photosynthesis and plant growth Flashcards

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1
Q
  1. what is photosynthesis ?
A

The process plants use to make their own food (glucose) . using the energy from sunlight .

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2
Q
  1. what kind of chemical reaction is photosynthesis ?
A

photosynthesis is an endothermic .

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3
Q
  1. what is the main product produced during photosynthesis?
A

Glucose

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4
Q
  1. what is glucose stored as ?
A

Glucose is stored as starch

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5
Q
  1. what reagent is tested for starch ?
A

Iodine solution is a test for starch

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6
Q

why are there not many plants in sandy deserts ?

A

This is because there is no water .

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7
Q

what are the raw materials for photosynthesis ?

A

The raw materials are carbon dioxide and water

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8
Q

what are the product for photosynthesis ?

A

The products are glucose and oxygen

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9
Q

what makes chloroplast green ?

A

Chlorophyll

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10
Q

all organism carry out seven life process ,

A
M = Movement 
R = Respiration 
S = Sensitivity 
G = growth 
R = Reproduction 
E = Excretion 
N = Nutrition
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11
Q

write the word equation for photosynthesis

A

Carbon dioxide + water –> glucose + oxygen

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12
Q

what gas from the air need to enter leaves through a stomata , for photosynthesis ?

A

Carbon Dioxide

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13
Q

what cells Bring the liquid raw material for photosynthesis into a leaf ?

A

xylem cells

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14
Q

How oxygen gets out of a leaf ?

A

Through stomata

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15
Q

why is light not a raw material for photosynthesis ?

A

This is because it is not a chemical substance

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16
Q

what are the four elements that a plant needs grow and develop ? what are the functions ? what happens if they didn’t get the elements ?

A
  1. Nitrogen . Function :To make Protein . effect : stunned growth
  2. Magnesium . Function : To make chlorophyll . Effect : without chlorophyll plant can’t photosynthesis.
  3. potassium . Function : absorbs water for photosynthesis . effect : the plants will become brown without water
  4. phosphorus . Function : for respiration and growth . Effect : stunned growth .
17
Q

what are the risk when using iodine solution ? how to control the risk?

A

Stains skin and clothes

how to : Don’t touch the iodine solution with bare hands and keep clothes away from iodine solution .

18
Q

what else do plants take in other than water and carbon dioxide

A

nitrate and it used for growth