L4

Question 1

What is fertilisation?

Answer 1

This is when a sperm cell and an ovum (egg cell) make contact and fuse together into a zygote, which is then formed into a foetus, an embryo, and finally, a baby.

Question 2

What two types of fertilisation are there?

Answer 2

External fertilisation and internal fertilisation.

Question 3

What is external fertilisation?

Answer 3

When the egg gets fertilised outside of the female’s body.

Question 4

What is internal fertilisation?

Answer 4

When the egg gets fertilised inside of the female’s body.

Question 5

What is good about external fertilisation?

Answer 5

They have lots of offspring (children), short gestation (pregnancy). This happens in fish, amphibians and reptiles.

Question 6

What is bad about external fertilisation?

Answer 6

The offspring have no parental care, survival rate is low, long time for young to develop. This happens in fish, amphibians and reptiles.

Question 7

What is bad about external fertilisation?

Answer 7

The offspring have no parental care, survival rate is low, long time for young to develop.

Question 8

What is good about internal fertilisation?

Answer 8

The offspring have a lot of parental care, survival rate is high.

Question 9

What is bad about internal fertilisation?

Answer 9

They have few offspring (children), long gestation (pregnancy), takes a long time for young to develop. This happens in birds and mammals.