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Chemistry Revision > Ecology > Flashcards

Ecology Flashcards

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1
Q

What energy conversion do plants carry out?

A

Convert light energy into chemical energy

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2
Q

What substance is needed in photosynthesis

A

Chlorophyll in the chloroplasts

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3
Q

When does starch form in leaves

A

Starch can only be created if there is sunlight

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4
Q

How do you test for starch

A

Iodine

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5
Q

What is the process that uses glucose synthesis in photosynthesis

A

Cellular respiration

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6
Q

How do plants store starch

A

Roots and leaves. Some develop special organs to store the starch (potatoes).

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7
Q

When light intensity increases, photosynthesis does what?

A

The rate of photosynthesis increases

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8
Q

Cellular respiration word equation

A

Glucose+Oxygen —> Water+Carbon Dioxide+Energy

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9
Q

What is ATP

A

Adenosine Tri Phosphate. Is the form of energy the body can readily use

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10
Q

Two differences between Cellular Respiration and Photosynthesis

A
  • Photosynthesis requires Chlorophyll

- Photosynthesis needs sunlight

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11
Q

Name 4 processes that use energy produced by cellular respiration

A

Moving, reproduction, growing, repairing

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12
Q

What does Xylem do? Where is it located?

A

Forces water and nutrients up throughout the plant and through the roots. Xylem is the middle part of the plant stem.

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13
Q

What does Phloem do?

A

Brings extra waste and water down the plant and also brings things up the plant. It’s a 2 way system and in the outer layers of the stem

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14
Q

What are Xylem and Phloem

A

Tissues in a plant that form tubes for transportation

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15
Q

Three mechanisms formed in the movement of water from xylem

A

Root pressure, capillarity, osmosis

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16
Q

Photosynthesis equation (chemical)

A

Sunlight
6CO2+6H2O————> C6H12O6+6O2
Chlorophyll

17
Q

What does transportation do and how does it work?

A

Releases water from the plant into the air from the stomata

18
Q

What causes wilting?

A

The transpiration rate is faster than the amount of water being absorbed by the roots

19
Q

What happens when suction is created

A

Water is being absorbed by the roots

20
Q

How is suction force created

A

By transpiration releasing water vapour

21
Q

Which part of the plant is most vital in food preparation

A

Leaves

22
Q

Why is the two way system of phloem important to the plant

A

Ensures movement to all areas of the plant. Eg glucose is only created where sunlight reaches the plant and phloem can move it to places without sunlight

23
Q

Why are roots important for plants

A

Anchors plants to the ground and provides them with water and nutrients from the soil

24
Q

Difference between root and leaf epidermis

A

Leaves use epidermis to keep water in. Epidermis in the roots allow water to be taken in

25
Q

How do root hairs increase water intakes

A

They cover more surface area in the soil

26
Q

What is transposition

A

When a plant loses it water in the leaves and stems to the atmosphere.

27
Q

What do stomata do in transpiration

A

Allows air in and release and releases excess water and wastes such as CO2

28
Q

How do root hairs increase water intake?

A

They cover more surface area in the soil

29
Q

What is photosynthesis?

A

How plants convert CO2+water into energy(glucose) and oxygen using the sunlight energy and chlorophyll

30
Q

Which part of the plant is most vital in food preparation?

A

Leaves

31
Q

Product of photosynthesis stored in leaves

A

Starch

32
Q

What confirms the presence of starch in leaves

A

Iodine

33
Q

What do plants use oxygen for?

A

To break down glucose

34
Q

What is amino acid?

A

The building block from which proteins are formed. Sub unit of protein

35
Q

What does protein do

A

Repairs and rebuilds tissue

36
Q

What is the atmosphere

A

Gaseous envelope surrounding above the earths surface

Chemistry Revision (1 decks)

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