Transport of Materials Mcqs

This Set of Multiple choice questions and answers focuses on study of Transport of Materials in Biology. These questions are chosen from a collection of most authoritative and best reference books on Biology. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Medicine industry job interviews. One should practice our Mcqs to assimilate knowledge on Transport of food and materials in plants and animals comprehensively.

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16.
Exceptionally the positive hydrostatic pressure generated by root pressure is about

600 Kpa

800 Kpa

1000 Kpa

900 Kpa

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20.
Aerating openings formed in the bark through which exchange of gases takes place and water is lost in the form of vapours are

Hydathods

Stomata

Lenticels

None of these

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25.
Stomata open due to _____ of K+ into the guard cells from the surrounding epidermis

Diffusion

Active transport

Osmosis

All of these

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28.
Symbionts which help plants in uptake of phosphorous and trace metals such as zinc and copper.

Bacteria.

Viruses

Fungi.

Cyanobacteria.

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29.
Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called:

Diffusion.

Facilitated diffusion.

Passive transport.

Active transport.

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30.
Pulling upward of water and dissolved minerals towards the leaves through the xylem tissue is called

Transpiration pull

Root pressure

Ascent of sap.

All of these

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