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Tai Kwong Hilary College Assignment: Grade 7 Science Week 36

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Tai Kwong Hilary College Assignment: Grade 7 Science Week 36

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Questions and Answers

What is the primary source of oxygen for fish?

The water through their gills (correct)

The air at the water's surface

The fish's scales

The fish's fins

Which process is likely occurring in the leaf if only carbon dioxide is moving into the leaf and oxygen is moving out of the leaf?

Transpiration

Photosynthesis (correct)

Respiration

Decomposition

What is the role of the part labelled X in the leaf?

It is responsible for absorbing carbon dioxide (correct)

It is responsible for releasing oxygen

It is responsible for producing glucose

It is responsible for regulating water loss

What is the byproduct of respiration that fish release into the water?

Carbon dioxide Signup and view all the answers

What is the main difference between the way fish and humans obtain oxygen?

Fish use their gills, while humans use their lungs Signup and view all the answers

What is the role of gills in fish?

obtaining oxygen from the water Signup and view all the answers

What is the process by which fish release carbon dioxide?

excretion Signup and view all the answers

What is the direction of oxygen movement in a leaf during respiration?

out of the leaf Signup and view all the answers

What is the function of the part labelled X in the leaf?

not specified in the given text Signup and view all the answers

What is the source of oxygen for a leaf?