2020HSCShort answer

Q25 (c)

2 marks

Question

Explain ONE advantage for animals of using external fertilisation.

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Solution

Criteria	Marks
• Explains an advantage of external fertilisation	2
• Provides a relevant advantage of external fertilisation	1

Sample answer:

Animals using external fertilisation will expend less energy on gestation, as this will occur outside the body.

Supplied marking guidance · human reviewed

Compare this with your working, not only your final sentence.

Syllabus alignment

Module 5 · Heredity

ReproductionCompare sexual and asexual reproduction across animals, plants, fungi, bacteria and protists.

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