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biology > Plant Structure > Flashcards

Plant Structure Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

What is a limiting factor?

A

anything that constraints the rate of reaction

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2
Q

Why do farmers use greenhouses?

A

help trap heat energy
keep out pests
control conditions

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3
Q

How does wind speed affect the rate of transpiration?

A

the more quick

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4
Q

Where in the lead is the stomata found?

A

the lower epidermis

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5
Q

Is a guard cell an organ system, organ, tissue or cell?

A

a cell

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6
Q

How do plants get CO2 require for photosynthesis?

A

diffuses from the air into their leaves via stomata

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7
Q

How does the level of water in the plants affect the opening and closing of stomata?

A

the guard cells become turgid with more water and opens the stomata
the guard cells become flaccid without water and closes stomata

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8
Q

In which organelle does photosynthesis take place?

A

Chloroplast

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9
Q

how does temperature affect the rate of transpiration?

A

High temperature means more energy which means it’s more liked to evaporate out the stomata

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10
Q

What does transpiration mean?

A

the evaporation of water from the leaves of plants

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11
Q

Which 4 factors affect the rate of transpiration?

A

Temperature
Light
Humidity
Wind speed

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12
Q

Why is the upper epidermis transparent?

A

to allow light to pass through to the palisade mesophyll cells

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13
Q

Where does photosynthesis happen?

A

in the palisade mesophyll cells

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14
Q

What substance is responsible for absorbing light energy in photosynthesis?

A

Chlorophyll

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15
Q

What is the role of the xylem tissue?

A

transports water and minerals ions from the roots to the stem and leaves

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16
Q

What are 3 features is starch that make it a useful storage molecule?

A

Insoluble in water
It is compact
It can be easily broken down when needed

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17
Q

How does wind speed affect the rate of transpiration?

A

Water vapour will diffuse more quickly
There will be a stronger concentration gradient

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18
Q

is spongy mesophyll and organ or a tissue?

A

a tissue?

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19
Q

Is photosynthesis exothermic or endothermic?

A

endothermic

20
Q

Why structures minimise water loss in plants?

A

Waxy cuticle
Guard cells

21
Q

How do root hair cells absorb water form the soil?

A

Osmosis

22
Q

What is the role of the phloem tissue?

A

transports dissolved sugars and amino acids

23
Q

What is xylem tissue made of?

A

dead cells

24
Q

Where can meristem tissue be found?

A

growing tips of roots and shoots

25
Q

In which organ does most photosynthesis take place?

A

leaf

26
Q

What is the role of the phloem tissue?

A

transports dissolved sugars and amino acids

27
Q

In which directions can cell sap move through the phloem?

A

Up or Down

28
Q

What are 3 environmental factors that affect the rate of photosynthesis?

A

Temperature
Light Intensity
CO2 concentration

29
Q

What is the Phloem tissue made of?

A

elongated cells

30
Q

What are paraffin heater’s?

A

produces carbon dioxide and heat energy

31
Q

how does temperature affect the rate of transpiration?

A

Higher energy particles means its more likely to evaporate

32
Q

How does light affect the rate of transpiration?

A

more photosynthesis leads to the stomate being open more

33
Q

What are 3 factors that affect the rate of photosynthesis?

A

Temperature
Light
Carbon dioxide

34
Q

Where in the leaf are the stomate found?

A

The lower epidermis

35
Q

Which structures help to minimize water loss?

A

Waxy cuticle
Guard cells

36
Q

Where does the energy for photosynthesis come from?

A

From the sun

37
Q

What are 5 ways plants use glucose they produce?

A

Cellular respiration
Make cellulose
Make starch
Make amino acids
Make lipids

38
Q

What is cellular respiration?

A

Breaking down glucose to release energy

39
Q

In which directions can water move through the xylem?

A

Water can only move up

40
Q

What is the phloem tissue made from?

A

elongated cells which form long tubes

41
Q

What substances absorbs light for photosynthesis?

A

Chlorophyll

42
Q

What is the word formula for photosynthesis?

A

carbon dioxide + water -> glucose + oxygen

43
Q

what is the role of the phloem tissue?

A

transports dissolved sugars and amino acids

44
Q

what is the flow of cell sap through the phloem called?

A

Translocation

45
Q
A
46
Q

Why does the spongy mesophyll layer have air gaps?

A

to allow carbon dioxide to diffuse

47
Q

What is the Meristem Tissue made from?

A

Plant Stem Cells

biology (9 decks)

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