Diffusion Quiz for grade VIII

Diffusion of molecules takes place from what?

• from lower concentration to higher concentration

• from root to shoot

• from higher concentration to lower concentration

• from root to root hair

The exchange of oxygen and carbon dioxide into and out of the leaf cells for photosynthesis and respiration takes place by?

• Osmosis

• Diffusion

• Transpiration

Diffusion takes place in

• only solid

• liquid and gas

• solid liquid and gas

• only gas

Unicellular organisms like __________ and simple multicellular organisms like__________ use diffusion for material transport.

• yeast, spirogyra

• algae, jellyfish
• bacteria, sponges
• chlamydomonas, spirogyra

Water diffuses from the leaf into the external environment of diffusion through?

• Stomata

• Cell wall

• Stem