Objective GK test on Biology, Zoology & Botany - Set 09 - ObjectiveBooks

Objective GK test on Biology, Zoology & Botany - Set 09

G.K. Practice Test: Question Set - 09

1. Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?
    (A) Order
    (B) Subspecies
    (C) Class
    (D) Genus

2. Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called
    (A) Flavoxanthin
    (B) Melanin
    (C) Carotene
    (D) Xanthophyll

3. Poison glands of snakes are homologous to
    (A) Electric organs of fishes
    (B) Stings of rays
    (C) Sebaceous glands of mammals
    (D) Salivary glands of vertebrates

4. Photosynthesis is a process
    (A) Reductive and exergonic
    (B) Reductive and catabolic
    (C) Reductive, endergonic and catabolic
    (D) Reductive, endergonic and anabolic

5. Radioactivity is a phenomenon of the spontaneous emission of
    (A) Protons (alpha particles)
    (B) Electrons (beta particles)
    (C) Gamma rays (short wave electromagnetic waves)
    (D) All of the above

6. Outer covering of virus made up of protein is
    (A) Capsid
    (B) Coat
    (C) Virion
    (D) Viriod

7. Plants are killed in winter by frost
    (A) Because of desiccation and mechanical damage to the tissues
    (B) Because no photosynthesis takes place at such low temperature
    (C) Because respiration ceases at such low temperature
    (D) Because there is no transpiration

8. One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?
    (A) Having waited a day, it is too late to take an antibiotic
    (B) You need an antiseptic, not an antibiotic
    (C) You need to be vaccinated instead of taking an antibiotic
    (D) You are infected by a virus

9. Pollen grains in plants are produced in
    (A) Roots
    (B) Leaves
    (C) Flower
    (D) Stem

10. Plants that grow under average temperature and moisture are called
    (A) Halophytes
    (B) Hydrophytes
    (C) Mesophytes
    (D) Xerophytes

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