The document is a quiz containing various science questions related to human anatomy, plant biology, and environmental awareness. It covers topics such as the functions of different body parts, characteristics of plants, and the importance of environmental conservation. Each question is accompanied by multiple-choice answers, testing the reader's knowledge on these subjects.

1. Science 3

2. 1. What part of the eye control
the amount of light allowed to
enter the eye?
A. cornea
B. iris
C. lens

3. 2. There is a snail-shaped tube in our
ear that is filled with liquid. This tube
also contains the nerves that send
messages to the brain. What is this?
A. ear drum
B. cochlea
C. pinna

4. 3. Which part of the tongue tells us if
the food we eat is sweet, sour, salty
or bitter?
A. nerves
B. papillae
C. taste buds

5. 4. What layer of the skin contains
dead skin cells?
A. dermis
B. epidermis
C. sweat glands

6. 5. What is the function of the optic
nerve?
A. It sends messages to the brain so
that we can tell what we see.
B. It sends messages to the brain so
that we can tell what we smell.
C. It sends messages to the brain so
that we can tell the sounds we hear.

7. 6. What does the lens of the eyes do
to the light that enters to our eyes?
A. It allows light to enter the eye.
B. It controls the amount of light that
enters the eye.
C. It bends the light coming into the
eye and focuses it upon the retina.

8. 7. The hammer, anvil and the stirrup are the
three tiny bones found in our ears. How do
they send sound to the inner ear?
A. They move slowly so that they can send the
sound to the inner ear.
B. They move one at a time then the stirrup will
send the sound to the inner ear.
C. They rapidly move one after the other and
then send the sound to the inner ear.

9. 8. Cilia are found in the nostrils. Why
are they there?
A. to cool the air getting into the nostril
B. to keep the air moist as it enters the
nostril
C. to strain dust particles as they enter
the nostril

10. 9. What is the function of the sweat
glands in our skin?
A. They clean our blood vessels.
B. They produce oils that prevent the
skin from drying.
C. They remove excess water and salt
from the blood through the sweat.

11. 10. The pinnae are shaped like shells and
are attached to the sides of the head.
Why are they important?
A. because they make us beautiful
B. because they send sound waves to the
inner ear
C. because they collect sounds from all
directions and direct them into the ear
canal.

12. 11. Which part of the plant grows
downward into the ground?
A. flowers
B. leaves
C. roots

13. 12. What part of a plant helps
hold the plant up? It also carries
water and minerals from the roots
to the leaves.
A. fruit
B. leaf
C. stem

14. 13. Which part of a plant attracts
various insects using its scent and
colorful display?
A. stem
B. roots
C. flower

15. 14. A plant has tall, strong stems but very small
roots. It is struggling to stay healthy even though
the soil has plenty of water. What is the most likely
reason?
A. The stem is not strong enough to support the
plant.
B. The small roots cannot absorb enough water
and nutrients.
C. The leaves are not getting enough sunlight to
make food.

16. 15. Your younger brother is
wounded because he stepped on
the broken glass. Which plant will
you use to wash the wound?
A. guava leaves
B. oregano leaves
C. lagundi leaves

17. 16. Which among the following
plants is used as medicine?
A. mango
B. lagundi
C. orchid

18. 17. Which of the following
describes the use of guyabano
leaves?
A. use to cure wounds
B. use to cure headache
C. use to cure cough and asthma

19. 18. Why are plants important to
humans?
A. Plants provide food and fertilizer.
B. Plants provide food,
transportation, and clothing.
C. Plants provide food, medicine,
clothing, building materials, and fuel.

20. 19. Which statement is correct?
A. Living and non-living things can
grow and change.
B. Living things cannot reproduce
while non-living things can reproduce.
C. Living things move by themselves
while non-living things move when
someone pushes or pulls them.

21. 20. How is the movement of living things different
from nonliving things?
A. Living things are stationary and move by the
force of the wind, while nonliving things move by
themselves.
B. Living things can be moved by animals, while
non-living things move by themselves.
C. Except for plants, living things can move from
one place to another on their own. Non-living
things are immobile, but they require someone to
make them move.

22. 21. Which animal group has mammary
glands and gives birth to live babies?
A. Mammals
B. Reptiles
C. Amphibians

23. 22. You see an animal with smooth,
wet skin. It lives near water and lays its
eggs in ponds. Which group does this
animal belong to?
A. Mammals
B. Reptiles
C. Amphibians

24. 23. Which of the following are to be
put in the bins labeled with PAPERS?
A. 1.5 bottles and cans
B. plastic cups and spoons
C. sheet of papers and tissue

25. 24. Why do the YES-O officers want to ensure that
garbage are properly segregated?
A. Because they will be punished if they will not do
their duties
B. Because they will get high scores if they will
ensure cleanliness
C. Because proper segregation is helpful in
protecting the environment

26. 25. Both the father and mother have black eyes
and brown skin. The father has thick lips and
curly hair, while the mother has thin lips and
straight hair. Which of these observable
characteristics could be inherited by their
children?
A. brown eyes and skin, curly hair, and thick lips
B. black eyes, dark skin, straight hair, and thin lips
C. black eyes, brown skin, curly hair, and thick
lips

27. 26. Which observable characteristics will the
sunflower plant inherit from the parent plant?
A. the shape of the stem, size of leaves, the
color of roots
B. the color of the flower, the color of the seed
and the leaf pattern
C. the color of the stem, the shape of the
leaves, and the texture of the flower

28. 27. The mother dog and its puppy
have short tails. Which observable
characteristic did the puppy inherit
from its mother?
A. color of the tail
B. length of the tail
C. texture of the tail’s fur

29. 28. What is needed by plants in
the process of photosynthesis and
provides heat to all living things?
A. air
B. water
C. sunlight

30. 29. Why do we need to protect
our environment?
A. It is what the law tells us to do.
B. It is what we learned in school.
C. It is the only place where living
things can survive.

31. 30. What is a harmful effect of not
protecting and conserving our
environment?
A. It will become better for living things to
live in.
B. It will become a safer place for living
things to live in.
C. It will be polluted and harmful for living
things to live in.