B1.4.1 - Photosynthesis Flashcards Preview

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Flashcards in B1.4.1 - Photosynthesis Deck (19):
1

What do plants have to take in to create food?

Carbon dioxide
Water

2

Where does carbon dioxide diffuse through in photosynthesis?

Stomata

3

How do plants obtain water?

Through the root hair cells (in the roots) via osmosis

4

What are the reactants in photosynthesis?

Water and carbon dioxide

5

What are the products in photosynthesis?

Oxygen and glucose

6

Where does the wasted oxygen go in photosynthesis?

It is released into the environment

7

Where does photosynthesis take place in a plant?

The chloroplasts

8

Why are stems and leaves green?

They contain chlorophyll in their chloroplasts

9

What is chlorophyll?

A green pigment

10

From where do the plants obtain light energy?

The sun

11

Where does glucose store its energy during photosynthesis?

Within its chemical bonds

12

How many main stages of photosynthesis reactions are there?

2

13

Explain the light dependant photosynthesis main stage

Energy transferred from light splits water molecules into oxygen gas and hydrogen ions

14

Explain the non-light dependant photosynthesis main stage

Carbon dioxide gas combines with the hydrogen molecules to create glucose

15

What type of reaction is photosynthesis?

Endothermic

16

What does photosynthesis being an endothermic reaction mean?

It needs to transfer energy from its surroundings to keep it going

17

What do plants use the glucose produced for?

Respiration
Conversion into other sugar molecules
Conversion into starch

18

Why do plants convert unneeded glucose into starch?

To provide a store of energy and to help with respiration during the night when there is no light

19

What can chemical reactions in plants create?

Sugars, starch, protein, cellulose, fats and more