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WorksheetsAdvanced Plant Tropism
Total questions: 10
Worksheet time: 5mins
It is the middle of summer in Texas and a lack of rainfall has caused many plants to wilt. What plant cell organelle is responsible for the plant wilting?
Vacuole
Cell Wall
Cell Membrane
Chloroplast
Which of the following is not an example of a plant responding to an external stimulus?
Roots growing down
A plant wilting
A plant turning towards a window
Plant turning when touched
What is most likely to cause wilting in plants?
Loss of water in cells throughout the plant
An increased amount of sunlight exposure
Low nutrient concentration in the soil near the roots
Long exposure to cold external temperatures
What internal stimulus would cause the plant to respond as depicted below?
Exposure of too much sunlight
A lack of water in the stem
An abundance of water in the stem
Exposure to very little sunlight
Students observed a plant left by a window over several days. The plant was watered daily. After three days, the plant began to grow towards the window. Why is the plant growing towards the window?
The plant is responding to water in the air and growing towards it
Heat from the sun is causing the plant to grow towards the window
The plant is responding to the stimulus of sunlight
The plant is leaning towards the window for fresh air
Seeds that are planted upside down are still able to grow into mature plants. Which explanation best explains this phenomenon?
The roots grow toward the force of gravity, and the shoots grow away.
The plant will become a smaller version of a mature plant.
Roots always grow toward the dark, and shoots grow toward the light.
The roots change into branches, and the branches turn into roots.
What must happen for a seed to emerge from the soil as a seedling?
The seed must exert a force to push a shoot up through the soil.
The soil must erode and expose the seed to the sunlight.
An animal searching for food must disrupt the soil.
Another plant must die to make room for the new plant.
Which is the force exerted by turgor pressure to split open the seed coat?
Water within the seed coat pushes out
Gravity pulls the seed coat up
Water from the soil pushes into the seed coat
Gravity pulls the seed coat down
Which part of the plant above demonstrates the least amount of turgor pressure?
A
B
C
D
Which part of the plant above demonstrates the greatest amount of turgor pressure?
A
B
C
D
