Photosynthesis test

Where does photosynthesis happen?

• Stem

• Roots

• Leaves

• Flower

The job of the stomata is to -

• allow the exchange of gases carbon dioxide and oxygen.

• allow the exchange of water and nutrients.

• bring water and nutrients from the roots to the leaves.

• bring glucose from the leaves to the rest of the plant.

Why does a plant make glucose during photosynthesis?

• to use it as bait to attract bees to pollinate the plant

• to use it as energy for itself

• to use it as thermal energy to

• to use it as biofuel for cars

If the sunlight gets more intense, what would happen to the rate of photosynthesis?

• it would increase

• it would decrease

• it would stay the same

A plant is put inside a clear, sealed container. Water is put into the container for the plant. The container is placed in the sun and the plant’s growth is measured. What is going to happen to the plant over time?

• a. The plant will grow faster because it is sheltered from the wind.

• b. The plant will die because it does not have oxygen for photosynthesis.

• c. The plant will die because it does not have carbon dioxide for photosynthesis

• d. The plant will grow at a slower rate because it requires more water.

Most plants appear green because

• chlorophyll is green

• mitochondria is green

• water turns them green

• cell walls react with water to turn green

When the water availability of a plant's environment decreases, the plant can respond by closing its stomata. This reduces the amount of water that the plant loses through its leaves due to transpiration. Closing the stomata also reduces the amount of carbon dioxide that the plant can take in through its leaves, which will most likely result in

• No change in the cellular process of the plant

• An increased rate of photosynthesis

• An increased rate of cellular respiration

• A decreased rate of photosynthesis

What is the ultimate form of energy on Earth?

• glucose

• water

• the sun

• carbon dioxide

•The organelle responsible for photosynthesis:

• Vacuole

• Chloroplast

• nuclear membrane

• mitochondria

• Cytoplasm

What are the raw materials of photosynthesis?

• oxygen and carbon dioxide
• oxygen and glucose
• carbon dioxide and water
• water and glucose