Nutrition In Plants

Question 1

What are the types of nutrition?

Answer 1

Autotrophic nutrition and heterotrophic nutrition

Question 2

What is autotrophic nutrition?

Answer 2

Organisms using simple inorganic substances to make complex organic food substances. Organisms that do this are called autotrophs.

Question 3

What is heterotrophic nutrition?

Answer 3

Organisms using complex organic food substances from other organisms. Organisms that do this are called heterotrophs

Question 4

What is photosynthesis?

Answer 4

The process by which green plants make food from simple inorganic substances using light energy

Question 5

What is the equation for photosynthesis?

Answer 5

6CO2 + 6H2O → C6H12O6 + 6O2

Or

Carbon dioxide + water (with light and chlorophyll) → oxygen + glucose

Question 6

What are the raw materials in photosynthesis?

Answer 6

Water and carbon dioxide

Question 7

What are the conditions of photosynthesis?

Answer 7

Sunlight and chlorophyll

Question 8

What are the products of photosynthesis?

Answer 8

Glucose and oxygen

Question 9

What is the light dependent stage in photosynthesis?

Answer 9

Light is required to provide energy for the reaction and chlorophyll to absorb that energy. Light energy splits water into oxygen. This occurs in the chloroplasts

Question 10

What is the light independent stage in photosynthesis?

Answer 10

Light or chlorophyll isn’t required and can occur during the night or day. Hydrogen is added to carbon dioxide to form glucose.

Question 11

What are 4 things glucose can be used for?

Answer 11

Respiration, used to make other substances, some by-products may be transported away from the lead and storage.

Question 12

Explain glucose being used for respiration

Answer 12

Glucose is broken down to release energy for all cells of the plant

Question 13

Explain glucose being used to make other substances

Answer 13

It is converted to sucrose which may convert into other substances like starch, fats, proteins, vitamins and other compounds.

Question 14

Explain glucose by products being transported away from the leaf

Answer 14

Sucrose may end up in the growing points of the plant or it may be converted into glucose and used for respiration.

Question 15

Explain glucose being used for storage

Answer 15

Sucrose, starch and other by products of glucose may be stored in the leaves, Stems, roots or fruits of the plant.

Question 16

What do chloroplasts do?

Answer 16

It contains chlorophyll which absorbs light energy

Question 17

What do the palisade mesophyll cells do

Answer 17

It contains many chloroplasts to absorb the maximum amount of light

Question 18

What do the veins do?

Answer 18

Veins supply leaf cells with the water needed for photosynthesis and to transport the food made to other parts of the plant

Question 19

What does the cuticle do?

Answer 19

It prevents excessive water loss from the leaf.

Question 20

What does the stomata do?

Answer 20

It allows carbon dioxide to enter for photosynthesis while controlling the loss of water.