SCIENCE FORM 3 CHAPTER 3

Transpiration is a process where plants lose water in the form of water vapour into the atmosphere by....

• condensation

• evaporation

• distillation

• sublimation

Choose the part of a plant where transpiration takes place.

• root

• stem

• flower

• leaf

The following structures are found in a cross section of a leaf except....

• lower epidermis

• spongy mesophyll cells

• palisade mesophyll cells

• epithelial cells

Which of the following helps to reduce the lose of water from a plant?

• the arrangement of palisade mesophyll cells

• the presence of xylem

• the waxy layer of cuticle

• the arrangement of spongy mesophyll cells

The water lose from a plant through the

• xylem

• phloem

• stomata

• epidermis

The opening of closing of stomata is controlled by the...

• guard cells

• palisade cells

• lower epidermis cells

• phloem

During day, stomata usually..

• closed

• opened

• shrink

• expand

During photosynthesis, this substance enter the leaf through the stomata.

• water

• glucose

• carbon dioxide

• oxygen

In plants, water can lose through these processes...

• Transpiration

• Translocation

• Guttation

• Secretion

The water droplets which formed through guttation is known as....

• water vapour

• tears

• dew

• sweat