Why is the use of iodised salt advisable?

Iodised salt contains iodine which stimulates the thyroid gland to produce thyroxine hormone. This hormone regulates the metabolism of fats, carbohydrates and protein in the body. Deficiency of iodine in our diet can lead to a condition called goitre, which is characterised by enlargement of the thyroid gland and swelling of the neck.

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Science for Tenth Class Part - 3 Biology>Chapter 2 - Control and Coordination>Multiple Choice Questions (MCQs)>Q 59

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A cell (or group of cells) in a sense organ which is sensitive to a particular type of stimulus is called

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Important Questions on Control and Coordination

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Science for Tenth Class Part - 3 Biology>Chapter 2 - Control and Coordination>Multiple Choice Questions (MCQs)>Q 60

Which of the following cannot be considered a receptor?

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Science for Tenth Class Part - 3 Biology>Chapter 2 - Control and Coordination>Multiple Choice Questions (MCQs)>Q 61

One of the following acts as an endocrine gland as well as an exocrine gland. This one is:

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Science for Tenth Class Part - 3 Biology>Chapter 2 - Control and Coordination>Multiple Choice Questions (MCQs)>Q 62

Which of the following helps in maintaining posture and balance of the human body?

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Science for Tenth Class Part - 3 Biology>Chapter 2 - Control and Coordination>Multiple Choice Questions (MCQs)>Q 63

The number of pairs of nerves which arises from the spinal cord is

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Science for Tenth Class Part - 3 Biology>Chapter 2 - Control and Coordination>Multiple Choice Questions (MCQs)>Q 64

Cerebellum, medulla and pons are the parts of

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Science for Tenth Class Part - 3 Biology>Chapter 2 - Control and Coordination>Multiple Choice Questions (MCQs)>Q 65

Which of the following are cerebral reflexes?
(i) A person pulls his/her hand on touching a hot object.
(ii) A person spits out immediately when a fly enters his mouth while talking.
(iii) A person walking barefoot lifts his foot at once on stepping on to a nail.
(iv) A person’s pupil contracts at once in the presence of bright light.

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Science for Tenth Class Part - 3 Biology>Chapter 2 - Control and Coordination>Multiple Choice Questions (MCQs)>Q 67

Which of the following is a mismatched pair?

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Science for Tenth Class Part - 3 Biology>Chapter 2 - Control and Coordination>Multiple Choice Questions (MCQs)>Q 68

One of the following is an incorrect statement about insulin. This is