1.

State whether the following statements are true or false. Correct the false statements.1. Gibberellin helps in prevention and retardation of growth, leaf wilting etc.2. The movement shown by venus fly trap while trapping an insect is a growth relevant movement.3. The lotus flower opens during night time while that of tuberose (polyanthus) opens during day time.4. Sensory neurons conduct impulses from the brain and the spinal cord to effector organs like muscles or glands.5. There are 31 pairs of cranial nerves.6. Activities like heart beat, blood circulation, breathing, sneezing, etc. are controlled by cerebellum.7. Spinal nerves are associated with head, thorax and abdomen.8. Nerve impulses are slow and long lasting whereas action of hormones is fast and short lived.9. Reflex actions are controlled by cerebellum.10. Thyroid stimulating hormone is secreted by the pituitary gland.

Answer»

1. False. Abscisic acid helps in prevention and retardation of growth, leaf wilting etc.

2. False. The movement shown by venus fly trap while trapping an insect is a growth irrelevant movement.

3. False. The lotus flower opens during day time while that of tuberose (polyanthus) opens during night time.

4. False. Sensory neurons conduct impulses from the sensory organs to the brain and the spinal cord.

5. False. There are 12 pairs of cranial nerves.

6. False. Activities like heart beat, blood circulation, breathing, sneezing, etc. are controlled by cerebellum.

7. False. Spinal nerves are associated with arms, legs, skin and some other parts of the body.

8. False. Nerve impulses are fast and short lived whereas action of hormones is slow and long lasting.

9. False. Reflex actions are controlled by spinal cord.

10. True



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