IGCSE Biology CH 06 Review

Which row shows the raw materials needed for photosynthesis and the products of photosynthesis?

• A

• B

• C

• D

The diagram shows a cross-section through a leaf.What is the structure labelled X?

• spongy mesophyll

• palisade mesophyll

• cuticle

• stomata

Why do plants need nitrate ions?

• Nitrogen is a component of amino acids

• Nitrogen is a component of fatty acids

• Nitrogen is a component of glucose

• Nitrogen is a component of starch

Which row shows the most likely number of chloroplasts in three types of cells in a leaf?

• A

• B

• C

• D

The diagram shows part of a leaf cross-section.Which cells can carry out photosynthesis?

• 1, 2 and 3

• 2, 3 and 4

• 2, 4 and 5

• 1, 3 and 5

Which substance is used up in photosynthesis?

• oxygen

• water

• light

• chlorophyll

Photosynthesis occurred in both test-tube P and test-tube Q.Both test-tubes were kept at the same temperature. The number of bubbles produced in test-tube P was 12 bubbles per minute.What is the most likely number of bubbles produced in one minute in test-tube Q?

• 48

• 12

• 3

• 0

The diagram shows a plant cell. Which type of cell is shown?

• spongy mesophyll cell

• palisade mesophyll cell

• epidermal cell

• cuticle cell

The diagram shows the structure of cells from the leaf of a plant.

What type of cells are they?

• spongy cells

• palisade cells

• epidermal cells

• guard cells

Which region in the leaf of a green plant contains phloem?

• vascular bundle

• upper epidermis

• spongy mesophyll

• palisade mesophyll