Survival of the young is generally higher with:
AExternal fertilis
BSpore formation
CBudding of buds
DInternal fertilis
Answer & Solution
Correct answer: D. Internal fertilis
1. Fertilisation may happen inside or outside the body.
2. One of the two shelters the developing embryo.
3. The embryo is better protected in internal fertilisation.
4. So the answer is internal fertilisation.
_Source: NCERT Class 9 Science, Ch 11 'Reproduction: How Life Continues'_
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