Plants Responses and Adaptations

Plants Responses and Adaptations

Chapter 2 Lesson 7 page A78

Objectives

• Explore how seed roots grow

• Identify tropisms

• Identify various adaptations plants have for survival

Vocabulary

• Response

• Stimulus

• Tropism

• Adaptation

Get Ready

What happens when you jump up? Why don't you just fly up and away from Earth's surface? There is a pull between Earth and everything on it. This pull is called gravity. Does gravity affect how a plant grows? Do a plant's roots, stems, and leaves grow downward? What is happening to this tree as it grows on the side of the hill? Do roots always grow "down" no matter how you plant a seed.

Fill in the Blanks

Do roots display a positive or negative phototropism?

Open Ended

Do you think leaves would have a positive or negative phototropism? Why?

Open Ended

What is an example of a positive tropism and a negative tropism?

Open Ended

What adaptations help plants survive water shortages?

Open Ended

How do plants plants compete with each other?

Open Ended

What are two ways that pants use chemicals to survive?

Open Ended

What are tropisms? Give an example of one

Fill in the Blanks

Where does a cactus store water?

Fill in the Blanks

How do auxins help plants grow toward the light?

Fill in the Blanks

Compare the way vines and trees compete for sunlight.

Multiple Choice

What do you think might happen if all plants bloomed at the same time?

• They would all die

• They would compete for food and water

• There would be competition for nutrients, water, sunlight, and pollinators at the same time.

• It would work out just fine.

Poll

How did you like doing the lesson this way?

• it was okay I really don't want to do it anyway.

• I love it

• I prefer peardeck

• I'm like either