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Science 8a > EDUCAKE > Flashcards

EDUCAKE Flashcards

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Biology 101 flashcards
1
Q

Some species of _ _ _ _ _ _ _ _ use a variety of chemical reactions to make glucose

A

Bacteria

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2
Q

What is Glucose?

A

A carbohydrate

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3
Q

A carbohydrate is used in a process. What is it known as?

A

Chemosynthesis

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4
Q

Is glucose a product?

A

Yes

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5
Q

Chemosythesis uses what as their source of energy?

A

Chemicals

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6
Q

Give one reactant?

A

Carbon Dioxide

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7
Q

The leaves of green plants absorb what from the light which originates from the sun?

A

Energy

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8
Q

What do plants need for photosynthesis from the air arounf them?

A

carbon dioxide

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9
Q

What are guard cells?

A

Guard cells arespecialised cells found in the leaves of green plants. They control the size of the stomata

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10
Q

What are xylem tissues adapted to?

A

Xylem tissues is adapted to transport water containing dissolved mierals around plants.

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11
Q

What are roots mostly needed for?

A

To absorb water from the soil

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12
Q

What are yellow leavers an indication for?

A

an indication of a lack of chlorophyll or magnesium

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13
Q

Where does photosynthesis mostly occur?

A

In the palisade cells

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14
Q

What will happen if the plant is losing water?

A

The stomata will close

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15
Q

What mineral does green plants need?

A

Mineral to male the pigment chlorophyll

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16
Q

What is normally found in the soil which is from plants?

A

Nitrate ions

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17
Q

Where is energy stored in a green plant?

A

Energy is stored in green plants as a chemical energy store

18
Q

What do Fertiliseres do?

A

Fertilisers contain a range of minerals to help the plant grow strongly.

18
Q

What is carbon dioxide needed for?

A

The gas carbon dioxide, found in the atmosphere, is needed by plants for photosynthesis.

19
Q

What happens if the air around the plant is very dry?

A

If the air surrounding a plant’s leaves is very dry, the air bubble will move faster along the glass tube.

20
Q

what do green plant absorb?

A

Green plants absorb energy from sunlight.

20
Q

Where is most of the water vapour lost from?

A

the leaves.

21
Q

Where do terrestrials get there nutrients from?

A

Land-living (terrestrial) plants get their nutrients from the soil in which their roots grow.

21
Q

What is photosynthesis?

A

Plants transform energy from the Sun into stored energy in their leaves by a process called photosynthesis.

22
Q

What is the gas oxygen?

A

The gas oxygen is the waste product of photosynthesis.

23
Q

The gas exchange area of leaves is greatly increased by the presence of internal air spaces.
True or false?

A

False

24
Q

When is most oxygen let out?

A

Green plants photosynthesise during the hours of daylight. Most oxygen is released at midday when photosynthesis occurs at its maximum rate.

25
Q

What is an essential requirement for photosynthesis?

A

Water is an essential requirement for photosynthesis. It is absorbed from the soil by osmosis.

26
Q

Where is sugar produced on the Green Plants?

A

In green plants, sugars are produced in the leaves by photosynthesis.

26
Q

What are roots covered in?

A

Roots are covered in hundreds of microscopic projections called root hairs. These give the roots a greater surface area for absorption.

27
Q

Where does gas exchange occur?

A

Gas exchange occurs through the stomata, which are tiny pores on the underside of a leaf.

28
Q

What is an epidermal tissue?

A

Epidermal tissue is found covering the organs of plants. It has a protective role.

29
Q

What does photosynthesis produce?

A

Photosynthesis produces oxygen gas. This is removed from a plant’s leaves during the day.

30
Q

What are plant organs specialised to do?

A

Leaves are plant organs specialised to absorb light for photosynthesis.

30
Q

What is Carbon dioxide?

A

Carbon dioxide is the gas that is removed from the air by green plants during photosynthesis.

31
Q

What is a stem?

A

The stem is a plant organ specialised to transport substances up and down a plant from the root to the leaves and leaves to roots.

32
Q

What can Stomatas do?

A

Stomata can open and close. The size of the pore is controlled by a pair of guard cells.

33
Q

What are Stomata?

A

Stomata are tiny pores on the surface of leaves. They allow the gas carbon dioxide, present in the atmosphere, to diffuse into the leaf.

34
Q

Where is the palisade mesophyll just above?

A

Epidermis

35
Q

What are roots covered in?

A

Root hair cells

36
Q

What do veins present in plants?

A

The veins present in plants are composed of xylem and phloem tissues.

37
Q

What happenes if a plant is stunned?

A

If the growth of a plant is stunted, it is deficient in nitrate ions.

Science 8a (10 decks)

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