Plant Responses Answers

Look at the image of a plant.

The diagram shows a bean plant growing in soil.

Which statements describe hormones in plants? Select three options.Cutting stems can stimulate hormones to start lateral leaf growth. Some tropisms are controlled by hormones. Cells grow faster in areas where auxin is concentrated.Hormones help buds form and grow in the winter. Auxin is the only hormone involved in plant development.

Sandra has a houseplant sitting on her kitchen windowsill, where it receives a lot of sunlight.What will most likely be the plant’s pattern of growth?

Which statements describe hydrotropism? Check all that apply. Hydrotropism is a plant’s response to light.Hydrotropism is a plant’s response to an external stimulus.Hydrotropism causes cells to grow longer on one side of the roots.Hydrotropism causes cells to grow longer on one side of the stems.Hydrotropism causes a plant to grow toward light.Hydrotropism causes a plant to grow away from light.

As a tree goes into dormancy, its leaves change color.What causes this change in color?

Students did an experiment. They grew four bean plants, each 6 inches tall, in square pots. Then they put the pots on their sides at the edge of a table. The students made some observations.Which experimental question were the students most likely trying to answer?

Which statements describe thigmotropism? Select five options.Thigmotropism is a plant’s response to touch.Thigmotropism is a plant’s response to an external stimulus.Thigmotropism occurs only slowly.Thigmotropism can occur quickly or slowly.Thigmotropism may involve the way in which a plant grows.Thigmotropism may involve the closing and opening of plant leaves.

Which best describes the role of auxin?

Photoperiodism is a plant’s response to which stimulus?