LET Reviewer (Elementary Science)

Read the sentences carefully then choose the letter of the correct answer

1. When the sperm of the male parents unites with the egg cell of the female parent, __________occurs.

a. respiration
b. fertilization
c. digestion
d. circulation

2. ______ is a sperm duct or tube which serve as storage for sperms cell produced by the testicles.

a. scrotum
b. vas deferens
c. prostate glaands
d. epididymis

3. when the fertilized egg does not make its way to the uterus, pregnancy may develop  in one of the fallopian tube. This pregnancy  is called _______

a. ectopic pregnancy
b. fallopian pregnancy
c. outside pregnancy
d. inverted pregnancy

4. __________ are a pair of bean - shaped organs found behinds the intestines and just above the waist line, which contains more than a million of nephrons.

a. kidneys
b. ureter
c. urinary bladder
d. urethra

5. Below are the causes of the destruction of coral reefs except one.Which one is it?

a. excessive siltation
b. muro ami fishing
c. enforcing no fishing zone
d. the use of cyanide

6. The ________________ usually have a shell either inside or outside their soft bodies. They have jointed legs for walking and swimming.

a. arthropoda
b. echinodermata
c. annelida
d. molluska

7. Which of the group of animals belongs to reptile?

a. snake, crocodile and turtle
b. cow, horse and leopard
c.ostrich, parrot and  maya
d. milkfish, mudfish and tanique

8. It is deep sleep that last for a longtime generally throughout winter.

a. mimicry
b. hibernation
c. estivation
d. protective covering

9. ________ is the process of food making in green plants.

a. glucose
b.photosynthesis
c. chlorophyll
d. chloroplast

10. Why is chlorophyll important in the process of photosynthesis?

a. because it releases energy from the sun
b. because it gets water from the roots.
c. because it produces oxygen.
d. because it traps light energy from the sun

11. plants adapts to intense light like sunflowers, legumes, and grass. they are called ______.

a. photophillic
b. photopholic
c. parasites
d.saprophytes

12. where does the process of food making in green plants occurs?

a. in the roots
b. in the leaves
c.in the fruits
d. in the flowers

13. What kind of consumer is a snake eating chicken?

a. producer
b. primary consumer
c. secondary consumer
d. tertiary consumer

14. How does ampalaya protect itself from enemies?

a. by means of thorns
b. by means of thin, elongated leaves
c. by means of  its unpleasant odors
d. by means of bitter taste

15. Some plants are good sources of medicines. Lagundi is proven to cure __________

a. burns and baldness
b. colds and coughs
c. skin disease
d. heart ailment

16. when water turns to gas when it absorbs enough heat, the process called______.

a. solidification
b.liquification
c. evaporation
d. sublimation

17. which does not affect physical change?

a. cutting
b. pounding
c. rusting
d. grating

18. which is a example of Physical change?

a. onion chopped into small pieces
b. ripening of fruits
c. rusting of iron nails
d.rotten fruits

19.