Plant Needs
What are the four things all plants need to survive and grow?
Sunlight, air (carbon dioxide), water, and soil
Which gas do plants need most from the air?
Carbon dioxide
What is photosynthesis?
The process plants use to make their own food using sunlight
How does water help plants besides being used in photosynthesis?
It carries nutrients from the soil to the leaves
Which plant need provides energy?
Sunlight
What are the tiny openings on the underside of leaves called?
Stomata
What three things are needed for photosynthesis to happen?
Sunlight, water, and carbon dioxide
Why is soil helpful to plants? (Give one reason.)
It holds water, anchors roots, or provides minerals
Which plant need is taken in through the roots?
Water
Why are stomata important for plants?
They let carbon dioxide enter the leaf
What food do plants make during photosynthesis?
Glucose (sugar)
Can plants grow without soil? Explain how.
Yes—plants can grow in water with air and sunlight (hydroponics)
Which plant need comes from the air?
Air
What gas do plants take in during photosynthesis?
Carbon dioxide
Why is glucose important to a plant?
It gives the plant energy and helps it grow/build its body
What experiment showed that plants do not get most of their mass from soil?
Jan van Helmont’s willow tree experiment
What happens to a plant if it does not get enough sunlight?
It grows pale, weak, or cannot make food
What gas do plants release during photosynthesis?
Oxygen
How is photosynthesis like building with Lego bricks?
Plants use air and water like building blocks, and sunlight provides the energy to build
Where does most of a plant’s body actually come from?
From air (carbon dioxide) and water