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प्रश्न
Draw a labelled diagram of sperm.
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उत्तर १
उत्तर २
APPEARS IN
संबंधित प्रश्न
Give the name and function for ‘A’ and ‘B’ from the diagram given below
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.
The process of release of the ovum from a mature follicle is called ______.
Define spermiogenesis.
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.
If newborns are produced at the age of menopause, they may be with some abnormalities. Why?
The male sex hormone testosterone is secreted from ____________.
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.
Answer the following type of question Assertion (A) and Reason (R).
(A) - Head of the sperm consists of acrosome and mitochondria.
(R) - Acrosome contains spiral rows of mitochondria.
During spermatogenesis, spermatogonium grows in size to become ______.
The secondary oocyte enter into the fallopian tube through the ______.
The immature male germ cells differentiates into ______ at the end of meiosis I.
Which of the following is diploid?
After ovulation, Graafian follicle regresses into ______.
It The cell division in secondary oocyte is suspended at ______.
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called ______.
The principal tail piece of human sperm shows the microtubular arrangement of ______.
In oogenesis haploid egg is fertilised by sperm at which stage?
Head of epididymis is called as ______.
Observe the given figure and answer the questions that follow.
- Label A and B.
- Identify the process.
- What happens during this process and what is formed?
Fetal sex can be determined by examining cells from amniotic fluid looking for:
3-celled male gamete develops in:
Growth hormone of pituitary is more effective in ______.
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?
What is the difference between a primary oocyte and a secondary oocyte?
Given below are two statements.
- Statement I: The spermatids are non-motile and non-functional which get transformed into functional spermatozoa by the process of spermiogenesis.
- Statement II: During the process of this change, the spermatids remain held to each other and to Leydig's cells by cytoplasmic bridges.
In light of the above statements, select the correct answer from the option given below.
Distinguish between human sperm and ovum.
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:
Which gamete is produced through oogenesis?
