Plants Parts and Needs — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Plants need water from clouds or watering cans.
Plants soak up water through their roots so they can grow and stay healthy.
2. Without sunlight, leaves cannot make food.
Leaves use sunlight as energy to mix water and air into plant food.
3. A plant left in the dark may turn yellow.
Without sunlight, leaves lose their bright green color and slowly turn pale yellow.
4. If you forget to water a plant, the leaves may droop.
Plants droop when there is not enough water to keep their leaves stiff and straight.
5. Roots get water and food from the soil.
Soil holds water and tiny bits of food that roots pull in for the plant.
6. Plants take in air through tiny holes in leaves.
Tiny holes on leaves let plants take in air, which they need to make food.
7. A small new plant just out of a seed is a seedling.
A seedling is a young plant with its first leaves, growing bigger each day.
8. Trees grow from very small seeds.
Even huge trees start as tiny seeds that sprout, then grow taller each year.
9. If a plant gets too much water, the roots may rot.
Too much water keeps roots too wet, so they get soft and stop working well.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Water
→ Travels from roots up the stem
Travels from roots up the stem
Sunlight
→ Gives leaves energy to make food
Gives leaves energy to make food
Soil
→ Holds roots and gives them food
Holds roots and gives them food
Air
→ Comes in through tiny leaf holes
Comes in through tiny leaf holes
Plants need water, sunlight, soil, and air, and each one helps the plant in a different way.