Consider the differences between hormone and nervous system mentioned below and choose which ones are correct:
| Hormone | Nervous System |
|---|---|
| I. Hormone is physical coordinator | Nervous system is chemical coordinator |
| II. The function of hormone occurs at a slow pace | The function of nervous system is quick and instant |
| III. The effect of hormone is long lasting | The effect of nervous system is short lasting |
| IV. Hormone remains unchanged after its function is over | Nervous system gets destroyed after its function is over |
Options:
(a) I, IV
(b) I, III
(c) II, III
(d) II, IV
WBBSE
Class X
Life Science
01 (c) Animal Hormone
01 (d) Nervous System
01 Mark
2024
(c) II, III
Explanation:
- Hormones act as chemical coordinators in the body, regulating various physiological activities through endocrine glands. Their effects are slow but long-lasting because hormones get transported via blood and act on distant target organs.
- The nervous system functions as a physical coordinator by transmitting nerve impulses rapidly and producing instant but short-lived effects. Nervous impulses are electrical signals conducted through neurons.
- Hormones do not remain physically unchanged after their action; they get destroyed or metabolized. The nervous system components like neurons remain structurally intact after transmitting impulses.
- Thus, statements II and III correctly contrast hormone and nervous system functions.
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