7th Grade Science

What happens when a root bends in the direction of the force of gravity?

• The top side grows more than the bottom side

• The bottom side grows more than the top side

• The top and bottom sides grow at the same rate

Which statement about plant stems is correct?

• They are positively phototropic and positively geotropic

• They are negatively phototropic but positively geotropic

• They are positively phototropic but negatively geotropic

Turgor pressure is-

• a force that keeps the plant turning toward the sun.

• is an outward force exerted on the cell wall of a plant cell.

• the cell part that contains chlorophyll and carries out photosynthesis

• is a force that is measured in kilometers.

In which part of the plant cell does turgor pressure occur?

• cytoplasm

• nucleus

• chloroplast

• vacuole

Which plant would be wilted or limp?

• A

• B

What is the tropism where plants response is to grow towards light?

• gravitropism/geotropism

• phototropism

• thigotropism

• none of the above

What is the stimulus in this example?

• Internal

• Light

• Touch

• Temperature

Which plant would be stiff and rigid?

• The plant with the full vacuole in the cell

• The plant with the empty vacuole in the cell

• All plants the water in the vacuole does not matter

Where do plants get the energy for photosynthesis to take place?

• nutrients in the soil

• the sun

• chlorophyll

• bee pollination

What two things are the product (end result) of photosynthesis?

• Oxygen

• Glucose

• Chloroplasts

• Carbon Dioxide