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New Biology > Photosynthesis and Plant Responses > Flashcards

Photosynthesis and Plant Responses Flashcards

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1
Q

what is a stimulus

A

A stimulus is anything that causes a response in an organism

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2
Q

how to plants respond to light

A

Shoots will always grow upwards towards light

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3
Q

how do plants respond to gravity

A

roots will always grow downwards in response to gravity

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4
Q

what is a tropism

A

A tropism is the growth of a plant in response to a stimulus

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5
Q

what is geotropism

A

Geotropism is the plants response to gravity for example the roots always grow towards gravity

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6
Q

what are the benefits of geotropism

A

It makes sure plant roots travel down to find water and minerals in soil
•Having deep roots means the plant is anchored in the soil

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7
Q

what is phototropism

A

Phototropism is the plants response to light for example the shoot will always grow towards light

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8
Q

what are the benefits of phototropism

A

It makes sure plants get enough light for photosynthesis, so that they can make food

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9
Q

What do we call it that plant shoots grow towards light

A

positively phototropic

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10
Q

What do we call it that roots grow away from light

A

negatively phototropic

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11
Q

What do we call it that plant shoots grow against gravity

A

negatively geotropic

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12
Q

What do we call it that roots grow with gravity

A

positively geotropic

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13
Q

what does photo mean

A

light

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14
Q

what does synthesis mean

A

to make

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15
Q

what is photosynthesis

A

Photosynthesis is the process where green plants make food using light energy

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16
Q

why are leaves and plants green

A

Because the contain Chlorophyll which is a green chemical needed for photosynthesis

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17
Q

where is chlorophyll found?

A

Chlorophyll is found in Chloroplasts in plant cells

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18
Q

where are chloroplasts found

A

in plant cells

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19
Q

what part of the plant has the most chlorophyll?

A

The leaves and any green part of the plant have chlorophyll

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20
Q

how do plants make their food?

A

Energy from sunlight,
with chlorophyll as a catalyst, is used to
combine CO2 and H2O to form glucose and
release O2

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21
Q

how does response take place in plants

A

Plants respond to the stimuli of Light and Gravity

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22
Q

what is a stimulus

A

A stimulus is anything that causes a response in an organism

23
Q

how to plants respond to light

A

Shoots will always grow upwards towards light

24
Q

how do plants respond to gravity

A

roots will always grow downwards in response to gravity

25
Q

what is a tropism

A

A tropism is the growth of a plant in response to a stimulus

26
Q

what is geotropism

A

Geotropism is the plants response to gravity for example the roots always grow towards gravity

27
Q

what are the benefits of geotropism

A

It makes sure plant roots travel down to find water and minerals in soil
•Having deep roots means the plant is anchored in the soil

28
Q

what is phototropism

A

Phototropism is the plants response to light for example the shoot will always grow towards light

29
Q

what are the benefits of phototropism

A

It makes sure plants get enough light for photosynthesis, so that they can make food

30
Q

What do we call it that plant shoots grow towards light

A

positively phototropic

31
Q

What do we call it that roots grow away from light

A

negatively phototropic

32
Q

What do we call it that plant shoots grow against gravity

A

negatively geotropic

33
Q

What do we call it that roots grow with gravity

A

positively geotropic

34
Q

what does photo mean

A

light

35
Q

what does synthesis mean

A

to make

36
Q

what is photosynthesis

A

Photosynthesis is the process where green plants make food using light energy

37
Q

why are leaves and plants green

A

Because the contain Chlorophyll which is a green chemical needed for photosynthesis

38
Q

where is chlorophyll found?

A

Chlorophyll is found in Chloroplasts in plant cells

39
Q

where are chloroplasts found

A

in plant cells

40
Q

what part of the plant has the most chlorophyll?

A

The leaves and any green part of the plant have chlorophyll

41
Q

how do plants make their food?

A

Energy from sunlight,
with chlorophyll as a catalyst, is used to
combine CO2 and H2O to form glucose and
release O2

42
Q

how does response take place in plants

A

Plants respond to the stimuli of Light and Gravity

43
Q

how do plants make and store food

A

When sunlight is absorbed by chlorophyll in the chloroplasts, water is transported in the xylem vessel and carbon dioxide is taken in at the stomata in the leaves, glucose (food) is made in the leaves and oxygen is given out at the stomata. Food is stored as starch, which we test for using iodine.

44
Q

why do some plants lose their leaves in winter?

A

they find it difficult to carry out photosynthesis

save energy, not much sunlight

45
Q

word equation for aerobic respiration

A

glucose + oxygen → carbon dioxide + water

46
Q

word equation for photosynthesis

A

carbon dioxide + water → glucose + oxygen

47
Q

why are leaves flat and thin?

A

Leaves are flat and thin so sunlight can get through them

48
Q

why do leaves have stomata?

A

Leaves have tiny holes called STOMATA to allow oxygen out and carbon dioxide in

49
Q

what is the function of stomata?

A

to allow oxygen out and carbon dioxide in

50
Q

Where do plants get carbon dioxide from?

A

Carbon dioxide comes from the atmosphere

51
Q

Where do plants get water from?

A

Water comes in through the roots from the soil

52
Q

what do plants do with glucose when they make it?

A

Like us plants use glucose for growing and repairing damaged parts
If they don’t use it they store it as starch this is why we can eat plants that store starch such as potatoes and wheat!

53
Q

how do plants transport glucose?

A

Plants transport the glucose around in special cells called PHLOEM cells

New Biology (17 decks)

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