Photosynthesis N4 Flashcards

1
Q

What is photosynthesis?

A

The process carried out by green plants to make their own food using light energy

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2
Q

What is glucose?

A

The energy rich sugar made by green plants in photosynthesis that can be stored as starch

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3
Q

What are chloroplast?

A

Site of photosynthesis in plant cells

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4
Q

What is chlorophyll?

A

The green pigment in chloroplasts that absorb light energy for the process of photosynthesis

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5
Q

What do plants use carbon dioxide and water to produce?

A

Glucose and oxygen

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6
Q

Where does the energy for photosynthesis come from?

A

The sun

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7
Q

What is light energy converted to in glucose, and how?

A

Chemical energy using chlorophyll

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8
Q

What makes a leaf greener?

A

The amount of chloroplasts it has

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9
Q

If a leaf has more chloroplasts what can it do better?

A

Light absorption

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10
Q

What is the word equation for photosynthesis?

A

See flashcard 1a

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11
Q

What is the glucose made by photosynthesis used for?

A

For the plant to grow

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12
Q

What is starch?

A

Storage carbohydrate in plants

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13
Q

What is cellulose?

A

Substance that cell walls are made from

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14
Q

What are producers?

A

Green plants that make their own food by photosynthesis

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15
Q

What are consumers?

A

Animals that obtain their energy by eating other organisms

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16
Q

What are herbivores?

A

Animals that only eat plants?

17
Q

What are carnivores?

A

Animals that only eat other animals

18
Q

What is a food chain?

A

A diagram that shows how food energy moves from one organism to another

19
Q

What is a food web?

A

A diagram showing feeding relationships made up of many interconnected food chains

20
Q

What would happen if plants and photosynthesis weren’t a thing?

A

All life on earth would eventually die

21
Q

What does almost every food chain and food web start with?

A

Green plants acting as producers

22
Q

What do plants take in?

A

Carbon Dioxide to stop the level in the atmosphere rising to high

23
Q

What are limiting factors?

A

Factors which if in short supply can limit the rate of photosynthesis

24
Q

What can photosynthesis be affected by?

A

Temperature

25
How can photosynthesis rate be measured?
By measuring the volume of oxygen released by an aquatic plant
26
How do farmers prevent limiting factors?
Irrigation systems, artificial lighting, adding carbon dioxide to the atmosphere, heating