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Biology - Exemplar

22. Chemical Coordination and integration

1. The Living World
2. Biological Classification
3. Plant Kingdom
4. Animal Kingdom
5. Morphology of Flowering Plants
6. Anatomy of Flowering Plants
7. Structural Organisation in Animals
8. Cell : The Unit of Life
9. Biomolecules
10. Cell Cycle and Cell Division
11. Transport in Plants
12. Mineral Nutrition
13. Photosynthesis in Higher Plants
14. Respiration in Plants
15. Plant Growth and Development
16. Digestion and Absorption
17. Breathing and Exchange of Gases
18. Body Fluids and Circulation
19. Excretory Products and Their Elimination
20. Locomotion and Movement
21. Neural Control and Coordination
22. Chemical Coordination and integration
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Q. 11

Rearrange the following hormones in Column I so as to match with their chemical nature in Column II.

Class 11th Biology - Exemplar 22. Chemical Coordination and integration

Answer :

a-iv, b-i, c-ii, d-iii.

Explanation:

a. Oxytocin- (iv). Peptide

Oxytocin is a peptide hormone. Oxytocin is secreted by posterior pituitary gland and this hormone is responsible for secretion of milk from mammary gland.

b. Epinephrine- (i). Aminoacid derivative

Epinephrine is a amine hormone which is secreted by adrenal gland. This hormone is also known as emergency hormone which act during stress and emergency which increases the blood glucose level in body by increasing blood flow.

c. Progesterone- (ii). Steroid

Progesterone is a steroid hormone which is secreted by ovary. It is mainly female hormone which is responsible for pregnancy and is also known as pregnancy hormone.

d. Growth hormone- (iii). Protein

Growth hormone is a protein hormone which is secreted by hypothalamus which helps in regulating the body growth.

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PREVIOUSCorrect the following statements by replacing the term underlined.a. Insulin is a steroid hormone.b. TSH is secreted from the corpus luteumc. Tetraiodothyronine is an emergency hormone.d. The pineal gland is located on the anterior part of the kidney.NEXTWhat is the role-played by luteinizing hormones in males and females respectively?

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