Cell Cycle and Cell Division MCQs | NCERT Biology | for NEET

Read the book NCERT Biology class-11 (chapter- 10): Cell Cycle and Cell Division from here.

1. Question

Pairing of homologous chromosomes occurs in which stage of cell division?

In the S-phase of interphase, A and B are duplicated. A and B, respectively, are:

Which of the following event does not occur in mitosis?

Choose the correct sequence of stages of Prophase I :

How many chromatids and chromosomes are present in one bivalent during metaphase I ?

Consider the given two statements :

1. During G₁ phase, the cell is metabolically active and continuously grows but does not replicate its DNA.
   
2. During G₂ phase, proteins are synthesised in preparation for mitosis while cell growth is not seen.
   

Of the two statements ;

Mitotic spindle is mainly composed of which proteins?

If egg of an organism has 10 pg of DNA in its nucleus. How much DNA would a diploid cell of same organism have in G₂ phase of meiosis?

Number of chromatids in chromosome at metaphase is :

Following are the events occurs during meiosis:

1.  Appearance of chiasmata
2.  Synapsis
3.  Assembly of meiotic spindle
4.  Use of recombinase enzyme

Choose the correct sequence :

Best stages to study morphology and shape of chromosome are respectively:

 Recombination is completed in which phase of meiosis:

Select the correct option for the given diagram:

Select the correct match:

What will be the number of the chromosomes in human in S phase if the number of chromosomes in G₂  phase is 46 :

Given below are two statements:
Statement I: The cells of the upper layer of the epidermis, cells of the lining of the guts, and blood cells are being constantly replaced.
Statement II: Meiosis ensures the production of haploid phase in the life cycle of sexually reproducing organisms whereas fertilisation restores the diploid phase.

In the light of the above statements, choose the most appropriate answer from the options given below:

In oocytes of some vertebrates which stage can last for months or years?