MCQ-6: Reproduction

Which row shows the adaptive features of sperm cells?

After fertilisation, how many chromosomes are in the zygote?

The diagram shows half a flower.

After pollination, where would pollen grains be found?

Which row describes sexual reproduction?

Which statement describes human male gametes?

Which organ secretes the most progesterone during pregnancy?

What are two adaptive features of a human sperm cell?

1. jelly coat present
2. relatively high number of mitochondria
3. acrosome present
4. relatively high energy stores

Which hormone maintains the thickness of the lining of the uterus during pregnancy?

What is a possible disadvantage of in vitro fertilisation (IVF)?

Pollen grains are transferred from the anthers to the stigma. The pollen grains adhere to the sticky stigma. The statements describe what happens next.

1. The pollen grain grows a pollen tube.
2. The pollen tube enters the ovule.
3. The pollen tube grows down the style.
4. The male nucleus fuses with an egg cell nucleus.

In which order do these stages occur?

The diagram shows a woman’s menstrual cycle.

On which day does ovulation occur, and on which day could fertilisation occur?

Which method of contraception could also help prevent the spread of HIV?

Which statement about the hormone FSH is correct?

HIV is transmitted by body fluids during sexual contact.
HIV affects the immune system.
Which statement best describes the effect of HIV?

In humans, why are sperm cells produced in much greater numbers than egg cells?

There are many reasons why a woman does not become pregnant.
What can be treated by a drug that increases the secretion of FSH?

The diagram shows the cells of a mammalian embryo shortly after fertilisation.

Which is the correct description of these cells?

The concentrations of LH and oestrogen are measured during part of a menstrual cycle.
On which day does ovulation occur?

Where are oestrogen and progesterone produced during the menstrual cycle in a woman who is not pregnant?

In addition to a suitable temperature, what else is necessary for seed germination?