Home / iGCSE Biology (0610)-16.1 Asexual reproduction – iGCSE Style Questions Paper 1

iGCSE Biology (0610)-16.1 Asexual reproduction – iGCSE Style Questions Paper 1

IGCSE Biology (0610) Practice Questions Paper 1 - All Chapters

Question

The diagram shows part of a potato plant. The tubers grow into new potato plants that are genetically identical to the parent plant.

Which process is shown?

(A) asexual reproduction
(B) fertilisation
(C) pollination
(D) sexual reproduction
▶️ Answer/Explanation
The description states that new plants grow from tubers and are “genetically identical” to the parent. This is the key characteristic of asexual reproduction, where offspring are produced from a single parent without the fusion of gametes. Processes like fertilisation (B) and pollination (C) are steps in sexual reproduction (D), which involves two parents and results in genetic variation. Since tubers are modified stems that sprout into clones of the parent, the correct process is asexual reproduction.
✅ Answer: (A) asexual reproduction

Question

The diagram shows a potato tuber that developed from the stem of a parent potato plant. Three shoots are starting to grow from the tuber.

How do the genotypes of the shoots compare with the genotypes of the tuber and of the parent?

▶️ Answer/Explanation

A potato tuber is a modified stem that grows asexually from the parent plant. This type of reproduction, known as vegetative propagation, does not involve meiosis or gamete fusion, so no genetic recombination occurs. Therefore, the tuber is genetically identical (a clone) to the parent plant. The shoots growing from the tuber arise from its meristematic tissue through mitosis, making them genetically identical to both the tuber and the original parent.

✅ Answer: (D) – The genotypes of the tuber and the parent are both identical to the shoots.

Question

A number of plants are produced using asexual reproduction.
Which statement about these plants is correct?
  • A   They are produced from one parent and are genetically different.
  • B   They are produced from one parent and are genetically identical.
  • C   They are produced from two parents and are genetically different.
  • D   They are produced from two parents and are genetically identical.
▶️ Answer/Explanation
Correct Answer: B

Explanation:

Asexual reproduction involves a single parent, meaning there is no fusion of gametes or mixing of DNA. The offspring are produced via mitosis, resulting in new plants that are clones of the original. Consequently, these offspring are genetically identical to their parent. Options involving two parents describe sexual reproduction, and asexual processes do not create genetic variation. Therefore, Option B is the only accurate description.

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