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Question
Explain the term Parturition or birth.
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Solution
Parturition or birth: It is the expelling of the fetus from the body of the mother and it begins by the contraction of the uterine walls resulting in labour pains.
RELATED QUESTIONS
Name the human male reproductive organ that produces sperms and also secretes a hormone. Write the functions of the secreted hormone.
Describe in brief what happens to the zygote after it gets implanted.
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.
Match the Column:
| no | Column A | Column B |
| 1 | Allele | Control of automobile exhaust |
| 2 | Leydig cells | Tourniquet |
| 3 | Utriculus | Alternate forms of genes |
| 4 | Snake bite | Dynamic equilibrium |
| 5 | Euro IV norms | Testosterone |
| Sudden change in genes | ||
| Static equilibrium |
What is gestation period?
Choose the correct answer:
The aim of sexual reproduction _________
Give Reasons
At the time of birth, the testes descend into the scrotal sacs.
Name the Following
What does this abbreviation stand for LH?
Correct sequence in development is ______.
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:
