Pisay Exam 7
Pisay Exam 7
Pisay Exam 7
Name:________________________________________________________ Date:____________
REVIEWER 6 -Science
I. Direction: Write the letter of the correct answer on the line.
______1. _________is an environment where both living and non-living things exist and interact with one another.
a. ecosystem b. forest c. city d. Earth
______2. _________ starts with a producer then series of consumers and lastly decomposer.
a. food track b. food service c. food chain d. food web
______3. ________ provides food for the animals in the food chain and food web.
a. Sun b. producer c. Consumer d. mecomposer
______4. _______ is an interaction where organisms live together without harming one another.
a. competition b. commensalism c. parasitism d. mutualism
______5. ________ is an interaction wherein organisms compete for survival.
a. competition b. commensalism c. parasitism d. mutualism
______6. _________ both organisms benefit in the relationship.
a. competition b. commensalism c. parasitism d. mutualism
______7. What do you call the animals with spine or backbone?
a. Vertebrates b. Invertebrates c. Vivaporous d. Omnivoparous
______8. Which group of animals have mammary glands to feed their youngs?
a. Amphibians b. Fish c. Mammals d. Birds
______9. Which group of animals have moist skin and can live both on land and water?
a. Amphibians b. Reptiles c. Mammals d. Birds
______10. What animals have dry and scaly skins?
a. Amphibians b. Reptiles c. Mammals d. Birds
______11. Which group of animals have beaks and wings?
a. Amphibians b. Reptiles c. Mammals d. Birds
______12. Which group of animals have gills and fins?
a. Amphibians b. Fish c. Mammals d. Birds
______13. Which among these animals is an example of mammal?
a. bat b. gecko c. shark d. sea horse
______14. Which among these animals is an example of mammal?
a. kiwi b. crocodile c. shark d. dolphin
______15. The largest group of invertebrates is the arthropod group. What do all arthropods have in common?
a. They live on land and have an exoskeleton.
b. They have segmented bodies and jointed legs
c. They can fly and have jointed legs.
d. They have skeleton and segmented bodies.
______16. Why do some mollusks have shells?
a. So they can live both on land and water
b. This as a reason why mollusks have shell.
c. To make it easier to find food.
d. To protect their soft bodies.
______17. Which of these look like a plant but actually a marine fish?
a. sting ray b. oyster c. jellyfish d. sea anemone
______18. Which of these groups of animals belong to echinoderms?
a. bees, butterfly and mantis
b. earthworm, leeches and tapeworm
c. sand dollar, starfish and sea urchins
d. spider, ticks and scorpion
______19. They have no tissue, no organ, and most have no symmetry.
a. sponges b. echinoderms c. cnidarians d. annelids
______20. All of the following belong to arthropods except?
a. jellyfish b. butterfly c. shrimp d. spider
______21. Which group of invertebrates is usually human parasites?
a. poriferas b. crustaceans c. diplopoda d. nematodes
______22. What type of mixture is a solution?
a. Homogenous
b. Heterogenous
c. Miscible
d. Immiscible
______23. Which of the following is not a characteristic of a solution?
a. It is a uniform mixture.
b. It will scatter a beam of light.
c. It is stable over time.
d. The solute and solvent cannot be distinguished by the naked eye.
______24. What is the substance that is being dissolved in a solution?
a. Solute b. Mixture c. Solvent d. Concentrator
______25. What is the substance that dissolves the other substance in a solution?
a. Solute b. Mixture c. Solvent d. Concentrator
______26. In a salt water solution, what substance is considered the solvent?
a. Salt
b. Water
c. Both are solvents
d. Neither substance is a solvent
______27. What is NOT an example of a solution?
a. Acetic acid and water
b. Sugar and water
c. Soil and water
d. Iron and carbon
______28. Which of the following is an example of a solid solution?
a. Carbonated water
b. Steel
c. Oil and water
d. Toothpaste
______29. Which of the following is an example of a gas solution?
a. air b. nitrogen c. helium d. clouds
______30. Which of the following will dissolve in water?
a. soil b. powder c. sand d. gravel
IV. Directions: Identify the kind of muscle that is involved in the given activity.
Choose the correct letter and write it on your answer sheet.
A. Skeletal B. Smooth C. Cardiac
________1. digestion of food ________6. breathing
________2. blinking of the eye _______ 7. beating of the heart
________3. Writing ________ 8. circulation of blood
________4. pumping of blood by the heart ________9. running
________5. bending of body ________10. sneezing
Remember:
Skeletal- voluntary muscles Smooth- involuntary muscles Cardiac- involuntary muscles
___1. The skin is the outermost protection of the body against injury and infection.
___2. The sweat glands release water through the pores when the temperature of a person rises.
___3. The skin contains receptors and nerve endings so that one can sense pain, heat, touch and pressure.
___4. The hair in the nose trap the dust particles in the air you inhale.
___5. Excess salts and urea are taken out of the system in the form of perspiration or sweat.
VI. Direction: Write if the following statement is TRUE or FALSE about the integumentary system.
______1. The skin is the body’s largest organ.
______2. Nails protect the sensitive fingertips and toes from injuries.
______3. Too much exposure to the sun is good for the skin.
______4. If the body temperature rises due to physical activity or hot weather, the sweat glands release sweat which
cools the body as it evaporates.
