Plant Growth and Needs Quiz

Grade 2 · Science · Quiz

Test your knowledge of what plants need to grow and how their parts work together.

Questions

1. Which part of a plant absorbs water from the soil?

   1. Leaves
   2. Flowers
   3. Roots
   4. Seeds
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   Answer: Roots

   Roots grow underground and absorb water and nutrients from the soil, sending them up through the stem to the rest of the plant.

2. What is the main job of a plant's leaves?

   1. To hold the plant in the ground
   2. To capture sunlight for making food
   3. To carry water from the roots
   4. To make seeds
   Show answer

   Answer: To capture sunlight for making food

   Leaves are the main food-making parts of a plant. Their flat shape helps them capture as much sunlight as possible for photosynthesis.

3. Plants need sunlight, water, air, and soil nutrients to grow.

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   Answer: True

   Plants need all four of these things: sunlight for energy, water to carry nutrients, air (carbon dioxide) for photosynthesis, and soil nutrients to build their cells.

4. What gas do plants take in from the air during photosynthesis?

   1. Oxygen
   2. Nitrogen
   3. Carbon dioxide
   4. Steam
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   Answer: Carbon dioxide

   Plants take in carbon dioxide through tiny holes in their leaves called stomata. They use the carbon dioxide along with water and sunlight to make food.

5. What does a seed grow into?

   1. A flower only
   2. A new plant
   3. A root
   4. A leaf
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   Answer: A new plant

   Seeds contain everything needed to start a new plant. When conditions are right, a seed will germinate and grow into a new plant.

6. A plant's stem carries water from the roots to the leaves.

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   Answer: True

   The stem acts like a highway, carrying water and nutrients from the roots up to the leaves and other parts of the plant.

7. What do we call it when a seed first starts to sprout and grow?

   1. Photosynthesis
   2. Pollination
   3. Germination
   4. Evaporation
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   Answer: Germination

   Germination is when a seed absorbs water, sprouts, and begins to grow into a new plant.

8. A plant in a dark closet will most likely:

   1. Grow faster than normal
   2. Stay green and healthy
   3. Grow pale and weak without sunlight
   4. Produce more flowers
   Show answer

   Answer: Grow pale and weak without sunlight

   Without sunlight, a plant cannot make food through photosynthesis. It will grow pale and weak and eventually die without light.

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