Sexual Reproduction

Question 1

What would happen if living things didn’t reproduce?

Answer 1

If they were unable to reproduce, they would become exctinct

Question 2

What is the biological word for sex cells?

Answer 2

Gametes

Question 3

What are the animal gametes (male and female)

Answer 3

Sperm and egg

Question 4

What are the plant cell gametes?

Answer 4

Pollen grain (male) and ovule (female)

Question 5

What is the function of the sepal?

Answer 5

Protects the flower bud

Question 6

What is the function of a petal?

Answer 6

Attracts insects

Question 7

What is the function of the stamen?

Answer 7

Male part of flower

Question 8

What is the function of the anther?

Answer 8

Produces pollen grains

Question 9

What is the function of the stigma?

Answer 9

Catches pollen grains

Question 10

What is the function of the ovary?

Answer 10

Contains ovules

Question 11

What is the function of the nectary?

Answer 11

Produces nectar to attract insects

Question 12

What is pollination?

Answer 12

Pollination is the transfer of pollen (male gamete) from the anther to the stigma

Question 13

How are plants pollinated?

Answer 13

Plants are pollinated by insects or the wind

Question 14

If pollination is in the same flower it is called?

Answer 14

Self pollination

Question 15

Is pollination is between different flowers it is called?

Answer 15

Cross pollination

Question 16

What is plant fertilisation?

Answer 16

When the nucleus of the male gamete fuses with the female gamete

Question 17

Where does plant fertilisation take place?

Answer 17

In the ovary

Question 18

Explain pollination

Answer 18

A pollen tube grows down from the pollen grain to the ovary. The male gamete travels down the pollen tube to the ovary and the nucleus fuses with the ovule nucleus

Question 19

What is the function of the seed coat?

Answer 19

To protect the seed

Question 20

What is the function of the food store?

Answer 20

Provides energy for the embryo to grow into the new plant

Question 21

What is the function of the embryo in the seed?

Answer 21

Becomes the new plant

Question 22

What three things are needed for germination?

Answer 22

Water, oxygen and warmth

Question 23

What is the function of the testes?

Answer 23

Sperm production

Question 24

What is the function of the sperm duct?

Answer 24

Sperm travel along here to get to the penis

Question 25

What is the function of the penis?

Answer 25

Sexual organ which allows sperm to enter vagina

Question 26

What is the function of the urethra?

Answer 26

Tube which releases sperm

Question 27

What is the function of the uterus?

Answer 27

Area that fertilised egg develops into a baby

Question 28

What is the function of the ovary?

Answer 28

Produces eggs

Question 29

What is the function of the vagina?

Answer 29

Allows penis to enter during sexual intercourse

Question 30

What is the function of the oviduct?

Answer 30

Eggs travel along here to the uterus. SITE OF FERTILISATION

Question 31

Explain fertilisation in humans

Answer 31

Sperm cells are released and travel through the cervix and uterus towards the oviduct. In the oviduct, one sperm burrows into the egg and THE NUCLEI OF EACH GAMETE FUSE forming a diploid zygote. Zygote divides by mitosis as it travels along the oviduct, becomes a ball of cells called an embryo Embryo will grow and develop into a foetus. Site of implantation is where the placenta forms

Question 32

Why must all living things reproduce?

Answer 32

To produce offspring similar to themselves