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प्रश्न
Male and female gametes are ______.
विकल्प
diploid
haploid
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उत्तर
Male and female gametes are haploid.
Explanation:
This means they have half as many chromosomes as diploid cells. During fertilisation, haploid gametes from both parents combine to form a diploid zygote with a full complement of chromosomes.
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संबंधित प्रश्न
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
Briefly describe the process of spermatogenesis.
Define spermiogenesis.
What is oogenesis?
Name the functions - Acrosome of sperm.
In meiosis, the number of chromosomes becomes ___________.
What is gamete formation?
Give scientific reason.
Older women are more likely to give birth to children with some abnormalities.
Answer the following type of question Assertion (A) and Reason (R).
(A) - In human males, testes are extra-abdominal and lie in scrotal sacs.
(R) - Scrotum acts as a thermoregulator and keeps the temperature lower by 2°C for normal sperm production.
The following is the illustration of the sequence of ovarian events (a-i) in a human female.
Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
Which of the following are known as the nourishing cells present in the seminiferous tubules?
First meiotic division is observed in ____________.
How many sperms are formed from a secondary spermatocyte?
By which process sperms released from the seminiferous tubules?
Which of the following contains a fluid filled cavity called antrum?
Corona radia is made up of ______.
Spermiation is the process of the release of sperm from ______.
Which one is released from the ovary?
In the process of fertilization, this is true:
Follicular atresia is:
Which of the following cells during gametogenesis is normally diploid?
Capacitation refers to changes in the ______.
How many spermatozoa are formed from one secondary spermatocyte?
Sketch and label the process of oogenesis.
The diagram given below shows the various steps in spermatogenesis.
- Name the parts labelled '1', '2' and '3'.
- Name the process by which part '3' changes to part '4'.
Draw a labelled diagram of a section through the ovary.
In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
The process of gametogenesis is initiated by ______ and ______ hormones respectively.
Match List - I with List - IІ.
| List - I | List - II |
| A. Head | I. Enzymes |
| B. Middle piece | II. Sperm motility |
| C. Acrosome | ΙII. Energy |
| D. Tail | IV. Genetic material |
Choose the correct answer from the options given below:
During oogenesis the meiotic division is arrested at ______ before fertilization.
