Photosynthesis Quick Check

In the chloroplast, a special material called __________ traps the sun’s energy.

• stomata

• chlorophyll

• molecule

• hydrogen

Which of the following are the correct reactants in the photosynthesis process?

• carbon dioxide, oxygen, radiant energy

• glucose, carbon dioxide, water

• radiant energy, water, carbon dioxide

• water, chlorophyll, radiant energy

Which of the following are the correct products in the photosynthesis process?

• glucose and chlorophyll

• oxygen and chlorophyll

• water and radiant energy

• glucose and oxygen

Water lilies do not grow in water that is more than 6 feet deep. What can be a reason for this?

• The water lily will get too much sunlight in deep water.

• The roots of the water lily will not be able to take in nutrients.

• The water lily will be eaten by big fish living in deep water.

• The leaves of the water lily will not reach the surface of the pond to receive sunlight.

Which statement best describes the process used by seaweed to obtain food in an ocean ecosystem?

• Seaweed uses photosynthesis to produce its own food.

• Seaweed consumes other ocean producers for food.

• Seaweed absorbs nutrients from decaying organisms for food.

• Seaweed uses energy from consumers for food.

A student placed a green plant on a window sill and another similar green plant in a room without windows. He labeled the plant placed on the window sill as plant A and the plant inside the room without windows as plant B. After 48 hours, plant A remained green, but plant B appeared brown. What resource did plant A receive that plant B did not?

• air

• soil

• sunlight

• water

A student places three potted plants (1, 2, and 3) under a big oak tree and one potted plant (4) in sunlight, as shown. After several weeks, the student observes that the plants in pots 1, 2, and 3 have yellow leaves and poor growth. The plant in pot 4 has green leaves and good growth. What best explains the difference between pots 1-3 and 4?

• poor soil

• low temperature

• less sunlight

• extra water

The equation shows the process of photosynthesis. What is “X” in the equation?

• nitrogen

• salt

• sugar

• water

Examine the diagram of photosynthesis. Which statement is true?

• Only water reacts with sunlight to make sugar.

• Only carbon dioxide gas combines with sunlight to make sugar.

• Carbon dioxide gas enters the leaf and releases oxygen gas and light.

• Carbon dioxide gas and water combine in the presence of light energy to form sugar.

A researcher plants two daisy plants (P and Q) that are 5 cm in height in similar pots. The researcher places each plant in two different cardboard boxes of the same size, one with a light bulb and the other without a light. The image shows the setup of the experiment. After a week, the researcher records the change in height for each plant in a table. What can be inferred about daisy plants from the data?

• Daisy plants do not require light for growth.

• Daisy plants grow well in cardboard boxes.

• Light from the bulb did not help plant Q grow.

• Light is needed in order for daisy plants to perform photosynthesis.