Year 9 Science Photosynthesis and Plants Flashcards

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1
Q

What happens to the rate of photosynthesis when the heat reaches the turning point?

A

Stops because of enzymes die-off.

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2
Q

Why does the rate of photosynthesis level when the light intensity reaches MAX?

A

Levels off because it requires the rest of the reactants for photosynthesis.

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3
Q

Why do marine plants die when the algae are formed?

A

Because the light can’t reach the bottom

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4
Q

What’s in Fertilizer helps the plant grow?

A

Nitrogen phosphorus and potassium compounds

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5
Q

Whats transpiration?

A

The transportation of water and minerals up the xylem

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6
Q

Why do leaves fall off in winter?

A

Deficient in light.

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7
Q

What are the three ingredients for Photosynthesis?

A

Carbon Dioxide Water and Light.

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8
Q

What’s the first thing in the food chain called?

A

Producer.

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9
Q

What’s Trophic Level mean?

A

Level in the food chain.

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10
Q

Where is Carbon Dioxide entered into the plant?

A

Stoma.

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11
Q

Give two adaptations to the root hair cells?

A

Large Surface Area and lots of mitochondria great for the energy for the active transport of water and minerals.

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12
Q

What’s a herbivore?

A

Plant eater.

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13
Q

How much energy is passed on to every animal?

A

10%.

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14
Q

What do farmers use to stop animals from eating plants?

A

Pesticides.

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15
Q

What’re the thylakoids?

A

Stacks of Grana where the photosynthesis reaction occurs containing chlorophyll.

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16
Q

Describe the Thylokoid Process:

A

So light energy reaches the granum where it is reacted with the chlorophyll causing electrons to gain energy and escape to photosystem 1 where the same thing happens but on the way, the electrons split the water to hydrogen and oxygen and after this, they get to the photosystem 1 where chlorophyll is further energized.
This is light energy.