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प्रश्न
Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria
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उत्तर
In case of fertilisation of the ovum by a sperm, the corpus luteum persists and continues to secrete progesterone in the body thus maintaining its high levels. The presence of progesterone prevents the maturation of another ovum, thus temporally stopping the menstrual cycle.
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संबंधित प्रश्न
Name the human male reproductive organ that produces sperms and also secretes a hormone. Write the functions of the secreted hormone.
Name the parts of the human female reproductive system where
i. fertilisation takes place
ii. implantation of the fertilised egg occurs
Write the functions of the following parts in human female reproductive system:-
(i) Ovary
(ii) Oviduct
(iii) Uterus
When a cell reproduces, what happens to its DNA?
Write the function of the following part in a human female reproductive system:
Fallopian tube
fill in the blanks with suitable functions: Seminiferous Tubule and _____
Name the following:
Male and Female organs on specific individuals.
Define the following:
Parthenogenesis
Draw a labeled diagram of the human female reproductive system.
Choose the Odd One Out:
