Unit 5 - Natural Environment 6th

What is the natural environment?

• Living things that are naturally on the Earth.

• Non-living things that are naturally on the Earth.

• Living and non-living things that are naturally on the Earth.

• Environments built by the human beings.

Which of these is a living thing?

• Water

• Rocks

• The Sun

• Plants

What is a non-living thing?

• Fish

• Water

• Algae

• Bacteria

How do we call the environment changed by human beings?

• Urban environment

• Urban landscape

• Built environment

• Natural environment

What is the basic unit of life?

• The proteins

• The cells

• The insects

• The bacteria

Which part controls the cell?

• Cell membrane

• Nucleus

• Cytoplasm

• Mitochondria

Which part covers and protects the cell?

• Cell membrane

• Nucleus

• Cytoplasm

• Mitochondria

Which part carries out the different functions of the cell?

• Cell membrane

• Nucleus

• Cytoplasm

• Mitochondria

Which part is made of a jelly-like material?

• Cell membrane

• Nucleus

• Cytoplasm

• Mitochondria

What is the difference between a plant cell and an animal cell?

• The plant cell mebrane is flexible

• The plant cell has a cell wall around the membrane

• The plant cell has no nucleus

• The animal cell has no nucleus