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प्रश्न
Give appropriate term of the following:
The onset of reproductive phase in a young female.
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उत्तर
Menarche
संबंधित प्रश्न
State the changes that take place in the uterus when Female gamete/egg is not fertilised
The diagram shown below is the longitudinal section of a testis of man. Study it carefully and answer the questions that follow
(i) Label the parts numbered 1 to 3 in the diagram.
(ii) In which part of the testis are the sperms produced?
(iii) State the functions of the parts labelled 1 and 3 in the diagram.
Give appropriate biological/technical terms for the following:
The kind of twins formed from two fertilized eggs.
The structure formed by the villi of the embryo and the uterus of the mother.
Name the organs which produce ova (or egg cells) in human females.
What is meant by implantation?
Explain why, a human zygote is more likely to grow into an adult than a frog zygote.
Pollen grains are formed by ______ division in locules of anthers.
Distinguish between Vasa efferentia and Vasa deferentia.
Consider the following:
- The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis.
- The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females.
- The first polar body is associated with the formation of the primary oocyte.
- Luteinising Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding.
Choose the correct answer from the options given below:
