What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?

(a) 21                             (b) 42                             (c) 63                             (d) 84

Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres:

(1) Metaphase I    

(2) Metaphase II  

(3) Anaphase I     

(4) Anaphase II

At which stage of meiosis does the genetic constitution of gametes is finally decided:

Select the correct statement about G₁ phase:

(1) Cell is metabolically inactive

(2) DNA in the cell does not replicate

(3) It is not a phase of synthesis of macromolecules

(4) Cell stops growing

Which of the following number of cells can be expected from the human cell culture after 70hrs

1. 4

2. 8

3. Both 1 and 2

4. 2

Which of the following is a continuous process?
1. Cell growth (in terms of cytoplasmic increase)
2. Cell differentiation
3. DNA duplication
4. Cell division

Cell growth is a continuous process in terms of

The process of distribution of duplicated DNA in the daughter cells is

1.      Easy process

2.      A complex series of events

3.      A single complex process

4.     Easiest process in all the events bof cell cycle.

How many cells can be expected in a yeast culture after  540 minutes?
1. 64
2. 512
3. 256
4. 32

If a person forgets to take the reading of his cell culture data now he needs to conclude among the two plates A( with 16 cells) and B (with 128 cells). Which plate has growth of more than 9hrs and which plate has growth of less than 9 hrs if they were yeast cells?