Unit 3

Match it! Select the correct answer from the pull down...Good luck!

Responses in plants that result in movement away from or toward a stimulus are called —

What process causes a plant to wilt in response to too much or too little water?

On leaf surfaces, guard cells that open and close in response to the amount of water available is an example of—

photo mean

What purpose does the xylem in a plant serve?

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 . Which of the following best explains the student’s observations?

geo mean

In a germinating seed, the downward growth of roots and upward growth of leaves and stems are the plant's responses to —