Advertisements
Advertisements
प्रश्न
Observe the given figure and answer the questions that follow.
- Label A and B.
- Identify the process.
- What happens during the process and what is formed?
उत्तर
- A-sperm, B-ovum (egg).
- The process is fertilisation.
- During the process, the sperm nucleus fuses with the egg nucleus as a result of which a zygote is formed.
APPEARS IN
संबंधित प्रश्न
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.
Name the hormones involved in regulation of spermatogenesis.
Explain the structure of secondary oocyte.
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.
Acrosome reaction in sperm is triggered by ______.
Gray crescent is the area ______.
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called ______.
Acrosome is a type of ______.
Fetal sex can be determined by examining cells from amniotic fluid looking for:
Answer the following:
How many primary spermatocytes and oocytes are required for the formation of 100 spermatozoa and ova?
