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प्रश्न
Male and female gametes are ______.
पर्याय
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
With the help of diagrammatic representation, explain the process of gametogenesis
The following is the illustration of the sequence of ovarian events (a − i) in a human female
(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.
(iii) Explain the changes that occur in the uterus simultaneously in anticipation.
(iv) Write the difference between ‘c’ and ‘h’.
(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.
Define spermiation.
Body breaks up into several fragments and each fragment starts to live as a new individual. This is ______ type of reproduction.
Describe the process of oogenesis in human female.
Give scientific reason.
Older women are more likely to give birth to children with some abnormalities.
Give scientific reason.
There is a menopause when women are 45-50 years old.
Draw a labeled sketch of a spermatozoan.
Define gametogenesis.
Complete the analogy.
1 primary spermatocyte : 4 spermatozoa :: 1 primary oocyte : ____________.
Which of the following occurs during maturation phase of spermatogenesis?
Identify the proper order of spermatogenesis and choose the correct option.
Four primary spermatocytes give rise to ______.
Draw a labelled diagram of a Graafian Follicle.
By which process sperms released from the seminiferous tubules?
Cavity of graafian follicle is ______.
During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called ______.
How many sperms are formed from 4 primary spermatocytes?
In spermatogenesis, reduction division of chromosome occurs during conversion of ______.
During oogenesis, each diploid cell produces ______.
Which of the following are called dual gland?
The prostate gland and seminal vehicle perform the function of ______.
During reproduction, the chromosome number (2n) reduces to half (n) in the gametes and again the original number (2n) is restored in the offspring. What are the processes through which these events take place?
In spermatogenesis, at the end of the first meiotic division ______ are formed.
Sketch and label the process of oogenesis.
Answer the following:
How many primary spermatocytes and oocytes are required for the formation of 100 spermatozoa and ova?
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'.
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:
