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प्रश्न
What are chemical messengers?
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उत्तर
Endocrine glands control and coordinate the body functions through secreting certain chemical messengers called hormones.
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संबंधित प्रश्न
Fill in the blank:
The hormone insulin is secreted by ____________.
State whether the following statement is true (T) or false (F):
For hormones to be effective in their actions, they are required in sufficiently large quantities.
Name the following:
Five endocrine glands found in human body.
Define the following:
Hormones
What happens when the thyroid gland secretes less hormone?
Match Column I with Columns II and III.
| Column I | Column II | Column III |
| Auxin | Gibberella fujikuroi | Abscission |
| Ethylene | Coconut milk | Intermodal elongation |
| Abscisic acid | Coleoptile tip | Apical dominance |
| Cytokinin | Chloroplast | Ripening |
| Gibberellins | Fruits | Cell division |
Match the following hormones with their deficiency states.
| Hormones | - | Disorders |
| a) Thyroxine | - | Acromegaly |
| b) Insulin | - | Tetany |
| c) Parathormone | - | Simple goitre |
| d) Growth hormone | - | Diabetes insipidus |
| e) ADH | - | Diabetes mellitus |
The function of stress-related hormone viz. abscisic acid is to ______
Match the terms of Column (A) with those of Column (B)
| Column (A) | Column (B) |
| (a) Olfactory receptors | (i) Tongue |
| (b) Thermo receptors (temperature receptors) | (ii) Eye |
| (c) Gustatoreceptors | (iii) Nose |
| (d) Photoreceptors | (iv) Skin |
Priya tried to match the hormones with their effect on the human body. She tabulated the pairs as follows:
| Hormone | Effect on the body |
| P | Stimulates conversion of Glycogen to Glucose |
| Q | Reabsorption of water by the Nephrons. |
Identify the correct pair of hormones.
