Page 25 - Grade 4 Q2W5-sample

10. If a farmer used insecticide on his farm, which living things will be
greatly affected first from the box?
a. plants
b. woodpecker
c. rats
d. adult cockroach and parasitic wasps
11. If parasitic wasps grow in numbers which will be affected most?
a. plants
b. woodpecker
c. roach eggs
d. rats
12. More woodpeckers are coming into the area. Which living things
will be affected most?
a. nymph and cockroaches
b. parasitic wasps and plants
c. rats and wasps
d. plants only
13. How frogs will be affected by drought?
a. frogs stop mating and breeding
b. frogs buried their body on mud during day time
c. female frogs lay more eggs
d. both a and b are correct
14. At home, how do you control the cockroach population without
harming the environment?
I. by using pesticide to kill the cockroach
II. by using insecticide to kill the cockroach
III. by keeping our house clean
IV. by keeping our house bright and dry
a. I only b. II only c. II and III d. III and IV

15. How do frogs help the environment?
a. frogs eat insects which are pests to farmers
b. frogs produce oxygen
c. frogs produce carbon dioxide
d. frogs make the soil fertile