Download grade 8I LS topic task

Topic task: 1
Date: …………………….
Learner’s Name: …………………………………………..
Grade:
Topic 4: Passage of substances
1. Define the term diffusion
(2)
…………………………………………………………………………………………………………………………………………………………………
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2. Discuss how diffusion is important to living organisms (plants and animals)
(2)
Plants…………………………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………………………………
Animals……………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………………………..
3. Osmosis is the passage or movement of ……………………………………………………………from the region of
their higher water potential to a region of their lower potential,
through………………………………………………………………………………............................................................. (2)
4. Discuss the significance of osmosis to plants
(1)
……………………………………………………………………………………………………………………………………………………………….
5. Active transport is the movement of……………………………………………………………..from a region of their
……………………………………………………....to a region of their
…………………………………………………………………………………against a concentration gradient
(3)
Total marks: 10