Unit 3 Plant Systems & Functions

something that causes a response is called a

• response

• stimulus

• touch

• survival

What type of stimuli originate in the environment around an organism?

• external

• internal

Tags

NGSS.MS-LS1-8

How an organism reacts to internal or external stimuli...

• geotropism

• homeostasis

• response

• photosynthesis

When roots of a plant grow downward in response to the stimulus of gravity it is called...

• phototropism

• geotropism

• thigmotropism

• homeostasis

when an organism is attracted to a stimulus it is called

• positive response

• negative response

• ignored

Tags

NGSS.MS-LS1-8

When an organisms response is to avoid a stimulus it is...

• positive

• negative

• ignored

Dormancy

• object, substance or event that causes a specific response in an organism or part of an organism

• come from factors found in the environment

• an organism's reaction to a stimulus

• a period in which a plant does not grow, awaiting necessary environmental conditions such as temperature, moisture, nutrient availability, etc.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Tropism

• the growth or movement of an organism to or away from such an external stimulus as light, heat, or gravity

• come from factors found in the environment

• an organism's reaction to a stimulus

• object, substance or event that causes a specific response in an organism or part of an organism

Tags

NGSS.MS-LS1-5

A push or a pull.

• work

• force

• motion

• energy

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A process that controls or changes the system

• feedback mechanism

• pattern

• model

• output