Biology Reproduction Topic- Key Knowledge

Question 1

What does sexual reproduction involve?

Answer 1

Gametes (sex cells) from two parents, e.g sperm cell and egg cell, pollen grain and ovum

Question 2

Gametes contain 50% of genetic information, so they are..

Answer 2

Haploid

Question 3

What is the cell division process called?

Answer 3

Meiosis

Question 4

What is fertilisation?

Answer 4

When the nuclei of two gametes fuse to form a diploid cell

Question 5

What is the genetic difference between asexual and sexual reproduction?

Answer 5

Asexual- offspring are genetically identical to parents
Sexual- offspring vary genetically with parents

Question 6

What does asexual reproduction involve?

Answer 6

The dividing of diploid cells (mitosis) to form more diploid cells

Question 7

What is FSH’s role in the menstrual cycle?

Answer 7

Produced in the pituitary gland, causes an egg to mature in one of the ovaries, stimulates production of oestrogen in the ovaries

Question 8

What is LH’s role in the menstrual cycle?

Answer 8

Produced in the pituitary gland, stimulates ovulation

Question 9

What is the role of the placenta in the development of an embryo?

Answer 9

Attaches to the uterus wall and produces progesterone to maintain it, filters out harmful waste and CO2 and delivers oxygen, glucose and nutrients through umbilical cord