Autumn Term

Question 1

What do roots do?

Answer 1

• Absorb nutrients and water

- Helps the plant stand up

Question 2

What does the flower do?

Answer 2

• It is for pollination

- Attracts insects

Question 3

What does the leaf do?

Answer 3

• It is used in photosynthesis, to make energy using the chlorophyll.

Question 4

What does the stem do?

Answer 4

• It holds up the plant

- It has xylem tissues that get the nutrients and water around the plant

Question 5

What does the berry/ fruit do?

Answer 5

• It holds seeds

- The seed probably travels further than pollen

Question 6

What do thorns do?

Answer 6

• They protect the plant from being eaten by animals

Question 7

What is the plants structure like as a whole?

Answer 7

The plant is a complex structure that collaborates well with different parts of the plant in order to survive. All parts are linked together to provide nutrients, water and energy to all aspects of the plant.

Question 8

What does the stomata do?

Answer 8

It allows gas exchange and water loss

Question 9

What does the cuticle do?

Answer 9

It protects the leaf from infection and stops water loss without blocking light.

Question 10

What does xylem tissue do?

Answer 10

It brings water and minerals around the plant.

Question 11

What does the upper epidermis do?

Answer 11

It protects and is transparent to let light through for photosynthesis.

Question 12

What does the guard cell do?

Answer 12

It changes the stomata’s shape.

Question 13

What do the air spaces do?

Answer 13

They let carbon dioxide diffuse in the leaf.

Question 14

What do the chloroplasts do?

Answer 14

They absorb sunlight for photosynthesis.

Question 15

What does the lower epidermis?

Answer 15

It protects the leaf from damage.

Question 16

What does the spongey layer do?

Answer 16

It holds air spaces.

Question 17

What does phloem do?

Answer 17

it transports sugars from the leaf to other parts of the plant.

Question 18

What does the palisade layer do?

Answer 18

It absorbs more light and increase the rate of photosynthesis

Question 19

What substance goes blue-black when iodine is added to it?

Answer 19

Starch

Question 20

What process makes starch?

Answer 20

Photosynthesis

Question 21

Is this true?

starch is made in the leaves that are photosynthesising. Photosynthesis only happens in the light.

Answer 21

True

Question 22

What is sexual reproduction?

Answer 22

It is where two parents are needed to produce a living species.

Question 23

What is asexual reproduction?

Answer 23

When only one parent is needed to produce a living organism.

Question 24

What part of the flower is the male reproductive organ?

Answer 24

Stamen

Question 25

What part of the flower is the female reproductive organ?

Answer 25

Carpel.

Question 26

What test do you do for photosynthesis?

Answer 26

- You could test a leaf for starch. - If it was pond weed you could completely cover it in water, put it in sunlight and see whether there are any bubbles. To test whether it produces it oxygen, you can collect the gas, put a glowing splint and see whether it sets on fire.

Question 27

What do plants need in order to survive and reproduce?

Answer 27

They need: - Leaves for photosynthesis else the plant wouldn’t get much energy - Stem to stand up and transport nutrients else it would fall over and nutrients would stay where they were - Berries/flowers/fruit to reproduce or carry seeds else it can’t reproduce - Thorns/ protection to stop other animals eating it - Roots to stabilise or get nutrients and water else it would fall over and starve.

Question 28

How are leaves adapted for photosynthesis?

Answer 28

- They contain lots of chloroplasts which are little packets containing chlorophyll, which traps light for photosynthesis. Most of the chloroplasts are close to the surface, where they can get the most amount of sunlight. - Leaves are broad so they have a large surface area to absorb light. - The underside of the leaf has lots of stomata, they allow carbon dioxide to diffuse into the leaf and oxygen to diffuse out. - Air spaces in the leaf allow carbon dioxide to move around the leaf cells. - Leaves have a network of veins carrying water to the leaf cells to take away the glucose.

Question 29

What is the word equation for photosynthesis?

Answer 29

Carbon dioxide + water -> glucose + oxygen + water | Chlorophyll

Question 30

What factors affect the rate of photosynthesis?

Answer 30

- Intensity of light - The amount of carbon dioxide - Temperature - Whether it is overcrowded

Question 31

How do you test the rate of photosynthesis?

Answer 31

You can see how many bubbles come with a certain amount of light at a certain distance and compare between plants.

Question 32

What is animal dispersal?

Answer 32

Animal dispersal is either where the fruit gets eaten, transported and then pooped out somewhere else by an animal, or where fruits hooks onto an animal until it comes off somewhere else.

Question 33

What is explosion dispersal?

Answer 33

Explosion dispersal is where the seeds get flicked, pushed, squirted and so on out to spread around.

Question 34

What is drop and roll dispersal?

Answer 34

This is where heavy fruits fall or drop of the plant, sometimes they smash when they hit the ground and the seed spill out or they could be carried far away by water or animals.

Question 35

What is insect pollination?

Answer 35

Insect pollination is where an insect is attracted to the plant and manages to stick to the insect, then go to another plant and get rubbed on the stigma.

Question 36

What is wind pollination?

Answer 36

Wind pollination is where the pollen from the stamen is transferred by the wind to another plant.

Question 37

What is self pollination?

Answer 37

This is where pollen is transferred from the stamen to the stigma on the same plant.

Question 38

What is cross pollination?

Answer 38

This is where pollen is transferred from the stamen of one plant to the stigma of a different plant. Cross pollination can involve insect pollination or wind pollination.

Question 39

Name some features of an insect pollinating plant

Answer 39

- Bright colours on petals to attract the insect - Scented flowers with nectaries to feed the insect - Sticky stigma to take off the pollen that the insect has gathered from other plants.

Question 40

Name some features of a wind pollinating plant

Answer 40

- Usually dull petals on the flower as it doesn’t need to attract insects - No scent - No nectaries - Feathery stigma to catch pollen as it is carried past in the wind