Biology 5 9B Plant growth Flashcards Preview

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Flashcards in Biology 5 9B Plant growth Deck (44)
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1

What is the equation for photosynthesis?

Water + carbon dioxide (+ light energy) ➡️ glucose + oxygen.

2

What are the reactants in the photosynthesis equation?

Water + carbon dioxide.

3

What are the products in photosynthesis?

Glucose + oxygen.

4

What are needed for photosynthesis to happen?

Light and chlorophyll.

5

What happens to light during photosynthesis?

The light energy is changed into chemical energy which is stored in the glucose that is made.

6

Root hair cells group together to form ...

Root hair tissue.

7

How do plants get water?

Water is taken out of the soil by the roots.

8

How are roots specially adapted to take in a lot of water?

They branch and spread out to absorb water from a large volume of soil. Also, root hair cells have a large surface are to help absorb water quickly.

9

Which plant cell prevents water loss from leaves?

Guard cell

10

Which raw material is needed for photosynthesis that enters the leaf through the stomata?

Carbon dioxide.

11

When does respiration happen in plants?

All the time.

12

Are you more likely to find stomata on the upper or lower side of a leaf?

.lower

13

In which part of the plant does photosynthesis happen?

Leaves

14

Why do plants have roots?

To get water from the soil and for support.

15

What are all the raw materials for photosynthesis?

Carbon dioxide and water

16

Describe the movement of gases through stomata during photosynthesis.

Oxygen moving out of the leaf.
Carbon dioxide moving into the leaf.

17

How is glucose carried around a plant?

Phloem tubes.

18

In which plant cell does the most photosynthesis happen?

Palisade cell

19

Where does the water flow up?

The xylem tubes.

20

What are the xylem tubes made of?

Hollow cells.

21

Why is water needed?

To keep the plant hydrated.
Mineral salts. - these keep plants healthy.
Stops plants from wilting.
Keeps leaves cool.

22

What does the carbon dioxide do.

Diffuses into the cells using the stomata which are small holes

23

Why are the leaves thin?

So the carbon dioxide does not need to go very far before reaching the cells that need it.

24

When can photosynthesis be sped up?

If the amount of carbon dioxide around the plant is increased.
If there is more light.

25

How do leaves trap as much sunlight as possible?

They are wide and have a large surface area.

26

Where are palisade cells?

In the upper surface of leaves.

27

Where does most photosynthesis occur?

In the palisade cells.

28

What are palisade cells packed with?

Chloroplasts.

29

Why are chloroplasts needed for photosynthesis?

They contain chlorophyll which absorbs light energy.

30

How do plant cells release energy that is stored in glucose?

Aerobic respiration.