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Science 7
Unit 2: Growing Our Future
(Plants for Food & Fibre)
Topic 2 Review: Plant Structures & Adaptations
1. a) Explain the different functions of roots of a plant using a diagram.
b) i) By what process do nutrients move into the roots?
ii) By what process does water move into the roots?
c) Why do nutrients and water move into the roots?
2. a) Use a Venn diagram to compare and contrast a taproot and a fibrous root in
terms of their structure.
b) Use a Venn diagram to compare and contrast a taproot and a fibrous root in
terms of the environment to which they are suited.
3. While gardening, Mike accidently damages the stem of a plant in his garden.
a) What plant process(es) has he directly affected?
b) How might this damage affect the plant?
4. A stalk of celery without roots is placed in a jar of coloured
water and left overnight. The next morning, the celery shows
tubes of colour within the stalk.
a) What structure did the water use to move up the stem?
b) Why did the water move up the stem? Explain how this happened. (Hint:
think about processes).
5. Identify what type(s) of stem would be beneficial in each of the following
environments. Explain your choice.
a) Tropical rainforest with many tall plants
b) Ecosystem where nutrients are scare and winters are long
(continued)
c) Desert
d) Windy slope of a mountain
e) Ecosystem with a lot of herbivores
6. a) What is the function of chlorophyll?
b) Although leaves are generally thin, most of the chlorophyll is located near
the top of the leaf. What is the advantage of having most of the chlorophyll
near the top of the leaf?
c) What is the role of stomata in photosynthesis?
7. Explain the advantage of each type of leaf adaptation.
a) broad leaf
b) needle
8. Flowers and cones both function in the reproduction of plants. Why do some
plants use flowers while other plants use cones for the same function?
9. Adaptations are important for a plant’s survival in different environments. For
each condition described below, explain how the parts of a plant’s structure
(roots, stem, leaves, flowers) might be adapted to enable it to survive.
a) A hot, desert environment where the majority of the moisture is found very
deep in the soil.
b) A tropical rainforest where the moisture and nutrients are readily available.
c) A coniferous forest in the Rocky Mountains where the climate is very cold in
the winter, moisture is plentiful, and the soil is poor and rocky.