Question

25.A) How is reproduction in mammals different from reproduction in amphibians? Give
any two points of difference
i) What is a hermaphrodite animal?Give one example.
ii) How many days does it take for a hen's egg to hatch?
BWhy does a child has some characteristics of father and some characteristics of mother? 5​

Answer 1

Answer:

Sexual reproduction

Explanation:

• while all of these animals reproduce sexually( meaning that the species consist of male and female and mating involves the fertilization of egg by sperms) reptiles and mammals reproduce through internal fertilization whereas amphibians practice external fertilization

Answer 2

Answer:

A) In mammals Internal fertilization and internal development takes place whereas in amphibians there is external fertilization and external development.

Amphibians undergo Metamorphosis whereas mammals do not.

Example- Mammals • Human beings

Amphibians • Frog

I) Hermaphrodite animals are those who have both male and female reproductive organs i.e they produce both male and female gamate by their own.

Example- Earthworm

ii) 21 Days (incubation period)

B) It's because the Zygote contains nuclear part of sperm (from father) and of the egg (from mother)

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