Question

1. Identify the invertebrates described in each number.
1. They are soft-bodied flatworms.
2. They have no backbone, instead, they are composed of spiny speckles which serve as
skeleton.
3. They are soft-bodied animals with hard excernal shell
4. They have hard outer exoskeleton or cuticle and jointed body and limbs.
5. They are equipped with spiny skins and peculiar tube feet.
II. TRUE or FALSE
Write T if the statement is true and F if false.
6. Coral reefs are the natural habitat of tropical fishes.
7. Massive production of coral may endanger the marine life
8. Corals are combination of remains of dead-sea animals and human
9. Coral reefs protect the coastal communities from destructive waves
10. Coral reefs are food to some marine lives.
III. Write OUCH if the given is a threat to coral reefs and Yahoo if it is not
11. Muro-ami
12. Nominating coral reefs as one of the world's wonders.
13. Using nets in fishing
14. Selling of corals as souvenirs.
15. Forming groups to save and maintain coral reefs.

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Answer 1

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1. Flatworm, also called platyhelminth, any of the phylum Platyhelminthes, a group of soft-bodied, usually much flattened invertebrates. A number of flatworm species are free-living, but about 80 percent of all flatworms are parasitic—i.e., living on or in another organism and securing nourishment from it.