Nat 5 Key area 2.3 Reproduction

Gametes contain...

• three times the chromosomes compared to other body cells

• a quarter the number of chromosomes in other body cells

• half the number of chromosomes in other body cells

• twice as many chromosomes as other body cells

The cell formed at fertilisation divides to form...

• a gamete

• a zygote

• an embryo

• a nucleus

Complete the blank: All gametes are _________.

• Diploid

• Haploid

• Zygotes

• Embryos

A diploid cell contains ______ sets of chromosomes.

• one

• two

• three

• four

Which of the following is not a diploid cell?

• nerve cell

• liver cell

• zygote

• sperm

Which line in the table show correctly the chromosome complement of the mammalian cells?

• A

• B

• C

• D

Which organ in a flowering plant produces pollen?

• Anther

• Style

• Testes

• Carpel

Where in a flowering plant does fertilisation occur?

• pollen tube

• stigma

• anther

• ovary

The diagram shows the process of fertilisation. Cell R is....

• an embryo

• an ovule

• a gamete

• a zygote

Which one of the following diagram represents the process of fertilisation in plants?

• A

• B

• C

• D