Revision of grade 8

Two examples of diffusion in plants

2 Example of active transport in animals

Define transpiration

why does temperature increases the transpiration rate

Translocation is ...

Xylem vessel is a

• cell

• organ

• tissue

• organ system

Bacterial cells and plant cells have

• Cell wall

• Cytoplasm

• flagella

• nucleus

what reagent is used to test for the presence of vitamin C

• Iodine solution

• DCPIP solution

• Biuret solution

• Ethanol

The diagram shows a sample of material taken from an organism.Which level of organisation does the sample show?

• Cell

• Organ

• Organ system

• Tissue

The diagram represents two liquids, separated by a membrane through which osmosis can occur. Which statement describes how the molecules will move?

• A Molecules of dissolved substance move from left to right.

• B Molecules of dissolved substance move from right to left.

• C Overall, water molecules move from left to right.

• D Overall, water molecules move from right to left