Turgor Pressure and Tropisms

Which plant would be stiff and rigid?

• A

• B

Which plant would be wilted or limp?

• A

• B

You put a plant on a table near a window and notice that when you come home at the end of the day the plant has bent towards the window. What is this an example of?

• Geotropism

• Sonotropism

• Phototropism

• Thigmotropism

Plants curling around a pole or mailbox is an example of:

• Phototropism

• Germination

• Turgor pressure

• Thigmotropism

Wilting is a plant's response to:

• High turgor pressure

• Low turgor pressure

• Gravity

• Sunlight

Turgor pressure is a result of water in what plant cell organelle?

• Mitochondrion

• Nucleus

• Cell wall

• Vacuole

What is the force inside the central vacuole called?

• The Force

• Turgor Pressure

• Water Pressure

• Thigmotropism

If a plant is going towards water it is showing

• Positive hydrotropism

• Positive Geotropism

• Negative hydrotropism

• Positive Solar Radiation

Which of the following is an example of a plant responding to the stimulus of gravity?

• A seedling growing towards a sunny window

• Plant roots growing down into the soil

• Flowers producing nectar to attract bees

• A potted plant wilting when it dries out

The illustration shows a plant cell after one week without water. Which of the following describes the plant’s response as a result of the stimuli of the lack of water?

• Lack of water causes plant cells to expand.

• Lack of water causes plant cells to have turgidity.

• Lack of water causes plants to lose turgor pressure resulting to wilting

• Lack of water causes turgor pressure to increase resulting to shrinking of the plant cells.