9-1 Plant tissues

Which feature of leaves provides some protection and acts as water proof layer?

• Palisade mesophyll

• Waxy cuticle

• Spongy mesophyll

• Lower epidermis

Which structures are the site of photosynthesis in palisade mesophyll cells?

• Mitochondria

• Nucleus

• Chloroplasts

• Ribosomes

What are the tiny pores in the surface of leaves that allow for gas exchange?

Which process involves the transport of sugars in phloem tubes?

• Transpiration

• Translocation

• Diffusion

• Osmosis

State the term for the vessels in plants that transport water

Identify the process used by roots to absorb water

• Diffusion

• Active transport

• Transpiration

• Osmosis

In which direction does the phloem transport dissolved sugars?

• Upwards only

• In both directions

• Downwards only

• Upwards in the xylem and downwards in the phloem

Which of the following is an adaptation for the absorption of light

• Leaves with a large surface area

• Increased number of stomata

• Long roots

• Many xylem vessels

What process involes the loss of water vapour from leaves?

• Osmosis

• Transpiration

• Active transport

• Translocation

Identify the feature that provides a short distance for carbon dioxide to diffuse into leaf cells

• Thin leaves

• Leaves with hairs

• Leaves with a large surface area

• Leaves with few stomata