Science Notebook - Student Edition

(Steven Felgate) #1

Main Idea Details


234 Plant Structure and Function


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Compare tropism and nastic movement. Place each characteristic
in the correct location in the Venn diagram below.


  • does not involve growth • is reversible

  • involves growth • is not reversible

  • involves plant response • response can be positive or negative


Section 22.3 Plant Hormones and Responses (continued)


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Classify each of the following as an example of tropism or nastic
movement.

Venus flytrap closes on an insect.

Sweet pea tendrils climb a fence.
Plant grows toward a lamp.

Mimosa pudica leaflets become limp when
touched.

Plant roots grow into the soil.

Farmers often use hormones to improve their crop yield. Describe
a hormone that a farmer might use and how the hormone can help increase crop output.

(^) CONNECT
Tropism Nastic
Both Movement

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