Department of Education

Region VI – Western Visayas

Second Quarter Examination Science 7

NAME_______________________________________________YR.& SEC.____________________Date ___/___/_____SCORE__________

Instruction: Read and understand each question that follows. Choose your answer from the choices given and write the letter of the correct answer
legibly on the space provided before each number.
____1. What device is used to view very small things that cannot be seen by the naked eyes?
a. Endoscope b. Microscope c. Stethoscope d. Telescope
____2. What part of the microscope is used to reflect light from the external environment up through the stage?
a. Arm b. Base c. Mirror d. Objective Lenses
____3. Zyhion would like to see clearly the specimen he wanted to observe using the microscope. What part of the microscope will he adjust for him
to do what he want?
a. Coarse Adjustment b. Fine adjustment c. Objective lenses d. Eyepiece
____4. Which of the following is TRUE about the invention of the microscope?
a. The first to invent the microscope were the Greeks
b. The glass was discovered by the Italians living in Rome
c. The first to invent the compound microscope were Zacharias and Hans Janssen
d. All of the above
____5. Joshua wants to observe the onion cells under the microscope. Which of the following will he do to achieve his goal?
a. Joshua will adjust the mirror so the light could go up through the stage and into the specimen
b. Joshua will switch the lens from low powered objective to high power objective
c. Joshua will adjust the coarse adjustment so he could see clearly the specimen
d. All of the above
____6. Which part of the microscope is used to hold the slides in place?
a. Stage b. Stage clips c. Objective lenses d. Mirror
____7. What is considered the basic structural and functional unit of life?
a. Cell b. Organ c. Organ systems d. Tissue
____8. Which of the following scenarios signify a community?
a. A group of dogs in a farm c. A group of horse in a farmland
b. A group of cats in a farmhouse d. A group of cows together with a group of carabaos in a farmland
____9. Which of the following differentiates organs from tissues?
a. Organs make up tissues; tissues make up organs c. Organs and tissues make up an organ system
b. Tissues make up organs; cells make up tissues d. Organs and tissues are made up of cells
____10. The organ systems of plants are consist of the root and shoot systems. Why is it important for these organ systems to work together?
a. To grow and survive c. To survive floods and strong winds
b. To avoid pests and other animals d. To survive droughts and earthquakes
____11. Which is the correct sequence – from biggest to smallest – of the levels of organization in an organism?
a. Cell – organ – organ system – Tissue c. Tissue – cell – organ – organ system
b. Organ – organ system – tissue – cell d. organ system – organ – tissue – cell
____12. Which part of the cell is known as the control center of the cell?
a. Cell Membrane b. Nucleolus c. Nucleus d. Ribosomes
____13. Which part of the plant cell contains chlorophyll that absorbs energy from the sun to make food for plants?
a. Chloroplast b. Cytoplasm c. Nucleus d. Vacuoles
____14. Which part of the cell is known as the powerhouse of the cell that converts glucose to a form of
energy usable by the cells?
a. Cell Membrane b. Cytoplasm c. Mitochondria d. Nucleus
____15. What part of the animal cell is not present in plant cells?
a. Cell Membrane b. Centrioles c. Nucleus d. Vacuoles
____16. What parts of the plant cells are not present in the animal cells?
a. Chloroplast and Cytoplasm c. Cell Membrane and Nucleolus
b. Chloroplast and Cell Wall d. Vacuoles and Ribosomes
____17. Why is the cell wall important to plant cells?
a. It converts energy from the sun to a form usable to the cell
b. It helps in the production of spindle fibers during cell division
c. It serves as another level of protection and it gives shape to plant cells
d. It digests unnecessary waste/trash in the cell.
____18. If the chloroplast of the plant cell is damaged, which of the following will it be unable to do?
a. Protects the cell c. excretes waste materials
b. Makes food for the cell d. gives instruction for cell to reproduce
____29. Which of the following statement is TRUE about nucleolus?
a. It is located inside the nucleus c. Both a and b
b. It is responsible for producing ribosomes d. None of the above
____20. Why animals can’t survive on their own?
a. Because they don’t have nucleus that makes food for them
b. Because they don’t have cytoplasm that makes food for them
c. Because they don’t have chloroplast in their cell to make food for them
d. Because they don’t have centrioles that make the food for them
____21. Which of the following sets of cell organelles is present both in plant and animal cells?
a. Nucleus, cell membrane and cytoplasm c. Cell Membrane, cytoplasm and cell wall
b. Nucleus, centrioles and nucleolus d. Cell Membrane, ribosomes and chloroplast
____22. Which cell organelle is consisted of jelly-like substance where all other cell organelles are located?
a. Cell Membrane b. Cytoplasm c. nucleus d. ribosomes
____23. Nucleus keeps the DNA of the cell. Prokaryotic cells have no true nucleus. Where do you think the
prokaryotic cells keep their DNA?
a. In the cytoplasm b. in the nucleoid c. in the ribosomes d. in the lysosomes
____24. What is common to organisms belonging to the prokaryotes group?
a. They are mostly multicellular organisms c. they reproduce via binary fission
b. They are unicellular organisms d. they are mostly anaerobic
____25. Which sets of cell organelles is present in both prokaryotic and eukaryotic cells?
a. Ribosomes, nucleus and nucleolus c. nucleus, nucleoid and cytoplasm
b. Ribosomes, cell membrane and cytoplasm d. cytoplasm, cell membrane and nucleoid
____26. What mode of reproduction requires two parents of different sexes to produce a new being?
a. Asexual Reproduction c. Budding
b. Sexual Reproduction d. Fragmentation
____27. What type of asexual reproduction where the new individual comes from the unfertilized eggs of the mother?
a. Budding b. Fragmentation c. Parthenogenesis d. Spores
____28. Which of the following forms of reproduction does not belong to the group?
a. Budding b. Fragmentation c. Vegetative Reproduction d. allogamy
____29. What happens during fertilization?
a. 2 eggs from the female parent and 1 sperm from the male parent unite together to form a zygote
b. 2 sperms from the male parent and 1 egg from the female parent unite together to form a zygote
c. 1 sperm from the male parent and 1 egg from the female parent unite together to form a zygote
d. 1 sperm from the male parent and 1 sperm from another male parent unite to form a zygote
____30. What do you call the specialized cells of the animals that reproduce sexually?
a. Sperm cells b. egg cells c. gametes d. tissue
____31. Hermaphrodites are organisms that can produce both the male and the female gametes at the same time. What do you call the type of
reproduction of the Hermaphrodites?
a. External Fertilization b. Autogamy c. Internal Fertilization d. allogamy
____32. How important is reproduction of organisms?
a. It is the way for organisms to get their own food to survive
b. It is the way for organisms to provide food for each other to survive
c. It is the way for organisms to continue their kind, so they will not get extinct
d. It is the way for organisms to decrease the number of populations in the planet
____33. What is defined as a system of complex interaction between different populations and their nonliving environment?
a. Food chain b. Food web c. Ecosystem d. community
____34. What do you call the component of the ecosystem that refers to the nonliving things in the environment?
a. Biotic Components b. Biosphere c. Abiotic components d. none of the above
____35. Why is it important for living things and nonliving things to interact with each other?
a. Because living things need the nonliving environment to survive
b. Because living things together with the nonliving things can reproduce together
c. Because living things together with the nonliving environment can make the planet become a paradise
d. None of the above
_____36. What relationship exists between two organisms when they both benefit from each other?
a. Commensalism b. Competition c. Mutualism d. Parasitism
_____37. What relationship exists between two organisms where one benefits from the other and the other is harmed?
a. Commensalism b. Competition c. Mutualism d. Parasitism
____38. What relationship exists when several organisms rely on a limited environmental resource?
a. Commensalism b. Competition c. Mutualism d. Parasitism
_____39. Which abiotic factor has the least effect on the ability of organisms to live in a cave?
a. The amount of energy c. The amount of water available
b. The amount of oxygen d. The shape of the cave
_____40. Which of the following experiments is studying the effect of an abiotic factor?
a. Investigating how the amount of precipitation affects the growth of a species of grass
b. Observing the interactions between different fish inhabiting a coral reef
c. Identifying the sources of food for an elephant population
d. Investigating how goats on a mountain compete for food

Trust yourself, you know more than you think you do. - Dr. Spock

Prepared by:

MERCY D. DILLA EDWIN G. DUMOPOY SELMA D. BAGASO

Checked and Verified by:

ALLAN A. ALOVERA PhD