Test: Plant Nutrition (biology)


Plant NutritionVersión en línea Take this 20 question multiple choice quick quiz to test your knowledge of this topic. You only have 5 lives! por Richard Limb 1 The correct word equation for photosynthesis is a Water + oxygen - carbon dioxide + glucose b Carbon dioxide + water - glucose + oxygen c Water + glucose - carbon dioxide + oxygen d Glucose + oxygen - carbon dioxide + water 2 4 limiting factors to photosynthesis are a Light intensity, temperature, carbon dioxide concentration, leaf surface area b Time, light intensity, mass of the leaf, pH c Oxygen concentration, pH, time, number of stomata d Number of chloroplasts, oxygen concentration, light intensity, pH 3 A graph showing the effect of light intensity on the rate of photosynthesis will curve off after a time and remain flat. Why is this? a Enzymes in the leaf begin to denature b The plant does not have enough leaves to produce a maximum rate c Stomata begin to close d Limiting factors are now present 4 The 2 main photosynthetic layers in a leaf are a Palisade mesophyll and upper epidermis b Spongy mesophyll and lower epidermis c Palisade mesophyll and spongy mesophyll d Upper epidermis and lower epidermis 5 Why is dry mass used as an indicator of growth? a Not all dry mass is found in the leaf b The water content in a leaf is variable c Leaves lose dry mass over time d Fresh mass is used to indicate development 6 Apart from palisade and spongy mesophyll cells, the other cells in a leaf that contain chloroplasts are a Upper epidermal cells b Lower epidermal cells c Phloem cells d Guard cells 7 In plants, glucose is used to make a New roots, new stem, leaf buds, fructose, oils b Sucrose, nectar, oils, amino acids and cellulose c Chloroplasts, chlorophyll, xylem vessels, phloem cells, nectar d Chlorophyll, pollen, petals, oils, amino acids 8 Which statement is correct? a Sucrose is a product of photosynthesis and is stored as glucose b Starch is a product of photosynthesis and is stored as sucrose c Glucose is a product of photosynthesis and is stored as starch d Starch is a product of photosynthesis and is stored as glucose 9 Which structure increases the surface area of a leaf to absorb maximum sunlight? a Leaf veins b Petiole c Midrib d Lamina 10 Why must a leaf be destarched first, before testing it for starch in a photosynthesis experiment? a Starch removal makes the leaf easier to see under a microscope b To see if the factor that is being tested is responsible for any starch present in the leaf c Starch adds mass to the leaf d Starch can effect osmosis 11 The element needed for chlorophyll production in the leaf is a Magnesium b Nitrogen c Iron d Phosphorus 12 A plant leaf weighs 1.56g. After drying in an oven, it now weighs 1.47g. What is the correct mass of water lost in grams and the % decrease in mass of the leaf? a 0.02g. 18% b 0.06g. 4.2% c 0.09g. 5.8% d 1.13g. 9.5% 13 The path of oxygen from the leaf to the outside is a In through the stomata, palisade mesophyll, air spaces between spongy mesophyll cells b Out through the stomata, upper epidermis, palisade mesophyll c Palisade mesophyll, in through the stomata, air spaces between spongy mesophyll cells d Palisade mesophyll, air spaces between spongy mesophyll cells, out through the stomata 14 Stomatal density is Choose one or more answers a The number of chloroplasts per unit area of the leaf b The number of stomata per unit area of the leaf c The type of stomata per unit area of the leaf d The number of guard cells per unit area of the leaf 15 The deficiency disease caused by a lack of nitrate ions is characterised by a Poor growth and yellow leaves b Purple spots on the stem and leaves c Poor growth and curled leaves d Curled and yellow leaves 16 Plants absorb mineral ions from the soil by a Osmosis and active transport b Diffusion and osmosis c A combination of diffusion, osmosis and active transport d Active transport only 17 The yellowing of plant leaves is called a Variegation b Nitrate depletion c Pigmentation d Chlorosis 18 Which structures are present in chloroplasts? a Membrane stacks, DNA, carbohydrates, ribosomes b Starch grains, ribosomes, DNA, membrane stacks c Fats, sucrose, ribosomes, starch grains d Oils, nectar, starch grains, ribosomes 19 If limiting factors were absent, what would the graph look like for an experiment testing the effect of carbon dioxide concentration on the rate of photosynthesis in a plant? a A straight, diagonal line downwards b A flat line c A constant curve downwards d A straight, diagonal line upwards, through the origin 20 Which is the correct energy change in a leaf undergoing photosynthesis? a Chemical energy into kinetic energy b Solar energy into chemical energy c Chemical energy into solar energy d Kinetic energy into chemical energy

