Chapters 14-15: Reproduction and Variation

Question 1

What is asexual reproduction?

Answer 1

A type of reproduction involving only 1 parent, creating genetically identical offspring (however they may appear different due to environmental variation). There is no fusion of gametes and the only type of cell division involved is mitosis

Question 2

What is binary fission?

Answer 2

When a bacteria reproduces asexually by splitting in two

Question 3

What is vegetative reproduction?

Answer 3

Any asexual reproduction without forming seeds or spores

Question 4

What is sexual reproduction?

Answer 4

A type of reproduction involving 2 parents, creating offspring with DNA from both parents. The male gamete and the female gamete fuse and fertilisation occurs

Question 5

What are the gametes in plants?

Answer 5

Pollen and ova

Question 6

Why do animals that do not care for their young need to produce more ova?

Answer 6

To increase the number of their offspring that reach sexual maturity

Question 7

What is selective breeding?

Answer 7

A process where humans choose animals to breed together so that their offspring have more desirable characteristics

Question 8

Why do non-identical twins form?

Answer 8

A woman releases 2 eggs during ovulation which are fertilised by 2 different sperm and develop simultaneously in the uterus

Question 9

Why do identical twins form?

Answer 9

One fertilised egg splits into 2 cells, which each develop into identical fetuses