______5. The dermis is the outermost layer of the skin that blocks the water and microorganisms from entering the
skin.
______6. The subcutaneous layer is a layer of fat below the dermis which serves as insulation of heat.
______7. The skin through exposure to UV rays from the sun helps in the production of Vitamin D which is
essential for bone formation.
______8. The skin also acts as a receptor for touch, pain, pressure, heat and cold.
______9. Fruits and green leafy vegetables are excellent sources of nutrients for healthy skin and hair.
______10. Too much production of oily substance in the skin may clog the pores and microorganisms.
VII. Directions: Choose the letter of the correct answer. Write your answer on your answer sheet.
_____1. Which of the following animals have fins, scales, and gills?
a. amphibians b. crocodiles c. reptiles d. fish
_____2. Which of the following is used for steering and balancing?
a. cartilage b. bone c. endoskeleton d. fin
_____3. Which of the following do NOT have scales?
a. birds b. snakes c. frogs d. fish
_____4. Which of the following are vertebrates with lungs and moist skin?
a. amphibians b. reptiles c. fish d. lizards
_____5. Which of the following animals is covered with hair or fur and care for their young?
a. birds b. mammals c. reptiles d. amphibians
VIII. Directions: True or False. Write TRUE on your answer sheet if the statement is correct. If not, write FALSE.
______ 1. Insects are the largest group of animals on Earth.
______ 2. All birds can fly.
______ 3. A backbone is an endoskeleton.
______ 4. All vertebrates are cold-blooded animals.
______ 5. All invertebrates are soft-bodied animals.
IX. Directions: Read each item carefully. Choose the letter of the correct answer and write it on your answer sheet.
____1. In a forest ecosystem, which organisms are directly affected if the population of plants decreases?
a. predators c. decomposer
b. herbivores d. carnivores
____2. This type of interaction occurs between two species in which one organism benefits while the other
organism is neither benefited nor harmed.
a. predation c. competition
b. cooperation d. commensalism
____3. Which food chain occurs in the forest ecosystem?
a. grass wildebeest lion
b. grass caterpillar bird
c. grass mouse snake
d. grass rabbit owl
____4. Which phrase best describe symbiosis?
a. A relationship where one species serves as food for another species.
b. A relationship where one species relies upon another species as food.
c. A close living relationship between two members of the same species.
d. A close living relationship between two different species.
____5. It is a type of interaction where organism group together for survival.
a. predation c. competition
b. cooperation d. commensalism
X. Give example for each symbiotic relationship or interaction.
• Commensalism - _______________________________________
• Mutualism-_______________________________________
• Predation-_______________________________________
• Cooperation-_______________________________________
• Competition-_______________________________________
• Parasitism-_______________________________________
XI. Direction: Write plus sign (+) if the phrase tells a way of increasing friction and minus sign (-) if it tells a way of
decreasing friction.
_________ 1. using rollers
_________2. using brakes in cars
_________3. wearing rubber shoes
_________4. applying oil on the surface of objects
_________5. using wheels
_________6. using tires with more hollows and bumps
_________7. applying soap and water
_________8. putting sand on the icy sidewalk
_________9. applying wax to skis
_________10. using a stream of air
XII. Direction: Write the letter of the correct answer on your answer sheet.
_____1. When your bicycle runs fast and you want to stop it, you use the brake. Why?
a. The brake makes the wheel slow down and then stop.
b. The brake makes the pedals stop.
c. The brake causes the wheels to run fast.
d. The brake causes the pedals to move.
_____2. You are likely to slide on a shiny floor? Why?
a. because friction is more on smooth surface
b. because friction is less on smooth surface
c. because there is no friction on smooth surface
d. because friction cannot hold you on smooth surface
_____3. Is friction important to cars? Why?
a. Yes, because friction causes the cars to stop.
b. Yes, because friction causes the cars to move.
c. No, because friction can’t slow down cars.
d. No, because friction has no effect on cars.
_____4. Why do tires have hollows and bumps?
a. in order to slide on the surfaces.
b. In order to drag over the surfaces.
c. In order to hold on to different surfaces.
d. In order to move fast.
_____5. A ball will roll faster on the floor than on the grass? Why?
a. because there is less friction on the floor than on the grass
b. because there is more friction on the floor than on the grass
c. because there is less friction on the grass than on the floor
d. because there is no friction on the grass and floor