Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Cell Division - Mitosis

1. During mitosis, ER and nucleolus begin to disappear at
a) Late prophase
b) Early prophase
c) late metaphase
d) early metaphase
2. Mitosis is similar to

Mitosis Stages
a) Meiosis I
b)  Meiosis II
c) Both a and b
d)  None of these
3. Which of the following represents the best stage to view the shape, size and number of chromosomes

Metaphase
a) Interphase
b) Prophase
c) Metaphase
d) Telophase
4. During metaphase mitosis chromosomes
a) undergo coiling
b) line up at the equator
c) undergo coiling
d) break and disintegrate
5. Number of chromatids at metaphase is
a) two each in mitosis and meiosis
b) Two in mitosis and one in meiosis
c) Two in mitosis and four inn meiosis
d) One in mitosis and two in meiosis
6. During cell division in apical meristem, the nuclear membrane appears in
a) Metaphase
b) Telophase
c) Anaphase
d) Cytokinesis
7. Mitotic anaphase differs from metaphase in possessing
a) Same number of chromosomes and same number of chromatids
b) Half number of chromosomes and half number of chromatids
c) Half number of chromosomes and same number of chromatids
d) Same number of chromosome and half number of chromatids
8. How many mitotic divisions are needed for a single cell to make 128 cells?
a) 7
b) 14
c) 28
d) 32
9. Which aspect of mitosis is affected by colchicine in inducing polyploidy?
a) DNA replication
b) Spindle formation
c) Formation of cell plate
d) Chromosome doubling
10. If you are provided with root tips of onion  in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?

Mitosis in Onion Root Tips
a)  Prophase
b) Metaphase
c)  Anaphase
d) Telophase
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Answers
1. b) Early prophase
2. b) Meiosis II
3. c) Metaphase 
4. b) line up at the equator
5. a) two each in mitosis and meiosis
6. b) Telophase
7. d) Same number of chromosome and half number of chromatids
8. a) 7
Explanation: Each cell produces 2 daughter cells, therefore after 7  divisions one cell will give 128 cells.
1 (I) –>2 (II) –> 4 (III) –> 8 (IV) –> 16 (V) –> 32(VI) –> 64 (VII) –> 128
9. b) Spindle formation
10. b) Metaphase
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