Photosynthesis

In photosynthesis, water molecules are split into ___ and ___ atoms.

• hydrogen and oxygen

• sulfur and lithium

• carbon and nitrogen

• glucose and fructose

Chlorophyll traps energy from sunlight and stores it as what kind of energy?

• Kinetic energy

• Heat energy

• Color energy

• Chemical energy

If you were looking for a plant's chloroplasts, where would you find them?

• In its fruit

• In its xylem

• In its roots

• In its palisade and spongy cells

Which part of the human body is most similar to stomata in plants?

• The heart

• The brain

• The lungs and airways

• The fingers and toes

Which of the following depicts xylem?

• 
• 
• 
• 

What is the main function of the xylem within a plant?

• It keeps the leaves green.

• It enables the plant to absorb sunlight.

• It turns energy into glucose.

• It transports water and nutrients from the roots to the leaves.

What might happen if plants could not produce glucose?

• They would not be green.

• They could not grow and function.

• They could not absorb energy from the sun.

• They would not have leaves.

In what way does plant nutrition differ from human nutrition? Choose the best answer.

• Plants make their own nutrients, humans must consume theirs.

• Plant nutrition consists mainly of protein. Human nutrition consists mainly of carbohydrates.

• Plants absorb their nutrients from the soil; humans get theirs from food.

• Plants cannot make their own food. Humans can.

Which of the following do plants gain from sunlight?

• Carbon dioxide

• Energy

• Sugar

• Water

In which phase of life is this dandelion clock in?

• budding

• blooming

• seeding (puffball)

• germinating