2.2 UNICELLULAR ORGANISMS

A single-celled organism is known as .........................

• Multicellular organism

• Unicellular organism

Which of the following is NOT the living process involved in unicellular organisms?

• Respiration

• Excretion

• Growth

• Coordination

Which of the following is NOT an example of a unicellular organism?

• 
• 
• 
• 

Amoeba sp. moves and engulfs food particles using ..............................

• cilia

• pseudopodium

• flagellum

• feet

Paramecium using its ..................... to move and pull food particles into the oral groove.

• pseudopodium

• flagellum

• cilium

• feet

Both amoeba and paramecium form ............................. to undergo food digestion.

• food vacuole

• contractile vacuole

• lysosome

• cell sap

The gases exchange of unicellular organisms occurs through .....................................

• cell wall

• plasma membrane

• nuclear membrane

• cytoplasm

Both paramecium and amoeba can undergo .......................... during suitable environment condition to reproduce.

• conjugation

• binary fission

• spore formation

• vegetative reproduction

Paramecium can undergo sexual reproduction which is known as ....................................

• binary fission

• conjugation

• spore formation

• budding

Protozoa live in freshwater that can cause a lot of water diffusion into the cell. They use ............................ to excrete out excess water from the cell.

• Macronucleus

• Lysosome

• Food vacuole

• Contractile vacuole