🔬 ScienceGrade 2Lesson 2
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Learn Plant Parts and Their Roles

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Learning Objectives

  • 1Name the five main parts of a plant — root, stem, leaf, flower, and seed
  • 2Describe the role each plant part plays
  • 3Explain what photosynthesis means in simple words
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Mini Lesson

Plants can't walk, talk, or eat at a table — but every single part of a plant has an important job that keeps it alive and growing!

Roots — the anchor and drinker

  • Roots grow underground and hold the plant firmly in the soil.
  • They soak up water and nutrients from the soil and send them up the plant.
  • Example: Carrots and beets are roots we can eat.

Stem — the highway

  • The stem supports the plant and holds it upright.
  • It carries water and nutrients from the roots to the leaves and flowers — like a straw.

Leaves — the food factory

  • Leaves capture sunlight and use it — along with water and air — to make food for the plant.
  • This process is called photosynthesis.

Flower and Seed

  • The flower attracts insects that help the plant reproduce.
  • The seed is made inside the flower; it can grow into a brand-new plant.
Labeled plant diagramA simple flowering plant diagram with five labeled parts: roots, stem, leaf, flower, and seed.Parts of a PlantFlowerSeedLeafStemRoots
A labeled flowering plant showing roots, stem, leaf, flower, and seed.
Plant parts and their rolesA table listing each plant part alongside its main job.What does each part do?RootsStemLeafFlowerSeedAbsorb water & nutrientsSupport & carry water upMake food using sunlightAttract insects; reproduceGrow into a new plant
A role table matching each plant part to its main job.
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Ask yourself: Which part drinks water? Which part makes food? Which part makes new plants?

Vocabulary
Root
The underground part of a plant that absorbs water and nutrientse.g. A carrot is a root.
Stem
The part of a plant that supports it and carries water upe.g. The green stem of a sunflower holds the head high.
Leaf
The part of a plant that makes food using sunlighte.g. The wide leaves of a maple tree soak up light.
Flower
The colorful part that attracts insects and makes seedse.g. A rose is a flower.
Seed
A small part made by a flower that can grow into a new plante.g. An apple seed can grow into an apple tree.
Photosynthesis
The process leaves use to make food from sunlight, water, and aire.g. Leaves stay green because of photosynthesis.
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← Lesson 1: Review Characteristics of Living ThingsLesson 3: How Plants Make Food →