$CATEGORY: Science - Khan Academy/6.Life Processes/6.Life Processes--Transportation

//Multiple Choice

What is the main function of phloem in plants? {
    ~Transport of water
    =Transport of sugars and nutrients
    ~Absorption of minerals
    ~Protection against pathogens
}

Translocation in phloem occurs due to\: {
    =Osmotic pressure gradient
    ~Root pressure
    ~Capillary action
    ~Cohesion and adhesion
}

Which part of the phloem is responsible for the actual transport of food? {
    =Sieve tubes
    ~Xylem vessels
    ~Companion cells
    ~Phloem parenchyma
}

The movement of sugars in the phloem is described as\: {
    ~Passive transport
    =Active transport
    ~Diffusion
    ~None of the above
}

Phloem transport is a bidirectional process because\: {
    =Sugars move to growing and storage parts
    ~Water is absorbed in both directions
    ~Nutrients move randomly
    ~It depends on root pressure
}

//True or False

Phloem is responsible for the transport of water in plants. {F}

Translocation is an energy-requiring process. {T}

Phloem transport is unidirectional. {F}

Sieve tubes and companion cells work together for the transport of food. {T}

Translocation occurs only during daytime. {F}

//Fill in the blanks

Phloem primarily transports __________. {
    =Nutrients and sugars
    ~Water
    ~Minerals
}

The movement of food in plants through the phloem is called __________. {
    =Translocation
    ~Transpiration
    ~Photosynthesis
}

Companion cells are associated with __________. {
    =Sieve tubes
    ~Xylem vessels
    ~Phloem fibers
}

The energy required for translocation in the phloem comes from __________. {
    =ATP
    ~Water
    ~Glucose
}

Phloem consists of sieve tubes, companion cells, phloem fibers, and __________. {
    =Phloem parenchyma
    ~Xylem vessels
    ~Tracheids
}


//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Phloem -> Conducting elements of phloem
=Sieve tubes -> Transport of food
=Companion cells -> Provide energy for translocation
=Translocation -> Movement of food in plants
=Bidirectional transport -> Transport of sugars in phloem
}


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