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bio c3 Flashcards

1
Q

root system absorbs

A

water and minerals.

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2
Q

what do plants capture

A

light energy

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3
Q

what do plants convert light energy into

A

chemcial energy

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4
Q

what are roots

A

anchors the plant and absorbs minerals and water. Often stores carbohydrates

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5
Q

shoot system absorbs

A

CO2 and light

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6
Q

what are stems

A

support the leaves and reproductive structures

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7
Q

what are leaves

A

the main photosynthetic organ of the plant

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8
Q

what is dermal tissue

A

is the plants protective covering

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9
Q

what is vascular tissue

A

carries out long distance transport of materials between the root and shoot system

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10
Q

what is ground tissue

A

Ground tissue in plants is the tissue that fills the space between the vascular tissue and used for storage, photosynthesis and support.

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11
Q

what is a cuticle

A

a waxy substance that coats the epidermal cells.help prevent water loss.non polar

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12
Q

upper epidermis

A

one cell thick and tightly packed. protects the leaf aginst any physical damage and pathogens.

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13
Q

palisade cells

A

one or more layers of tightly packed, lonng and narrow cells with many chloroplast. Site of most of the leaf’s photosynthesis

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14
Q

vascular bundle

A

a series of tubes that are visible as leaf veins. contains xylem and phloem that are tranpsort fluids.

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15
Q

xylem

A

dead cells that transport water and minerals upwards from the roots to the leaves.

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16
Q

phloem

A

alive cells that transports sugars produced by the leaves to various part of the plant

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17
Q

lower epidermis

A

one cell thick and tightly packed. protects the leaf aginst any physical damage and pathogens.

18
Q

spongy tissue cells

A

loosly packed cells containing chloroplast. carries our photosyntheisis and the air spaces between cells allows for gas transport.

19
Q

stomata

A

small opening in the epidermal layer that can open or close. Allows gasses in and out of the leaf. Has 2 guard cells that control the diamter and shape of the stomata

20
Q

root pressure pushed the xylem sap

A

up

21
Q

how is water pulled up using transpiration

A

water is pulled up the xylem tissue to replace the water that is lost

22
Q

what is cohesion

A

is the tendency of water molecules to stick to other water molecules due to hydrogen bonding.

23
Q

what is adhesion

A

is the tendency of water molecules to stick to surfaces.(Hydrophilic)

24
Q

where do most gas exchanges occur

A

stomata

25
Q

what are lenticles

A

are lens shaped opened in the bark of woody plants that enable gas exchange

26
Q

what is transpiration

A

loss of water vapour from the leaves by diffusion and evaporation

27
Q

where do most water get out from

A

through the stomata

28
Q

what happens when a guard cell gains water

A

turgid and opens up

29
Q

what happens when guard cells loose water

A

flacid and closing

30
Q

are stomatas open during the day or night

A

day

31
Q

what is a tropism

A

is any growth responce taht results in plant organs curving towards or away from stimuli

32
Q

positive tropism is growth

A

towards the stimuli

33
Q

negitive tropism is growth

A

away from the stimuli

34
Q

what is phototropism

A

growth towards or away from light

35
Q

what is growth toward light called

A

positive phototropism

36
Q

what is the darwin and darwin experiment

A

They observed the bending of seedlings towards sunlight. They used tips and tranparent tips.

37
Q

what was the conclusion for Darwin and Darwin experiment

A

the tip of the seedling detcts light and sends a signal down to the stem to control growth

38
Q

what type of signal control stem growth

A

mobile chemical

39
Q

what is the boysen jenson expiriment conclusion

A

the signal is a mobile chemical because it passes through the gelatin block but not through the mica block

40
Q

frits went experiment conclusion

A

The chemical messenger that makes the cells on the darker side longer is called auxin.

40
Q

what is gravitropism

A

is the plants repsonce to gravity

41
Q
A

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