grade 5 , con 3 , leeson 5

Coral reefs are considered as resources of

• food only.

• shelter only.

• food and shetter

• food and pollution.

Algae in coral reefs provide food for

• primary consumers

• secondary consumers

• producers

• directly.

Coral reefs bleaching negatively affects directly.

• parrotfish only

• triggerfish only

• butterflyfish and shark

• PParrotfish a d tiggerfish

All marine living organisms in seas and oceans form

• many food webs.

• one food chain only.

• two separated food chains only.

• three separated food chains only.

Which of the following two living organisms don't have direct food relationship between them?

• Parrotfish and shark.

• Butterflyfish and shark.

• Triggerfish and shark.

• Eagle and shark.

............are living organisms that are negatively affected by pollution of marine ecosystem

• WWhales and lions

• Sharks and tiger

• Elephants a d deers

• AAlgae and fish

The polluted Woter has a positive effect on coral reefs

• True

• False

Primary consumers and the predators in seas and oceans are negatively affected by rising water temperature

• True

• False

Solar reefs depends on butterflyfish for food and shelter

• TTrue

• FFalse

Colar reefs are considered as a suitable habitat for sharks

• TTrue

• FFalse