Plant Tropisms

Test Description: Grades 6-8 Life Science

Instructions: Answer all questions to get your test result.

1) A ___ is anything in an organism’s environment that it might react to (~the “cause”).

2) An ___ stimulus is the type of stimulus that comes from inside the organism.

3) An ___ stimulus is the type of stimulus that comes from the organism's surroundings / environment.

4) A ___ is an organism's reaction to a stimulus (~the “effect”).

5) A ___ response is the type of response where the organism moves or grows TOWARDS the stimulus.

6) A ___ response is the type of response where the organism moves or grows AWAY FROM the stimulus.

7) ___ are specialized plant cells that gather information about their surroundings (similar to your eyes ears).

8) ___ are special chemicals made by plants that are used to send messages and control the growth of stems and roots.

9) ___ is the special name for PLANT responses to their environment.

10) ___ is plant movement or growth towards (or away from) LIGHT.

11) ___ is plant movement or growth towards (or away from) GRAVITY.

12) ___ is plant movement or growth towards (or away from) WATER.

13) ___ is plant movement or growth towards (or away from) TOUCHING something.

14) Plant ___ often have a positive response to LIGHT - meaning they grow towards light.

15) Plant ___ often have a positive response to GRAVITY - meaning they grow downwards towards gravity.

16) Plant ___ often have a negative response to GRAVITY - meaning they grow up away from gravity.

17) Plants stems leaves grow towards light because ___.

18) Plant ___ often have a positive response to WATER - meaning they grow towards water.

19) ___ is when plants temporarily stop growing - often to prepare for very cold or very dry seasons.

20) when a plant continually turns to face towards (or away from) the Sun over the day


*select an answer for all questions

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