Transportation in Plants

Substances transported in plants are

• water

• minerals

• food

• all of the above

Diffusion is a major method of transport of materials in

• tall plants

• unicellular plants

• multicellular plants

• both (b) and (c)

Which of the following statements is not true for diffusion?

• Molecules move from region of high concentration to region of low concentration

• Molecules move from region of low concentration to region of high concentration

• Semi permeable membrane is required

• Happens for solids, liquids and gases

Xylem fibres help in

• conduction of water

• conduction of minerals

• mechanical support

• storage of food

Which of the following take part in conduction of water in the xylem?

• Fibres

• Vessels

• Both a and b

• None of the above

Which of the phloem cells help in storage of food?

• Sieve tubes

• Companion cells

• Phloem parenchyma

• Phloem fibres

Absorption of water in plants take place by

• osmosis

• diffusion

• Both a and b

• None of the above

Ascent of sap in plants takes place through

• Cortex

• Epidermis

• Xylem

• Phloem

Root hairs help in absorption of water by

• increasing the surface area

• decreasing the surface area

• holding the plant in the soil

• none of the above

Osmosis can happen

• through a permeable membrane

• through a semi-permeable membrane

• no membrane required

• through all kinds of membranes