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Flashcards in Photosynthesis and Plant Responses Deck (53):
1

what is a stimulus

A stimulus is anything that causes a response in an organism

2

how to plants respond to light

Shoots will always grow upwards towards light

3

how do plants respond to gravity

roots will always grow downwards in response to gravity

4

what is a tropism

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

5

what is geotropism

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

6

what are the benefits of geotropism

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

7

what is phototropism

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

8

what are the benefits of phototropism

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

9

What do we call it that plant shoots grow towards light

positively phototropic

10

What do we call it that roots grow away from light

negatively phototropic

11

What do we call it that plant shoots grow against gravity

negatively geotropic

12

What do we call it that roots grow with gravity

positively geotropic

13

what does photo mean

light

14

what does synthesis mean

to make

15

what is photosynthesis

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

16

why are leaves and plants green

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

17

where is chlorophyll found?

Chlorophyll is found in Chloroplasts in plant cells

18

where are chloroplasts found

in plant cells

19

what part of the plant has the most chlorophyll?

The leaves and any green part of the plant have chlorophyll

20

how do plants make their food?

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

21

how does response take place in plants

Plants respond to the stimuli of Light and Gravity

22

what is a stimulus

A stimulus is anything that causes a response in an organism

23

how to plants respond to light

Shoots will always grow upwards towards light

24

how do plants respond to gravity

roots will always grow downwards in response to gravity

25

what is a tropism

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

26

what is geotropism

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

27

what are the benefits of geotropism

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

what is phototropism

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

29

what are the benefits of phototropism

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

30

What do we call it that plant shoots grow towards light

positively phototropic

31

What do we call it that roots grow away from light

negatively phototropic

32

What do we call it that plant shoots grow against gravity

negatively geotropic

33

What do we call it that roots grow with gravity

positively geotropic

34

what does photo mean

light

35

what does synthesis mean

to make

36

what is photosynthesis

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

37

why are leaves and plants green

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

38

where is chlorophyll found?

Chlorophyll is found in Chloroplasts in plant cells

39

where are chloroplasts found

in plant cells

40

what part of the plant has the most chlorophyll?

The leaves and any green part of the plant have chlorophyll

41

how do plants make their food?

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

42

how does response take place in plants

Plants respond to the stimuli of Light and Gravity

43

how do plants make and store food

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

why do some plants lose their leaves in winter?

they find it difficult to carry out photosynthesis
(save energy, not much sunlight)

45

word equation for aerobic respiration

glucose + oxygen → carbon dioxide + water

46

word equation for photosynthesis

carbon dioxide + water → glucose + oxygen

47

why are leaves flat and thin?

Leaves are flat and thin so sunlight can get through them

48

why do leaves have stomata?

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

49

what is the function of stomata?

to allow oxygen out and carbon dioxide in

50

Where do plants get carbon dioxide from?


Carbon dioxide comes from the atmosphere

51

Where do plants get water from?

Water comes in through the roots from the soil

52

what do plants do with glucose when they make it?

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

how do plants transport glucose?

Plants transport the glucose around in special cells called PHLOEM cells