L.5.3a.2-Photosynthesis-Odd Environments

L.5.3a.2-Photosynthesis-Odd Environments

Multiple Choice

The year after a hurricane knocked down many trees in Mrs. Whitfield's yard, she noticed that her lawn was much greener. What is the most likely reason for this?

• The trees were blocking the sunlight from reaching the grass.

• The trees' leaves were absorbing the rain so the grass got too little moisture.

• The trees created a habitat for insects that were damaging to the grass.

• The trees' leaves covered the grass when they fell in autumn.

Sunlight

Remember Photosynthesis depends on sunlight

If there is more sunlight, there will be more photosynthesis

More photosynthesis- More Chlorophyll or 'green'.

Multiple Choice

Kathleen has a fish tank that has fish, plants, rocks, and water inside. The tank is lit by a light bulb. Kathleen knows that energy is transferred to the fish from their food. What gives the plants their energy?

• fish

• light

• water

• rocks

Light

Light can be natural, from the sun, or artificial, manmade.

Light is from the lightbulb

CO2 is from the fish

Water is surrounding the plant

Multiple Choice

Jessica’s teacher placed a plant in her classroom closet. The teacher watered the plant regularly. After several weeks, the plant died. The most likely reason the plant died is that it did not receive...

• water.

• nutrients.

• fertilizer.

• light.

LIGHT

Remember photosynthesis need light to occur - natural or artificial.

- Some places rely on artificial light to grow plants.

Multiple Choice

The chart shows a plant grown in the shade and a plant grown in direct sunlight.

Why do the leaves of the plant grown in the shade have horizontal growth?

• to reflect excess sunlight

• to save water during low light conditions

• to increase the absorption of sunlight for photosynthesis

• to protect the roots of the plant from direct sunlight