Checking prior knowledge

Is spider multicellular or unicellular organism?

• Unicellular

• Multicellular

Do bacteria have a well defined nucleus?

• Yes

• No

• They have well organised nuclear material

• They do not have nuclear material

All cells have cell wall to protect the cell and give support.

• False only eukaryotic cells have cell wall

• False only prokaryotic cells have cell wall

• Only plant cells have cell wall

• All prokaryotes have cell wall.

Identify the cells which will not have cell wall.

• Muscle cell

• Nerve cell

• Xylem cell

• Phloem cell

Look at these organisms and choose the best statements that describe them

• Three of them are unicellular and one is multicellular

• All are unicellular, one is prokaryotic

• All are unicellular and prokaryotic

• All are unicellular and eukaryotic

• All are unicellular organisms.