Question

III. Fill in the blanks:
and
2. In humans, fertilization is
3.
animals are those which lay eggs.
and
4. In humans, male reproductive organs are
5. In humans, sperms are produced by
and eggs are produced by
6. Different stages in the life cycle of a butterfly are eggs,
(Give the stages in sequence.)
7. X and Y chromosomes are called
8. Chemical substances secreted by endocrine glands are called
9.
gland is called the master gland.
10. Maturation of reproductive organs takes place during
11. Voice box is
in boys than that in girls.
12. Secondary sexual characters start developing during
Please answer all this ​

Answer 1

Answer:

2. Internal

3. oviparous animals

4. testicles ( testes)

5. testicles and ovaries

6. egg , larvae, pupa, butterfly

7. sex chromosomes

8.hormons

9. pituitary gland

10.adolescence or puberty

11. thicker

12. adolescence or puberty

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Answer 2

Answer:

2- internal

3- oviparous

4- testes- primary reproductive organi

5-spermatogonia and oogonia respectively

6- egg, larva, pupa, mature butterfly

7- sex chromosomes

8- hormones

9- pituitary gland

10- puberty

11- males have low pitch voice than females due to thicker larynx. Larynx is called sound box or voice box

12- puberty