animals and plants, especially in tropical rain forests is :
  1. A
    Habitat loss
  2. B
    Afforestation
  3. C
    Pollution
  4. D
    Soil erosion
Question 28Single Answer
Which among the following is not a method of in-situ conservation ?
  1. A
    National Park
  2. B
    Botanical garden
  3. C
    Wildlife sanctuary
  4. D
    Ramsar sites
Question 29Single Answer
The active chemical drug reserpine is obtained from :
  1. A
    Datura
  2. B
    Rauwolfia
  3. C
    Papaver
  4. D
    Papaver
Question 30Single Answer
The one-horned rhinoceros is specific to which of the following sanctuary :
  1. A
    Bhitar Kanika
  2. B
    Bandipur
  3. C
    Kaziranga
  4. D
    Corbett park
Question 31Single Answer
Which of the following is considered the father of evolution?
  1. A
    Gregor Mendel
  2. B
    Charles Darwin
  3. C
    James Watson
  4. D
    Francis Crick
Question 32Single Answer
What is the primary mechanism of evolutionary change?
  1. A
    Genetic drift
  2. B
    Natural selection
  3. C
    Gene flow
  4. D
    Mutation
Question 33Single Answer
What is the term for the change in allele frequencies in a population over generations?
  1. A
    Speciation
  2. B
    Adaptation
  3. C
    Evolution
  4. D
    Extinction
Question 34Single Answer
What are homologous structures?
  1. A
    Structures with different functions but similar ancestry.
  2. B
    Structures with similar functions but different ancestry.
  3. C
    Structures with no function.
  4. D
    Structures that are identical.
Question 35Single Answer
What is the term for the random change in allele frequencies due to chance?
  1. A
    Natural selection
  2. B
    Gene flow
  3. C
    Genetic drift
  4. D
    Mutation
Question 36Single Answer
What is the process by which new species arise?
  1. A
    Adaptation
  2. B
    Speciation
  3. C
    Extinction
  4. D
    Mutation
Question 37Single Answer
What is the term for the movement of genes between populations?
  1. A
    Genetic drift
  2. B
    Gene flow
  3. C
    Natural selection
  4. D
    Mutation
Question 38Single Answer
What is the ultimate source of genetic variation?
  1. A
    Natural selection
  2. B
    Gene flow
  3. C
    Genetic drift
  4. D
    Mutation
Question 39Single Answer
What is the term for the process by which organisms become better suited to their environment?
  1. A
    Speciation
  2. B
    Adaptation
  3. C
    Extinction
  4. D
    Mutation
Question 40Single Answer
What is the Hardy-Weinberg equilibrium used to describe?
  1. A
    Evolutionary change
  2. B
    Genetic drift
  3. C
    A population in which allele frequencies are not changing.
  4. D
    Speciation
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