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Science

How Flowers Reproduce

Overview

Students dissect a flower and identify its reproductive parts, then trace the journey from pollen grain to seed.

Learning Objective
Students understand the process of pollination and fertilisation in flowering plants and can identify the male and female parts of a flower.

Resources needed

  • One flower per group — any large accessible flower
  • OR a detailed diagram of a flower

Lesson stages

0 / 7 done
  1. 1 Give each group a flower to examine.
  2. 2 Identify the parts: petals, stamens (male — produce pollen), pistil (female — receives pollen), ovary.
  3. 3 Touch the stamen — show the yellow pollen dust.
  4. 4 Explain pollination: pollen must travel from stamen to pistil (of the same or another flower).
  5. 5 Ask: how does pollen travel? (Wind, insects, water, birds).
  6. 6 Explain fertilisation: pollen fuses with the egg in the ovary, forming a seed.
  7. 7 Ask: what does the ovary become after fertilisation? (The fruit — which protects and disperses the seed).

Tap a step to mark it as done.

Variations

  • Compare wind-pollinated and insect-pollinated flowers — how do they differ?
  • Simulate pollination with a cotton bud and two flowers.
  • Grow a plant from a seed and observe the flower forming — the complete reproductive cycle.
More information

Teach: stamen, pistil, pollen, pollination, fertilisation, ovary, fruit, seed. The male/female analogy — stamen produces pollen (male), pistil receives pollen (female) — is the clearest framework.

Focus on pollination only before introducing fertilisation.

Can students identify the stamen and pistil and explain the role of each? Can they trace the journey from pollen grain to seed in the correct sequence?

Any accessible flower from the environment works. Observe actual bees collecting pollen outdoors.

Students often think insects deliberately help plants reproduce as a cooperative act. Insects visit flowers for nectar — pollination is a consequence, not a deliberate service.

Flower reproduction demonstrates mutualistic relationships between plants and pollinators. Understanding it builds appreciation for biodiversity — the loss of pollinators threatens food production worldwide.

Activity details
Primary Medium 25 minutes 5 minutes prep Small Group, Whole Class Outdoor
Topics
Plant Reproduction Pollination Flowers