Plants

Question 1

Flower

Answer 1

• Flower is for reproduction
• It makes seeds
• It contains male and female sex organs

Question 2

Leaf

Answer 2

• Makes food for the plant (photosynthesis)
• Cools the plant when water vapour passes through it
• Allows the exchange of carbon dioxide and oxygen
• Leaf stores food (e.g. lettuce, cabbage, cress, spinach)

Question 3

Fruit

Answer 3

• Protectsseeds
• Provides food for seeds

Question 4

The bus

Answer 4

• Allows new leaves and flowers to grow

Question 5

Stem

Answer 5

• The stem allows the transport of food, water and minerals around the plant
• It also supports the plant and holds it upright
• Stems store food (e.g. potato)

Question 6

Roots

Answer 6

• Anchor and support
• Take in water and nutrients
• Store food (e.g. carrots and turnips)

Question 7

Transpiration

Answer 7

• Transpiration is the loss of water vapour from the stomata of the leaves.
• The stomata are little holes on the underside of the leaves.
The flow of water from the roots, up through the plant, and out the leaves is called the transpiration stream.

Question 8

Xylem

Answer 8

Water is absorbed up through the roots, and travels to the leaves and the tips of the plant through the xylem.

Question 9

Phloem

Answer 9

Food from the leaves travels to other parts of the plant in the phloem.

Question 10

Stomata

Answer 10

The stomata are little holes on the underside of the leaves.

Question 11

Transpiration stream

Answer 11

The flow of water from the roots, up through the plant, and out the leaves is called the transpiration stream.

Question 12

Male sex cells are called pollen
Female sex cells are the egg

Answer 12

The pollen and egg fuse to make a seed

Question 13

Sepal

Answer 13

Protects the flower before it blooms

Question 14

Petals

Answer 14

Coloured and scented to attract insects

Question 15

Male parts

Answer 15

Stamen made up of filament and anther

Question 16

Filament

Answer 16

Holds up anther

Question 17

Anther

Answer 17

Makes pollen

Question 18

Female parts

Answer 18

Carpel, made up of the stigma, style and ovary

Question 19

Ovary

Answer 19

Makes the egg or ovulen

Question 20

Stigma

Answer 20

Pollen lands and sticks to it

Question 21

Style

Answer 21

Makes a tube for the pollen (male gamete) to travel down to the egg (female gamete)

Question 22

Pollination

Answer 22

Is the transfer of the pollen from the stamen of one plant to the carpel of the another

Question 23

5 stages of sexual reproduction

Answer 23

1. Pollination 2. Fertilisation 3. Seed and fruit formation 4. Seed dispersal 5. Germination

Question 24

Fertilisation

Answer 24

Fertilisation is the fusion of the male gamete nucleus with the female gamete nucleus to form a zygote

Question 25

Seed and fruit formation

Answer 25

• After fertilisation the fertilised egg becomes the seed • The ovary swells to become the fruit

Question 26

4 types of seed dispersal

Answer 26

1. Animal dispersal 2. Wind dispersal 3. Self dispersal 4. Waterdispersal

Question 27

Sees dispersal

Answer 27

• Seed dispersal is the way plants spread their seeds around • Seeds need to be carried away from the parent plant so they won’t compete for space, light, water and minerals

Question 28

Animal dispersal

Answer 28

• Animal dispersal happens when fleshy fruits are eaten by animals or birds • The seeds pass unharmed through the animal and come out in faeces somewhere else!

Question 29

Wind dispersal

Answer 29

• Wind dispersal happens when the seeds are carried on the wind • Examples are the dandelion “parachute” • And the Sycamore “helicopter”

Question 30

Self dispersal

Answer 30

• Some plants explode to release their seeds • Example pea pods

Question 31

Water dispersal

Answer 31

• When plants produce seeds to float away • Eg water lillies

Question 32

Germination

Answer 32

• Germination is the growth of seeds into a new plant • Seeds need water, oxygen and heat to germinate

Question 33

Asexual reproduction

Answer 33

Asexual reproduction involves only one parent. Geraniums can grow from cuttings, tulips and daffodils make bulbs, strawberry plants and buttercups use runners Asexual reproduction results in an exact copy of the parent plant, or a clone

Question 34

Photosynthesis

Answer 34

“photo” means light... “synthesis” means to make... ...so what do you think the word photosynthesis could mean? Photosynthesis is the process where green plants make food using light energy

Question 35

Why are leaves and plants green

Answer 35

• Because the contain Chlorophyll which is a green chemical needed for photosynthesis • Chlorophyll isfoundinChloroplasts in plant cells

Question 36

Photosynthesis

Answer 36

Carbon dioxide +water chlorophyll/sunlight oxygen + glucose.

Question 37

How are leaves designed for photosynthesis

Answer 37

They are flat and thin

Question 38

Stomata

Answer 38

Little holes on the under side of leaves for gas exchange

Question 39

Where do plants get carbon dioxide from

Answer 39

Carbon dioxide comes from the atmosphere Water comes in through the roots from the soil

Question 40

What do plants do with glucose

Answer 40

I Like us plants use glucose for growing and repairing damaged parts If they don’t use it they store it as starch this is why we can eat plants that store starch such as potatoes and wheat!