Significance of Meiosis

Q.

Where in the body does meiosis occur?

Q. Polymorphism arises due to

1. Mutation
2. Allelic exclusion
3. Evolution
4. Genetic diversity

Q.

Where do meiosis and mitosis occur?

Q.

How many sperms and ova will be formed by a primary spermatocyte and a primary oocyte?

Q. Assertion: During meiotic cell division, the chromosome content of the daughter cells is halved by the end of meiosis I itself. Yet, meiosis II is essential for generation of haploid cells.
Reason: During meiosis II, the duplicated sister chromatids separate from each other and are distributed into the haploid daughter cells.

1. Both the assertion and reason are true and the reason is the correct explanation of the assertion
2. Both the assertion and reason are true but the reason is not the correct explanation for the assertion
3. The assertion is true but the reason is false
4. The assertion is false but the reason is true

Q.

Where does meiosis II occur in females?

Q.

Question 35
Comment on the statement-meiosis enables the conservation of specific chromosome number of each species even through the process per se results in reduction of chromosome number.

Q.

What is released from the ovary: secondary oocyte or ovum?

Q. In an oocyte, second maturation division occurs in–

1. Ovary
2. Abdominal cavity
3. Fallopian tube
4. Uterus

Q. A network of hyphae in fungi is called as $\underset{–}{}$.

1. ascus
2. slime mold
3. plasmodium
4. mycelium

Q.

How many sperms will be produced from 200 primary spermatocytes?

Q.

how does the haploid cells formed during meiosis but why it is not happening in mitosis?

Q.

Are oogonia haploid or diploid?

Q. Clamp connection is found in:

1. Basidiomycetes
2. Ascomycetes
3. Saccharomycetes
4. Hyphomycetes

Q.

How is the sperm genetically different from the egg?

Q.

What would be the number of chromosome in the spermatids?

Q.

What is the diploid number in humans?

Q. Which one of the following individuals can produce 16 different gametes ?

1. AA Bb cc Dd
2. Aa Bb cc DD Ee Ff
3. Aa Bb Cc dd EE FF
4. Aa Bb Cc DD Ee Ff

Q.

The cell division involved in the gamete formation is not of the same type . Justify

Q. In which organ will meiosis occur for the human female?

1. Ovary
2. Testis
3. Kidney
4. Pancreas

Q.

How does the megaspore mother cell divide in most angiosperms?

Q.

Gametes are produced by the process of ________.

Q. Exogenous asexual spores and endogenous sexual spores are seen in

बहिर्जात अलैंगिक बीजाणु तथा अंतर्जात लैंगिक बीजाणु किसमें होते हैं?

1. Ustilago
   
   आस्टीलैगो
2. Neurospora
   
   न्यूरोस्पोरा
3. Trichoderma
   
   ट्राइकोडर्मा
4. Rhizopus
   
   राइजोपस

Q. Assertion: During meiotic cell division, the chromosome content of the daughter cells is halved by the end of meiosis I itself. Yet, meiosis II is essential for generation of haploid cells.
Reason: During meiosis II, the duplicated sister chromatids separate from each other and are distributed into the haploid daughter cells.

1. The assertion is false but the reason is true
2. Both the assertion and reason are true and the reason is the correct explanation of the assertion
3. Both the assertion and reason are true but the reason is not the correct explanation for the assertion
4. The assertion is true but the reason is false

Q.

A male child will born if

1. Father is healthy

2. Mother is well fed during pregnancy.

3. Genetic composition of child has XY set of chromosome.

4. Genetic composition of child has XX set of chromosome.

Q. In animals, ______ occurs during the production of the egg and the sperm.

1. Mitosis
2. Meiosis
3. Fragmentation
4. Regeneration

Q.

Question 42
Write briefly the significance of mitosis and meiosis in multicellular organism.

Q. How many meiotic division are required for the formation of 400 functional megaspores?

1. 400
2. 100
3. 300
4. 200

Q.

Why is meiosis called reductional division and mitosis is called equational division? Explain.

Q. Which of the following parental combination has produced mutant offspring?

1. $Tt\times tt=Tt$
2. $Tt\times Tt=tt$
3. $tt\times tt=Tt$
4. $TT\times tt=Tt$