Question

9.
How many pairs of Chromosomes are found in nuclei of their cells?
(a) 22 pairs
(b) 23 pairs
(c) 24 pairs
(d) 25 pairs
10. Children gain height during
(a) adolescence
(b) endocrine
(c) balanced food
(d) menarche
11. Adam's apple is
(a) enlarged larynx
(b) mammary glands
(c) apple of Adam
(d) red apple
12. The voice box is also called as
(a) stomach
(b) heart
(d) mouth
(c) larynx
13. The hearing range of human ear is
(a) 20 Hz to 20,000 Hz
(b) less than 20 Hz
(d) 20 Hz to 25,000 Hz
(c) more than 20,000 Hz
14. Wind, sun and hydropower are​

Answer 1

Answer:

1. the answer is 23 pairs of chromosomes or 46 chromosomes
2. adolescene
3. enlarged larynx
4. larynx
5. 20 hz to 20000hz
6. natural source of power

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Answer 2

Answer:

9.23 pairs

10. Adolescence

11. Enlarged Larnyx

12. larnyx

13. 20Hz to 20,000 Hz

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