1

The correct word equation for photosynthesis is

a

Water + oxygen - carbon dioxide + glucose

b

Carbon dioxide + water - glucose + oxygen

c

Water + glucose - carbon dioxide + oxygen

d

Glucose + oxygen - carbon dioxide + water

2

4 limiting factors to photosynthesis are

a

Light intensity, temperature, carbon dioxide concentration, leaf surface area

b

Time, light intensity, mass of the leaf, pH

c

Oxygen concentration, pH, time, number of stomata

d

Number of chloroplasts, oxygen concentration, light intensity, pH

3

A graph showing the effect of light intensity on the rate of photosynthesis will curve off after a time and remain flat. Why is this?

a

Enzymes in the leaf begin to denature

b

The plant does not have enough leaves to produce a maximum rate

c

Stomata begin to close

d

Limiting factors are now present

4

The 2 main photosynthetic layers in a leaf are

a

Palisade mesophyll and upper epidermis

b

Spongy mesophyll and lower epidermis

c

Palisade mesophyll and spongy mesophyll

d

Upper epidermis and lower epidermis

5

Why is dry mass used as an indicator of growth?

a

Not all dry mass is found in the leaf

b

The water content in a leaf is variable

c

Leaves lose dry mass over time

d

Fresh mass is used to indicate development

6

Apart from palisade and spongy mesophyll cells, the other cells in a leaf that contain chloroplasts are

a

Upper epidermal cells

b

Lower epidermal cells

c

Phloem cells

d

Guard cells

7

In plants, glucose is used to make

a

New roots, new stem, leaf buds, fructose, oils

b

Sucrose, nectar, oils, amino acids and cellulose

c

Chloroplasts, chlorophyll, xylem vessels, phloem cells, nectar

d

Chlorophyll, pollen, petals, oils, amino acids

8

Which statement is correct?

a

Sucrose is a product of photosynthesis and is stored as glucose

b

Starch is a product of photosynthesis and is stored as sucrose

c

Glucose is a product of photosynthesis and is stored as starch

d

Starch is a product of photosynthesis and is stored as glucose

9

Which structure increases the surface area of a leaf to absorb maximum sunlight?

a

Leaf veins

b

Petiole

c

Midrib

d

Lamina

10

Why must a leaf be destarched first, before testing it for starch in a photosynthesis experiment?

a

Starch removal makes the leaf easier to see under a microscope

b

To see if the factor that is being tested is responsible for any starch present in the leaf

c

Starch adds mass to the leaf

d

Starch can effect osmosis

11

The element needed for chlorophyll production in the leaf is

a

Magnesium

b

Nitrogen

c

Iron

d

Phosphorus

12

A plant leaf weighs 1.56g. After drying in an oven, it now weighs 1.47g. What is the correct mass of water lost in grams and the % decrease in mass of the leaf?

a

0.02g. 18%

b

0.06g. 4.2%

c

0.09g. 5.8%

d

1.13g. 9.5%

13

The path of oxygen from the leaf to the outside is

a

In through the stomata, palisade mesophyll, air spaces between spongy mesophyll cells

b

Out through the stomata, upper epidermis, palisade mesophyll

c

Palisade mesophyll, in through the stomata, air spaces between spongy mesophyll cells

d

Palisade mesophyll, air spaces between spongy mesophyll cells, out through the stomata

14

Stomatal density is

Choose one or more answers

a

The number of chloroplasts per unit area of the leaf

b

The number of stomata per unit area of the leaf

c

The type of stomata per unit area of the leaf

d

The number of guard cells per unit area of the leaf

15

The deficiency disease caused by a lack of nitrate ions is characterised by

a

Poor growth and yellow leaves

b

Purple spots on the stem and leaves

c

Poor growth and curled leaves

d

Curled and yellow leaves

16

Plants absorb mineral ions from the soil by

a

Osmosis and active transport

b

Diffusion and osmosis

c

A combination of diffusion, osmosis and active transport

d

Active transport only

17

The yellowing of plant leaves is called

a

Variegation

b

Nitrate depletion

c

Pigmentation

d

Chlorosis

18

Which structures are present in chloroplasts?

a

Membrane stacks, DNA, carbohydrates, ribosomes

b

Starch grains, ribosomes, DNA, membrane stacks

c

Fats, sucrose, ribosomes, starch grains

d

Oils, nectar, starch grains, ribosomes

19

If limiting factors were absent, what would the graph look like for an experiment testing the effect of carbon dioxide concentration on the rate of photosynthesis in a plant?

a

A straight, diagonal line downwards

b

A flat line

c

A constant curve downwards

d

A straight, diagonal line upwards, through the origin

20

Which is the correct energy change in a leaf undergoing photosynthesis?

a

Chemical energy into kinetic energy

b

Solar energy into chemical energy

c

Chemical energy into solar energy

d

Kinetic energy into chemical energy

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