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Objective Questions

Latest WII Research Biologist Exam Question (Objective Questions), MCQ in English

Subjects : Biologist

Question Bank Wll Research Biologist Exam - English
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Biologist

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 is properly matched ?
  1. A
    Platyhelminthes –Trematoda – Planoria
  2. B
    Echinodermate – Asteroidea – Star fish
  3. C
    arthropoda – Insecta – Spider
  4. D
    Mollusca – Cephalopoda – Unio
Question 12Single Answer
A man is admitted to a hospital. He is suffering from an abnormally low body temperature, loss of appetite and extreme thirst. His brain scan would probably show a tumour in
  1. A
    medulla oblongata
  2. B
    pons
  3. C
    cerebellum 
  4. D
    hypothalamus
Question 13Single Answer
The agents, which are known to cause CJD are
  1. A
    protein particles
  2. B
    a class of bacteria
  3. C
    a class of viruses
  4. D
    fungi
Question 14Single Answer
In crop improvement programmers, virus-free clones can be obtained through
  1. A
    grafting
  2. B
    hybridization
  3. C
    embryo culture 
  4. D
    shoot apex culture
Question 15Single Answer
A person is suffering from frequent episodes of nasal discharge, nasal congestion, reddening of eyes and watery eyes. These are the symptoms of
  1. A
    cyanosis
  2. B
    bronchitis
  3. C
    rhinitis
  4. D
    bronchial carcinoma
Question 16Single Answer
Some important events in the human female reproductive cycle are given below. Arrange the events in a proper sequence.
A: Secretion of FSH
B: Growth of corpus luteum
C: Growth of the follicle and oogenesis
D: Ovulation
E: Sudden increase in the levels of LH
 
  1. A
    C → A → D → B → E
  2. B
    A → C → E → D → B
  3. C
    A → D → C → E → B
  4. D
    B → A → C → D → E
Question 17Single Answer
Which of the following options shows bisexual animals only ?
  1. A
    Amoeba, sponge, leech
  2. B
    Sponge, cockroach, Amoeba
  3. C
    Earthworm, sponge, leech
  4. D
    Tapeworm, earthworm, honeybee
Question 18Single Answer
Vaccination against small pox was developed by:
  1. A
    Louis Pasteur
  2. B
    Edward jenner
  3. C
    Robert Koch
  4. D
    Alexander Flemming
Question 19Single Answer
The value of human diastolic blood pressure is :
  1. A
    120 – 80 = 40 mm. Hg
  2. B
    120 mm. Hg
  3. C
    80 mm. Hg
  4. D
    128/80 mm. Hg
Question 20Single Answer
Balance theory of sex determination holds good for:
  1. A
    Allium cepa
  2. B
    Drosophila
  3. C
    Humans
  4. D
    grasshoppers
Question 21Single Answer
the plants respond to photo – periods due to the presence of :
  1. A
    Phytochromes
  2. B
    Stomata
  3. C
    Enzymes
  4. D
    Phytohormones
Question 22Single Answer
Identify the edible fresh-water telesots:
  1. A
    Sharks
  2. B
    Rays and skates
  3. C
    Hilsa ilisha
  4. D
    Catla catla
Question 23Single Answer
Plasmids occur in:
  1. A
    Viruses
  2. B
    Chromosomes
  3. C
    Bacteria
  4. D
    Chloroplasts
Question 24Single Answer
Match the names of antibiotics listed under column 1 with their source given under column 2; choose the correct combination of alphabets of the two columns:
  Column 1   Column 2
A
B
C
D		 Neomycin
Terramycin
Viridian
penicillin		 p
q
r
s		 Streptomyces fradiae
Penicillium notatum
Streptomyces rimosus
Gliocladium virens
  1. A
    A = r, B = p, C = s, D = q
  2. B
    A = r, B = s, C = p, D = q
  3. C
    A = p, B = r, C = s, D = q
  4. D
    A = s, B = p, C = r, D = q
Question 25Single Answer
The bond formed between the first phosphate group and adenosine in ATP is:
  1. A
    Nitro – phosphate bond
  2. B
    Adeno – phosphate bond
  3. C
    Phosphoester bond
  4. D
    Phosphoanhydride bond
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