Horticulture Fall Final Review

Front

What structures control the passage of H2O out of a plant and CO2 into a plant?

Back

Stomata and guard cells.

Front

Which structure is most likely not functioning properly if a plant's leaves are drooping and appear dehydrated?

Back

Xylem.

Front

What does the term 'organelle' refer to?

Back

A specialized structure within a cell that performs a specific function.

Front

What is adhesion in water?

Back

The tendency of water molecules to stick to other substances.

Front

What happens to enzymes at very high temperatures?

Back

They lose their shape and stop functioning.

Front

What is the function of xylem in plants?

Back

Xylem transports water and minerals from the roots to the rest of the plant.

Front

What role do guard cells play in plant physiology?

Back

Guard cells regulate the opening and closing of stomata to control gas exchange.

Front

Define photosynthesis.

Back

Photosynthesis is the process by which green plants use sunlight to synthesize foods with the help of chlorophyll.

Front

What is the primary function of phloem?

Back

Phloem transports sugars and nutrients produced by photosynthesis throughout the plant.

Front

Explain the process of transpiration in plants.

Back

Transpiration is the process of water vapor loss from plant leaves through stomata.