Adaptations of a leaf

In the diagram, label A is pointing to the waxy cuticle. The waxy cuticle . . .

• blocks sunlight, preventing damage to the leaf cells.

• reduces water loss from the surface of the leaf.

• contains stomata and guard cells

In the diagram, label B is pointing to the upper epidermis. The upper epidermis . . .

• contains a large number of chloroplasts that carry out photosynthesis.

• is a layer of transparent cells that allows light to pass through to the palisade cells.

• consists of both epidermal and guard cells.

In the diagram, label C is pointing to the palisade cells. Palisade cells . . .

Select two options.

• have air spaces between them that allow gases to diffuse through the leaf.

• are situated at the top of the leaf so that they can absorb as much light as possible.

• contain a large number of chloroplasts, which carry out the photosynthesis reaction.

• are a layer of transparent cells that light can pass through.

In the diagram, label D is pointing to a spongy cell. Spongy cells . .

• have air spaces between them that gases can diffuse through.

• are situated at the top of the leaf so that they can absorb as much light as possible.

• are transparent cells that allow light to pass through.

In the diagram, label E is pointing to the lower epidermis. The lower epidermis . . .

• has air spaces within it that gases can diffuse through.

• is a layer of transparent cells that light can pass through.

• covers the bottom of the leaf and consists of both epidermal and guard cells.

In the diagram, label F is pointing to a guard cell. Guard cells . . .

• surround stomata, controlling the size of the holes and regulating water loss from the leaf.

• are transparent cells that allow light to pass through.

• are part of the upper epidermis.

In the diagram, label G is pointing to a stoma (plural: stomata). A stoma . .

• consists of two guard cells that control the size of a hole in the lower epidermis.

• is a small hole in the lower epidermis that allows gases to diffuse into and out of a leaf.

• is part of the upper epidermis.

In the diagram, label H is pointing to an air space. An air space is . . . Select two options.

• a gap formed between the cells in a leaf as a result of the irregular shape of spongy cells.

• not important in any cell processes.

• a gap between the cells in a leaf that enables gas exchange between photosynthesising cells and the air.

In the diagram, label I is pointing to a vein. A vein is made up of ________ and _________.

• phloem

• epidermis

• chloroplasts

• xylem

A ________ ________ is a waterproof layer that reduces water loss from the surface of a leaf.

• cuticle

• waxy cuticle

• wazy cuticle

• waterproof layer