The definition of hormone describes them as having all the following features except:
1. non-nutrient chemicals
2. intra-cellular messengers
3. produced in trace amounts
4. act on distant target organ
Assertion (A): | Apart from the organised endocrine glands, hormones are secreted by other parts of the human body as well. |
Reason (R): | Hormone is any non-nutrient chemical which acts as intercellular messenger and is produced in trace amounts. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
I: | Hormones are transported by the bloodstream. |
II: | Hormones act on specific target tissues that have receptors for them. |
III: | The endocrine system works in a coordinated manner with the nervous system. |
IV: | All endocrine glands are ductless. |
I: | are located only in the cranial and thoracic regions of the human body. |
II: | are ductless glands. |
III: | secrete hormones. |
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
1. | is more in males than in females. |
2. | is more in females than in males. |
3. | is equal in males than in females. |
4. | is variable amongst adult males and adult females. |