1. In which part of the digestive system does digestion start when chewing food? *

A. mouth

B. esophagus

C. stomach

D. small intestine

2. Joel always eats nutritious breakfast like fruits, vegetables, eggs, chicken, and rice before attending the virtual class. Which is the first process of digesting food? *

A. Digested food is absorbed in the small intestine.

B. Food is broken into smaller pieces.

C. Undigested food goes to the large intestine.

D. Solid waste stays in the large intestine temporarily.

3. In which organ does the final/last digestion happen? *

A. mouth

B. stomach

C. small intestine

D. large intestine

4. Which of the following is the correct path of the breathing process in the respiratory system? *

A. nose--pharynx--larynx--trachea--lungs--bronchi--alveoli

B. nose--pharynx--larynx--lungs--trachea--bronchi--diaphragm

C. nose--pharynx--larynx--trachea--bronchi--alveoli--lungs

D. nose--pharynx--larynx--trachea--lungs--diaphragm--bronchi

5. The COVID 19 pandemic attacks the main part of the respiratory system of the body. Which is the function of the respiratory system? *

A. digestion of food in the body

B. transporting of oxygenated blood and deoxygenated blood

C. coordinating of all body activities

D. breathing processes of the body

6. Which of the following organs is not a part of the circulatory system? *

A. heart

B. blood

C. blood vessels

D. lungs

7. It is a group of warm-blooded animals with fur and mammary glands. *

A. birds

B. fishes

C. mammals

D. reptiles

8. it is an animal that has a beak and is well adapted to flight. *

A. rabbit

B. kangaroo

C. ostrich

D. crocodile

9. Which pair of vertebrates are warm-blooded? *

A. fish and bird

B. birds and mammals

C. reptiles and fishes

D. amphibians and mammals

10. Which of the following is not a characteristic of amphibians? *

A. warm-blooded

B. moist skin

C. cold-blooded

D. lay eggs in water

11. In which group of vertebrates does a frog belong? *

A. amphibian

B. bird

C. reptile

D. mammal

12. It can be flat, round and segmented. They live in bodies of animals, plants and soil. Most of them are parasites and there are some which are useful *

A. worms

B. snails

C. shellfish

D. insects

13. They have soft bodies, a hard skeleton, foot mantle and a mass of internal organ. *

A. worms

B. snails

C. insects

D. shellfish

14. They may either be filter feeders or herbivores. They use radula, a tongue-like organ with hundreds of teeth while other use their gills to sift food in the water. They are often affected by red tide, a phenomenon caused by an overgrowth of dinoflagellates. *

A. snails

B. worms

C. shellfish

D. insects

15. It has three body segments such as head, thorax and abdomen. *

A. shellfish

B. worms

C. snails

D. insects

16. They have two segments, the head and abdomen. They have eight legs. no antennae and they use silk to make web in order to catch prey and help them reproduce. *
A. worms

B. snails

C. insects

D. spiders

17. In a forest ecosystem, which organisms are directly affected if the population of plants decreases? 

A. herbivores

B. carnivores

C. omnivores

D. predators

18. Why are coral reefs important? *

A. tourist attractions

B. serve as habitat, hatchery and nursery of different marine animals

C. make the water shallow

D. colorful rock-like deposits underwater

19. Which could happen if tropical rainforest is NOT protected? *

A. erosion and landslide

B. same supply of water

C. abundance of wild animals

D. same amount of productivity

20. It is composed of living and non-living things that interact with one another. *

A. Ecosystem

B. Coral reefs

C. Food chain

D. Predation

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