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प्रश्न
Fertilisation results immediately in the formation of :
(a) a zygote
(b) an embryo
(c) a placenta
(d) a foetus
उत्तर
(a) a zygote
A zygote is formed by the fertilisation of the egg and a sperm cell.
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संबंधित प्रश्न
Describe the function of placenta.
Give scientific reasons: When an ovum gets fertilized, menstrual cycle stops temporarily in a woman.
Which one of the following best describes the function of the umbilical cord? It :
(a) feeds the embryo with digested substances.
(b) conveys nutrients and wastes to and from the embryo respectively
(c) removes waste matter from the embryo to the mother's blood.
(d) supplies oxygenated blood from the mother to the embryo.
The normal body cell of an organism contains 28 pairs of chromosomes. The number of chromosomes present in its germ cell will be
(a) 28
(b) 14
(c) 56
(d) 42
Describe in brief the role of testis in human male reproductive system.
Describe in brief the role of prostate gland in human male reproductive system.
Gender of child is determined by the male partner of couple. Explain with reasons whether this statement is true or false.
Give the functions of the following:
Vagina
Cryptorchidism is a condition where ______.
Given below are the events in human reproduction. Write them in correct sequential order.
Insemination, gametogenesis, fertilisation, parturition, gestation, implantation
