Significance of Meiosis

Q. Identify the phase of mitosis and structure labelled as X in the image given below.

1. Anaphase, centriole
2. Metaphase, centriole
3. Metaphase, spindle fibre
4. Prophase, centriole

Q. Which of the following occur during meiosis?

1. Crossing over of non-sister chromatids of homologous chromosomes
2. Generation of haploid cells
3. Generation of variation
4. All of the above

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

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

Q. Which of the following statements is NOT correct when cells undergo meiosis?

1. Meiosis ensures that the chromosome number remains constant generation after generation.
2. 
   Meiosis ensures that each generation has a different genetic makeup than the previous one.
3. 
   Meiosis ensures that each newly formed daughter cell receives the same number and kinds of chromosomes
4. 
   
   Meiosis results in four daughter cells

Q. The minimum number of meiotic divisions required to produce 64 pollen grains is

1. 15
2. 31
3. 62
4. 16

Q. Diploid cells gives rise to haploid cells by the end of meiosis I.

1. False
2. True

Q. Which type of division leads to polyploidy?

1. Cryptomitosis
2. Meiosis
3. Endomitosis
4. Amitosis