Biology, Zoology & Botany GK Practice Test - ObjectiveBooks

Biology, Zoology & Botany GK Practice Test

Gk Practice Test: Question Set - 14

1. Most fish do not sink in water because of the presence of
    I. Swim bladder
    II. Air bladder
    III. Air sacs
    IV. Air in spongy bones
    (A) I and II are correct
    (B) II and III are correct
    (C) III and IV are correct
    (D) I, II, III and IV are correct

2. Plants hormone that induces cell division is
    (A) Auxins
    (B) Gibberellins
    (C) Kinins
    (D) Domins

3. Plants developing in dry conditions are
    (A) Xerophytes
    (B) Mesophytes
    (C) Lithophytes
    (D) Hydrophytes

4. Norepinephrine increases
    (A) Respiration
    (B) Urine production
    (C) Saliva production
    (D) Blood pressure

5. Plants receive their nutrients mainly from
    (A) Chlorophyll
    (B) Atmosphere
    (C) Light
    (D) Soil

6. Process of cell division can take place by
    (A) Heterosis
    (B) Fusion
    (C) Mitosis
    (D) None of these

7. Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by
    (A) Robert Hooke
    (B) Robert Brown
    (C) Rudolf Virchow
    (D) Theodore Schwann

8. Plants that grow in saline water are called
    (A) Halophytes
    (B) Hydrophytes
    (C) Mesophytes
    (D) Thallophytes

9. Potato is a modified form (outgrowth) of
    (A) Root
    (B) Stem
    (C) Fruit
    (D) Leaf

10. Prothrombin which helps in clotting of blood is released by
    (A) Lymphocytes
    (B) Erythrocytes
    (C) Monocytes
    (D) Blood platelets

11. Plants wilt due to excess of
    (A) Transpiration
    (B) Photosynthesis
    (C) Absorption
    (D) None of these

12. Monotremes are unique mammals because they
    (A) Posses hair
    (B) Give birth to live young
    (C) Secret milk in a pouch
    (D) Lay eggs

13. Movements due to light are shown by
    (A) Flowering plants
    (B) Lower plants
    (C) All land plants
    (D) All the plants

14. Most abundant tissues of our body are
    (A) Muscular
    (B) Connective
    (C) Epithelial
    (D) Nervous

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