GASEOUS EXCHANGE

Name the gaseous exchange structure in a root.

• Lenticel

• leaves

• stomata

• Stoma

Name the apparatus shown

• Photometer

• Pootometer

• Potometre

• Potometer

Which process is investigated?

• Rate of transpiration

• Transpiration

• Respiration

• Translocation

What is the aim of the experiment?

• Rate of transpiration

• Transpiration

• Respiration

• Translocation

Name A

• Stomata

• Guard cells

• Stoma

• Guard cell

Name part X

• Stomata

• Guard cells

• Stoma

• Guard cell

What is the role of lime water in test tube A?

• To absorb Carbon (IV) oxide

• To show that atmospheric air has low concentration of Carbon (IV) oxide.

• To absorb Carbon (IV) oxide from the living mammal

• None of the above.

What observation is made in Boiling tube B

• Milky substance formed

• It rose in level

• It forms a white precipitate

• No colour change

Which of the following is not a characteristic of a respiratory structure?

• It is moist

• Has large surface area

• It is highly vascularised

• It is rich in mitochondria

Identify the structure shown

• Alveoli

• Alveolus

• Villus

• Villi