Grade 10 Science 4th Quarter

Republic of the Philippines Nueva Ecija University of Science and Technology Fort Magsaysay Campus, Palayan City 4TH QUARTER TEST IN GRADE 10 SCIENCE Name:________________________ Year/ Section:__________________

Score:____________ Date:_____________

TEST I – Choose the letter that bests answer the question or completes the statements. Any forms of erasures are considered incorrect. Encircle only. (20 pts.) 1.

2.

3.

4.

5. 6.

7.

8. 9. 10. 11.

12.

13. 14.

A species is defined as a. A population of organism similar in size, shape and color. b. A group of organisms that live in the same habitat. c. A population of organisms that are able to interbreed. d. A population of organisms that have the same number of chromosomes. In certain species crosses, such as that between the horse and the donkey, offspring are produced, but they are usually sterile. The most common explanation of this result is that a. The chromosomes of the two species differ too much to pair properly in meiosis b. The two species differ too much in behavior to be able to mate successfully c. Embryological development in the two species are incompatible d. Hormonal differences between the two species prevent proper development of the sex organs Which of the following is a correct statement about mutations? a. They are a source of variation for evolution. b. They drive evolution by creating mutation pressures. c. They occur in germ cells but not in somatic cells. d. They are most often beneficial to the organisms in which they occur. Which of the following statements best describes the effect of a genetic drift on the gene frequencies of a population? a. Genes enter a population through immigration, thus changing gene frequencies. b. Genes leave a population through emigration, thus changing gene frequencies. c. Chance alone can cause significant changes in gene frequencies of small populations. d. Selection against one allele causes gene frequencies to change. The bones of a human arm are homologous to structures in all of the following EXCEPT a a. Whale flipper c. butterfly wing b. Bat wing d. frog forelimb Which of the following best defines evolution? a. A change in environmental conditions b. A change in genotype of a population c. A change in the genotype of an individual d. A change in the phenotype of organisms in a population Which of the following statements is NOT part of Darwin’s theory of natural selection? a. Most species overproduce offspring b. Competition between populations produces variation c. Individuals with advantageous characteristics tend to survive d. Survivors pass their advantageous characteristics to their offspring. Evolution is genetic change in ____________ that occurs over time. a. A cell c. a population b. An individual d. a community The major source of variation in bacteria is a. Mutation c. genetic recombination b. Genetic drift d. asexual reproduction An abrupt change in the gene that results in genetic diversity is called a. Mutation c. speciation b. Evolution d. genetic drift Divergence of species that may begin with geographic isolation, selection, then culminates in reproductive isolation is called a. Variation c. phylogeny b. Speciation d. adaptation Which of these environmental problems are difficult to solve because the people involved generally belong to the poorer sector of society and the government wants to help them? a. Indiscriminate logging and kaingin farming c. kaingin farming and forest fires b. Conversion to agricultural land and forest fires d. kaingin farming and natural calamaties Which of these are difficult to solve because they are basically natural causes? a. Human settlements and forest fires c. Indiscriminate logging and kaingin farming b. Natural calamities and forest fires c. human settlements and kaingin farming The following environmental problems can be traced to deforestation EXCEPT: a. Depletion of wildlife resources c. greater erosion b. Depletion of mineral resources d. more floods

15. Which of the following fishing methods is NOT destructive to marine ecosystems? a. Muro-ami c. use of fine-mesh fishnets b. Cyanide fishing d. use of course-mesh fishnets 16. Which of the following environmental problems is responsible for “fish kills” in the Philippines? a. Deforestation c. wildlife depletion b. Pollution d. acid rain 17. The following activities promote sustainable use of resources EXCEPT: a. Reforestation c. breeding species with favorable adaptations b. Recycling of materials d. draining a swamp and using the area for agricultural purposes 18. The following are advantages of using solar energy EXCEPT: a. Electricity from solar energy will cost practically nothing to interested users. b. The supply of solar energy will last for a very long time. c. Conversion of solar energy to electrical energy does not release pollutants. d. Solar energy is available practically everywhere on Earth. 19. The following are Philippine legislations that regulate the use of natural resources EXCEPT one. Which among these? a. Philippine environmental code b. National Integrated Protected Areas System Act of 1992 c. Law prohibiting the use of explosives and other toxic substances in fishing d. Toxic and Hazardous Substances and Wastes Act 20. Which of the following era in geological time scale represents the longest time period? a. Precambrian c. Mesozoic b. Paleozoic d. Cenozoic TEST II – Identify what is being asked in the following. Write you answers on the space before each number. (30 pts) _______________1. Defined as the number, variability and variety of living things on Earth. _______________2. The most recent/modern era of the geological time scale. _______________3. The study of the remains of organisms in the past. _______________4. The fundamental unit of evolution. _______________5. Refers to the development of new species from other species that leads to species diversity. _______________6. He proposed the theory of natural selection. _______________7. Refers to changes in characters of organisms in a population due to genetic recombination or mutation. _______________8. Refers to the process whereby a species is able to tolerate environmental conditions of a place and to efficiently with other species that can also tolerate the same conditions. _______________9. A natural interconnection of food chains and generally a graphical representation of what-eatswhat in an ecological community. _______________10. Refers to the role and position a species has in its environment. _______________11. The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. _______________12. Each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy. _______________13. A method for determining the age of an object containing organic material by using the properties of radiocarbon (14. C), a radioactive isotope of carbon. _______________14. Excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen. _______________15. The number of people, other living organisms, or crops that a region can support without environmental degradation. TEST III – Enumerate what is being asked in the following. (25 pts.) a. b. c. d. e.

(1-6) evidences of evolution (7-9) different type of adaptations (10-14) five major ideas that explains how natural selection works (15-19) five major levels of biological organization (20-25) principal causes of deforestation in the Philippines

“Push yourself because, no one else is going to do it for you” “Goodluck and Godbless” Prepared by: Sir GAQ