General Science MCQ – 158 (Biology)

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1. Which plant hormone promotes dormancy in seeds and buds?
(A) Auxin
(B) Gibberellin
(C) Cytokinin
(D) Abscisic acid

2. Roots of plants are?
(A) Positively geotropic
(B) Negatively geotropic
(C) Positively phototropic
(D) None of the above

3. Response of plants roots towards water is called?
(A) Chemotropism
(B) Phototropism
(C) Hydrotropism
(D) Geotropism

4. Movement of sunflower in accordance with the path of the sun is due to?
(A) Chemotropism
(B) Phototropism
(C) Hydrotropism
(D) Geotropism

5. Which plant hormone promotes cell division?
(A) Auxin
(B) Gibberellin
(C) Cytokinin
(D) Abscisic acid

6. The main function of abscisic acid in plants is?
(A) To promote cell division
(B) To inhibit the growth
(C) To promote the growth of stem
(D) To increase the length of cells

7. Fall of mature leaves and fruits from plants is triggered by which of the following substance?
(A) Auxin
(B) Gibberellin
(C) Cytokinin
(D) Abscisic acid

8. Any change in the environment to which an organism responds is called?
(A) Stimulus
(B) Coordination
(C) Response
(D) Hormone

9. A part of the body that responds to the instructions sent from the nervous system is called?
(A) Receptor
(B) Effector
(C) Nerves
(D) Muscles

10. The longest fiber on the cell body of a neuron is called?
(A) Sheath
(B) Cytoplasm
(C) Axon
(D) Dendrites

General Science MCQ – 157 (Physics)