Nuclear Division (Cambridge O Level Biology)

Exam Questions

16 mins9 questions
1
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6 marks

The following is a passage relating to mitosis with some missing words. 

Mitosis is a process of cell __________ in which two __________ daughter cells are produced. Because these cells all have two copies of each __________, they are known as __________ cells. 

Mitosis allows for __________ of damaged tissues as well as to provide more cells during periods of __________.

Complete the above sentences, using the words from the box below. You can use each word once, more than once or not at all.

gene repair identical growth
chromosome division nucleus diploid

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1
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2 marks

Fig. 1 shows some cells from the shoot tip of an onion, Allium cepa.

cie-igcse-2019-paper4-6a

Fig. 1

(i)

State the evidence visible in Fig. 1 that identifies the cells of A. cepa as plant cells.

[1]

(ii)

Cell A is dividing by mitosis.

State the role of mitosis in a shoot tip.

[1]

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2
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2 marks

Organisms pass on their genetic information in their gametes.

(i)

State the name of the type of cell division that produces gametes.

[1]

(ii)

State the name of the cell formed when the nuclei of two gametes join together.

[1]

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