Advertisements
Advertisements
Question
At the time of birth, there are _______________ oocytes in the ovary of a female foetus.
Options
1 to 2 million
2 to 3 million
2 to 4 million
none of these
Solution
At the time of birth, there are 2 to 4 million oocytes in the ovary of a female foetus.
APPEARS IN
RELATED QUESTIONS
Explain the development of a secondary oocyte (ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.
Name the functions - Acrosome of sperm.
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
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.
Describe the structure of the human ovum with a neat labelled diagram.
Select the correct sequence of oogenesis.
Identify the correct stages (P - S) in the given diagram of spermatogenesis.
Which of the following contains a fluid filled cavity called antrum?
Identify the wrong statement from the following.
Preparation of sperm before penetration of ovum is ______.
The head of the epididymis at the head of the testis is called ______.
Which of the following is a primary sex organ of female?
The prostate gland and seminal vehicle perform the function of ______.
Mark the odd one.
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?
3-celled male gamete develops in:
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n = 50 shall be:
Which of the following cells during gametogenesis is normally diploid?
The mother germ cells are transformed into a mature follicle through series of steps. Provide the missing steps in the blank boxes.
Which type of cell division forms spermatids from the secondary spermatocytes?
