PLANT TISSUES

The size of the stem increases in width due to ___________.

• primary meristem

• apical meristem

• intercalary meristem

• lateral meristem

Sieve tubes and companion cells are present in _____________.

• xylem

• phloem

• cork

• cambium

A twig of white-coloured flowers is placed in a beaker containing coloured water. After some time, the white petals become coloured. Which tissue is responsible for this?

• Xylem

• Phloem

• cork

• cambium

Which of the following is not a function of epidermal tissue?

• Protection

• Absorption of water

• Transport of water

• Gaseous exchange

The flexibility in plants is due to a tissue called ___________.

• chlorenchyma

• parenchyma

• sclerenchyma

• collenchyma

When a grass lawn is mowed, its meristematic tissues get cut off. However, they still regrow. This is due to the presence of

• lateral meristem

• intercalary meristem

• epidermis

• apical meristem

It is difficult to pull out the husk of coconut because

• sclerenchyma cells are closely packed

• collenchyma cells have thickened corners

• xylem gives mechanical strength

• epidermis has a thick cuticle

Which of the following statements about meristematic tissue is incorrect?

• Thin-walled cells with large prominent nuclei

• Thick-walled cells with large intercellular spaces

• Divide actively leading to growth

• Small cells rich in cytoplasm

Find the mismatched pair.

• Vascular tissue: Transport

• Ground tissue: Storage

• Dermal tissue: Reduce transpiration

• Permanent tissue: Growth

Which of the following forms the main conducting unit of the xylem?

• Tracheids

• Vessels

• Xylem fibres

• Xylem parenchyma