B5: Reproduction in Flowering Plants

Question 1

Identify the missing label:

Answer 1

Question 2

What is the function of the anther?

Answer 2

It produces pollen

Question 3

Why are flower petals usually bright colours?

Answer 3

To attract insects/pollinators to them.

Question 4

The female reproductive parts of a flower are called the…

Answer 4

Carpel

Question 5

Name the two methods by which plants can be pollinated.

Answer 5

By wind

By insects/animals

Question 6

Identify the missing label:

Answer 6

Question 7

When pollen is transferred to the stigma it is called…

Answer 7

……pollination

Question 8

What is the female gamete in a flowering plant?

Answer 8

Ovules

Question 9

Describe the flowers of wind-pollinated plants.

Answer 9

1. Small dull petals.
2. No nectar.
3. Large amounts of pollen made.
4. Pollen is very light.
5. Anthers dangle out of plant to make easy for pollen to escape.
6. Stigma hangs out of plant so can catch pollen easier.

Question 10

Describe the flowers of a plant that is fertilised by insects.

Answer 10

1. Brightly coloured, sweet smelling petals to attract insects.
2. Some flowers make nectar which bees use to make honey.
3. Small amounts of pollen are produced.
4. Pollen is spiky so sticks to insects.
5. Anther and stigmas are held firmly in flowers so insects can rub against them.
6. Stigma has a sticky coating, so pollen sticks to it.

Question 11

Give examples of how seeds are adapted to different methods of dispersal

Answer 11

• Parachute e.g. dandelion
• Wings e.g. sycamore
• Floating in water e.g. mangrove
• Animals e.g. thistle

Question 12

What is the function of the stimga?

Answer 12

It is the sticky part of the carpel that cathes grains of pollen.

Question 13

Identify the missing label:

Answer 13

Question 14

The male reproductive parts of a flower are called the…

Answer 14

stamen

Question 15

What is the function of the ovary?

Answer 15

It contains the ovules (female gametes)

Question 16

When the nucleus of a pollen grain and ovule fuse together we call it…

Answer 16

Fertilisation

Question 17

Describe how fertilisation, in flowering plants, leads to the formation of a fruit containing seeds.

Answer 17

1. Pollen grain lands on stigma.2. Tube grows from pollen grain down through style.3. The pollen nucleus moves down the tube.4. The pollen nucleus joins with the ovule nucleus (fertilisation).5. A fruit containing seeds will then form.

Question 18

Which part of a flowering plant turns into a fruit after fertilisation has happened?

Answer 18

The ovary.

Question 19

Which part of a flowering plant turns into the seeds after fertilisation has happened?

Answer 19

Ovules

Question 20

Which 3 parts do all seeds have?

Answer 20

1. A seed coat.
2. An embryo
3. A food store (starch)

Question 21

What is the function of the seed coat of a seed?

Answer 21

It protects the seed.

Question 22

What is the function of the food store of a seed?

Answer 22

It provides food to the plant embryo before it starts to do photosynthesis.

Question 23

What do we call it when a seed first starts to grow?

Answer 23

Germination.

Question 24

What does a seed need to germinate?

Answer 24

1. Water
2. Warmth
3. Oxygen

(NOT LIGHT!!)

Question 25

Why does a seed need water to germinate?

Answer 25

It makes the seed swell up, breaks the seed coat and allows the embryo to start growing.