8. Sponges and cnidarians as said to be sessile or stationary? What does
this mean?
A. They are free living.
B. They do not move al all.
C.They move every now and then.
D. They have to get attached to something
9. Which of the following is not true about vertebrates?
A. Are animals that has back a backbone and skeleton
B. Are animals which have backbone
C. Are animals that have spinal column and skeleton formed from bones
D. Are animals that have no backbone
10. Which among ihis is an example of natural ecosystem?
A. Dam B. Grassland C. Subdivision D. Wheat field
11. Which of the following belongs to abiotic components of ecosystem?
A. Algae B. Bacteria C. Fungi D. Mud
12. This is the lop part of rainforest, what is it?
A. Canopy B. Floor C. Sub-canopy
D. under story
13. What is formed when coral colonies grow close to the shore?
A. Artificial reef B. Atoll C. Barrier reef D. Fringing
14. How long does it take for a coral reel to form?
A. For a few years
B. For a few months
C. Over a short period of time D. Over a long period of time
15. What is the main reason for the diminishing rainforest area in the
Philippines?
A. Climate change
C. Dynamite fishing
B. Deforestation
D. Erosion
16. Which is not a type of coral reef?
A. Atoll
B. Barrier reef
C. Fringing reef
D. Lagoon
17. How can mangrove plants tolerate saltwater?
A. They filter salt from the water using their roots.
B. Their back is made of salt proof material.
C. They use sall and waler lo make food.
D. They do not absorb saltwater.
18. Which is not a function of mangrove roots?
A. Filter out salt
B.Build up shorelines
C. Absorb and store salt from the water
D. Remove impurities and pollutant from the water​