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Plant Processes

Test Description: Plant processes

Instructions: Answer all questions to get your test result.

1) Most carbon dioxide enters plants through stomata on the

Aupper surface of leaves Broot tips Clower surface of leaves Dtips of the stems

2) ____________ causes fruit to ripen

Aethylene gas Bchlorophyll Cgravity Dauxin

3) Light energy for the plant to use in making its food is trapped by

Apigments Bauxin Cwater Dchlorophyll

4) The plant hormone that causes stomata to close and helps plants respond to water loss is

Acytokinin Bauxin Cabscisic acid Dgibberellin

5) Plants that require short nights to flower are called ____________ plants

Ashort-day Blong-day Cday-neutral Dperiodic

6) Light, _____________, and carbon dioxide all affect the opening and closing of stomata.

Awater Binsects Cgravity Dminerals

7) The autumn colors of tree leaves are due to _____________ in the leaves.

Achlorophyll Bauxin Cpigments Dcarbon dioxide

8) The type of growth response having to do with light is called_________

Aphotoperiodism Bphotosynthesis Cphototropism Dgravitropism

9) Which of the following describes the function of the chloroplast in plant cells?

AIt regulates water content. BIt stores starches. CIt helps in reproduction. DIt traps energy from sunlight.

10) What does the outer layer of the leaf do.

AIt transports water from the roots to the leaves. BIt opens and closes the stomata CIt slows the loss of water. DIt allows carbon dioxide, water, and oxygen to exit the cell.

*select an answer for all questions

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