Photosynthesis

Question 1

What 4 things do plants require to make food?

Answer 1

Carbon dioxide( from air), water and mineral salts (from soil), and energy from the sun

Question 2

Which part of a plant makes its food?

Answer 2

Leaves (they have a large surface area for the capture of sunlight)

Question 3

What part of a plant absorbs water?

Answer 3

Roots

Question 4

What is the processes called that plants use to make food?

Answer 4

Photosynthesis

Question 5

Is all of the food used immediately?

Answer 5

No, some of it is stored.

Question 6

What part of the leaves absorbs the sun’s energy and makes the food?

Answer 6

Chlorophyll

Question 7

What color does chlorophyll make a plant’s leaves?

Answer 7

Green

Question 8

Where do plants store food?

Answer 8

In their leaves, stems, flowers, roots , seeds and fruit

Question 9

What forms of food may be stored?

Answer 9

Starch, sugar, oil, protein and minerals

Question 10

During photosynthesis, a plant produces glucose and another product. What is that product?

Answer 10

Oxygen

Question 11

What form of food is stored in a plant’s leaves?

Answer 11

A sugar called glucose

Question 13

What other food type may glucose be changed into?

Answer 13

Starch, protein and oil

Question 14

Give an example of plants/ parts of plants that store glucose.

Answer 14

Sugarcane, apples, bananas

Question 15

Give an example of plants/ parts of plants that store starch.

Answer 15

Wheat, maize, rice

Question 16

Give an example of plants/ parts of plants that store oily food.

Answer 16

Nuts, sunflower seeds, olives

Question 17

Give an example of plants/ parts of plants that store protein.

Answer 17

Soya, peas, beans

Question 18

Why do the leaves of plants have little food-value ( nutritional-value) to humans?

Answer 18

Plants can’t store much food in their leaves, and the food is not generally of the right type for humans.

Question 19

Why do humans eat plant leaves today?

Answer 19

They contain vitamins, minerals and water required by human bodies.

Question 20

Give examples of plants that store food in their stems.

Answer 20

Kohl-rabi, asparagus, potatoes and sugar-cane.

Question 21

What type of stem is a potato?

Answer 21

A tuber

Question 22

What type of food does a potato contain?

Answer 22

Starch

Question 23

Give examples of plants that store food in flowers.

Answer 23

Broccoli, artichoke and cauliflower

Question 24

Give an example of plants that store their food in roots.

Answer 24

Carrots, beetroot, radish, sweet potatoes

Question 25

What show that carrots are roots?

Answer 25

The tiny side roots on the thick, orange- colour roots

Question 26

What is a staple food?

Answer 26

A food which is the main part of someone’s diet

Question 27

Give examples of seeds which are staple foods.

Answer 27

Wheat, mealies, rice, peas, beans, peanuts and sunflower seeds

Question 28

What type of food is stored in seeds?

Answer 28

Starch

Question 29

Name an exception from the rule that starch is stored in seeds.

Answer 29

Unripe peas contain sugar. This turns into starch and protein as the peas ripen.

Question 30

How can you tell that a part of the plant is a fruit?

Answer 30

It contains seeds, or a single seed