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Biology · Grades 1–4

Roots, stems, leaves and flowers

Connect common plant structures with their roles.

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Learn the idea

Roots

Roots commonly anchor a plant and absorb water and mineral nutrients.

Stem

A stem supports structures and contains transport tissues.

Leaves

Leaves are important sites of photosynthesis in many plants.

Diversity

Plants vary; some structures are modified, and not every plant has flowers.

Worked examples

Which structure commonly absorbs water from soil?

Roots, including root hairs, help absorb water and mineral nutrients.

Roots.

Which structure commonly supports leaves above the ground?

The stem supports and connects plant structures.

A stem.

Check your understanding

  1. Which plant structure is an important photosynthesis site in many plants?

    1. Leaves.
    2. Only the flower's pollen.
    3. Only dry bark.

  2. Why should a learner avoid saying that all plants have flowers?

  3. A drawing shows 4 stems, each with 3 leaves. How many leaves are shown?

Answers and marking notes

Answers and marking notes
  1. Leaves.

    Leaves contain photosynthetic tissues in many plants.

  2. Some plants, such as ferns, reproduce without flowers.

    A valid nonflowering example is sufficient.

  3. 12

    4 × 3 = 12 in the stated drawing.

Further reading and review references

These are reference links, not copied exercises, institutional endorsement or proof of independent review.

Independent educational review required. Grade bands are approximate; these are not officially aligned curricula.