Q1. Complete the following sentences :-
(a) In females, the uterine wall thickens to receive the ___ egg.
(b) Endocrine glands release hormones directly into ____ for transportation to the ____
(c) The sex hormones, ______ and oestrogen are responsible for the development of _____ sexual characters.
(d) Release of sex hormones is under the control of a hormone secreted from the _______ gland.
Q2. Give a suitable word for each of the following statements.
(a) The site which responds to a hormone.
(b) Name of a gland which transports secretions through ducts.
(c) Chemicals which control changes at adolescence stage.
(d) It marks the beginning of reproductive period.
Q3. Name the hormone that is released by testes at the onset of puberty.
Q4. Name the female hormone produced by ovaries that helps in development of mammary glands.
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αnswers :-
Q1. Complete the following sentences :-
- In females, the uterine wall thickens to receive the fertilised egg.
- Endocrine glands release hormones directly into blood stream for transportation to the target site.
- The sex hormones, Testosterone, estrogen and oestrogen are responsible for the development of secondary sexual characters.
- Release of sex hormones is under the control of a hormone secreted from the pituitary gland.
_____________
Q2. Give a suitable word for each of the following statements.
- The site which responds to a hormone.
Answer - Target site
2. Name of a gland which transports secretions through ducts.
Answer - Sweat glands / salivary gland / oil glands (any one)
3. Chemicals which control changes at adolescence stage.
Answer - Hormones
4. It marks the beginning of reproductive period.
Answer - Puberty
_____________
Q3. Answer in one word.
- Name the hormone that is released by testes at the onset of puberty.
Answer - Testosterone
- Name the female hormone produced by ovaries that helps in development of mammary glands.
Answer - Estrogen
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