$CATEGORY: Science - Khan Academy/7.Control and Coordination/7.Control and Coordination--Coordination in Plants

//Multiple Choice

What is tropism? {
    ~A rapid movement in plants
    =A growth movement in response to a stimulus
    ~A movement towards light
    ~A plant’s ability to photosynthesize
}

What is the term for growth towards a stimulus? {
    ~Negative tropism
    =Positive tropism
    ~Neutral tropism
    ~Random growth
}

Which type of tropism involves a plant's growth in response to gravity? {
    ~Phototropism
    =Geotropism
    ~Hydrotropism
    ~Thigmotropism
}

What type of tropism causes roots to grow towards water? {
    ~Phototropism
    ~Chemotropism
    =Hydrotropism
    ~Thigmotropism
}

Which is an example of negative phototropism? {
    ~Stem growing towards light
    =Root growing away from light
    ~Leaf curling away from heat
    ~Flower opening towards the sun
}

//True or False

Tropism is a directional growth response to stimuli. {T}

Negative tropism refers to growth towards a stimulus. {F}

Hydrotropism is the movement of plants in response to water. {T}

Shoots exhibit negative geotropism by growing against gravity. {T}

Phototropism only occurs in plant roots. {F}

//Fill in the blanks

The growth movement of a plant towards light is called __________. {
    =Phototropism
    ~Geotropism
    ~Hydrotropism
}

Roots exhibit __________ geotropism by growing towards gravity. {
    =Positive
    ~Negative
    ~Neutral
}

Shoots exhibit __________ phototropism by growing towards light. {
    =Positive
    ~Negative
    ~Neutral
}

The movement of plant parts towards or away from water is called __________. {
    ~Geotropism
    =Hydrotropism
    ~Thigmotropism
}

The coiling of tendrils around a support is an example of __________. {
    =Thigmotropism
    ~Hydrotropism
    ~Phototropism
}

//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Phototropism -> Growth towards light
=Geotropism -> Growth in response to gravity
=Hydrotropism -> Growth towards water
=Thigmotropism -> Growth in response to touch
=Positive Tropism -> Growth towards a stimulus
}


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