Plant Response & Growth

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react

Another word for respond is _____.

photoperiodism

Deciduous plants dropping their leaves in the fall season is an example of _____.

heliotropism

Desert plants leaves moving away from the Sun to conserve water is an example of negative _____.

stimulus

In the picture, #1 shows the _____. (stimulus or response)

response

In the picture, #2 shows the _____. (stimulus or response)

respond

Like all living things, plants must be able to _____ to their environment to survive.

growth, seed sprouting, leaf growth/fall, budding, flowering, fruiting

List some plant processes (responses) that are controlled by hormones.

make food

One very important purpose of plant leaves is to _____.

transport materials

One very important purpose of plant stems is to _____.

absorb water

One very important purpose of the root system is to _____.

seasons

Photoperiodism allows plants to respond to different _____, which have different average temperatures.

movement

Responses are usually some type of _____.

thigmotropism

Roots moving away from underground, solid objects (such as rocks) is an example of negative _____.

light. water, gravity, temperature, touching objects

Some examples of plant stimuli are:

thigmotropism

Tendrils on vines moving towards (often coiling around) solid objects as the plant climbs is an example of positive _____.

Earth

The prefix geo- means _____.

Sun

The prefix helio- means _____.

water

The prefix hydro- means _____.

light

The prefix photo- means _____.

heat

The prefix thermo- means _____.

touch

The prefix thigmo- mean _____.

root, shoot

The two basic organ systems of a plant are the _____ system and the _____ system. (Botttom -> Up)

survival

Tropisms have evolved in plants to help them get the resources/materials that they need for their _____.

geotropism

What type of tropism is shown?

hydrotropism

What type of tropism is shown?

phototropism

What type of tropism is shown?

heliotropism

Young sunflower "heads" moving to stay pointed at the Sun as it moves across the sky each day is an example of positive _____.

dormancy

_____ is a period of a plant's life where growth and and other life processes slow down or stop - think plant "hibernation."

stimulus

A _____ is a change in a plant's environment that causes a change in the plant's behavior or activity. (Think CAUSE!)

tropism

A _____ is plant movement/growth toward or away from a stimulus.

negative

A _____ response stimuli will cause a plant to grow away from the stimuli.

positive

A _____ response will cause a plant to grow towards the stimuli.

nervous

A plant's system of receptors and hormones is most like the _____ system in humans.

winter

For many plants in our biome, _____ is the season of dormancy.

gravitropism

Geotropism is also called _____.

thermotropism

Plant leaves drooping during cold weather is an example of _____.

geotropism

Plant movement/growth in response to gravity is called _____.

phototropism

Plant movement/growth in response to light is called _____.

heliotropism

Plant movement/growth in response to the Sun is called _____.

thigmotropism

Plant movement/growth in response to touching a solid object is called _____.

hydrotropism

Plant movement/growth in response to waer is called _____.

geotropism

Plant root movement/growth towards gravity is an example of positive _____.

phototropism

Plant roots movement/growth away from light is an example of negative _____.

hydrotropism

Plant roots movement/growth towards water is an example of positive _____.

stems, leaves

Plant shoot systems consist of _____ and _____.

geotropism

Plant stem movement/growth away from gravity is example of negative _____.

thigmotropism

Plant stems movement/growth away from an solid object (like a wall) are an example of negative _____.

phototropism

Plant stems movement/growth towards more light is an example of positive _____.

false

Plants are able to detect water over several feet away. (true or false)

true

Plants can collect information about their environment and adapt their behavior and growth (true or false)

true

Plants have a sense of touch that can be more sensitive than a human's sense of touch. (true or false)

photosynthesis

Plants have evolved to respond to light because light is required for _____, which is the process plants use to make their food.

response

Plants reaction to a stimuli is called a _____. (Think EFFECT!)

receptors

Plants use _____ to sense their environment.

energy

Plants use dormancy to conserve _____ in response to environmental conditions (like season's of freezing temperatures or seasons of drought).

photoperiodism

Plants use receptors to sense the length of day and/or night; this is called _____.

hormones

Plants use signaling chemicals, called _____, to control their growth.


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