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Grade 7 · Science · Unit 6 of 10

How Plants Work

Roots, leaves, flowers and photosynthesis

What your child practises

The parts of seed plants and what they do, photosynthesis, gas exchange, transpiration and pollination, and how plant structures suit where a plant grows.

Nunavut Curriculum approved guide: Nunavut adaptation of Alberta Science 7–9 (2003), Unit B: Plants for Food and Fibre · the structure and life processes of seed plants and how they suit their environment

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Which plant is best suited to a very dry, windy field?

    • One that needs flooded soil
    • One with wide, thin leaves and shallow roots
    • One with deep taproots and narrow leaves
    • One that needs shade all day

  2. Question 2

    A dandelion has one thick, deep root that goes straight down. What kind of root is this?

    • A stem root
    • A flower root
    • A taproot
    • A fibrous root

  3. Question 3

    Which tubes in a stem carry water up from the roots?

    • Petals
    • Stomata
    • Xylem
    • Phloem

  4. Question 4

    On a hot, dry day, many plants close their stomata. What does this do?

    • Makes more roots grow
    • Speeds up photosynthesis
    • Lets more pollen in
    • Saves water, but slows photosynthesis

  5. Question 5

    What is the job of tiny root hairs?

    • To catch sunlight
    • To attract insects
    • To take in water and minerals from the soil
    • To make seeds

  6. Question 6

    What happens during pollination?

    • A seed grows into a seedling
    • Roots take in water
    • Pollen is moved to the female part of a flower
    • Leaves make sugar

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