Bulawan Integrated School Bulawan, Katipunan, Z.N. First Periodical Test Science Grade 7
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Score: __________ Date: __________
I. Multiple Choice. Read and understand the following statement. Encircle the letter that contains the best answer. 1. A substance substance has a pH of 6. It is said to be a. er! basic b. slightl! basic c. slightl! acidic d. neutral ". #hich of the following is an e$a%ple of a solution solution &'hoose %ore than one( a. )inegar )inegar b. *ud in water c. +ood coloring in water d. Sugar dissoled in water . #hich of the following state%ents best describes %i$turesa. It shows shows two two or %ore %ore co%p co%pone onent nt subst substanc ances es that that can can be c. It cann cannot ot be be separ separate ated d b! an! an! ph!si ph!sical cal %eans. %eans. separated b! ph!sical %eans. d. It is is a si%p si%ple le ind ind of of %at %atte ter. r. b. It has a unifor% appearance appearance and co%position. co%position. e. /. #hat #hat is %eant %eant b! b! the the ter% ter% subs substan tances ces-a. An! An! ob0 ob0ects cts with ith ho% ho%oge ogeneou neouss appe ppearanc rancee and and c. An! ob0ect ob0ectss whic which h are are che% che%ic icall all! ! %i$e %i$ed. d. co%position. d. An! ob0ec ob0ects ts that that can be separa separate ted d thro throug ugh h ph!si ph!sica call b. An! ob0ects with heterogeneous appearance and %eans. co%position. e. . #hic #hich h state state%e %ent nt desc describ ribes es the the solu solute te-a. It is is the the sol solid id for for%e %ed d in solu soluti tion on c. It is the co%p co%pone onent nt of a soluti solution on in s%a s%alle llerr a%ount a%ount b. It is the li2uid part of the solution d. It is the co%p co%pone onent nt of a soluti solution on in bigg bigger er a%oun a%ountt e. 634. A group of student studentss was ased ased to inestiga inestigate te how fast fast sugar dissol dissoles es in cold cold and in hot waterwaterf. 6. If this is going going to to be a fair fair test, test, what ariable ariable should be control control-g. a. A%ount A%ount of water water and sugar in each cup, %ethod %ethod of stirring, stirring, ti%e when the solids solids is added to water, water, how long each solution is stirred. h. b. A%ount A%ount of water and sugar in each cup, %ethod %ethod of stirring, stirring, how long each solution solution is stirre stirred. d. i. c. A%ount A%ount of sugar sugar in each cup5 %ethod %ethod of stirring, stirring, ti%e when the solid is added to water5 water5 how long each each solutio solution n is is stirre stirred d 0. d. A%ount of water in each cup5 cup5 %ethod of stirring, ti%e ti%e when the solid is is added to water5 how long each solution is stirred stirred . .#hat .#hat is the dependent dependent ariable ariable &what is being %easured( %easured( l. I. 7he 7he te%p te%per erat atur uree of wate water r %. II. II. 7he 7he a%ou a%ount nt of sugar sugar n. III. 7he length length of ti%e that sugar co%plete co%pletel! l! dissol dissoles es in in hot water. water. o. I). I). 7he length length of ti%e ti%e that that sugar co%pletel co%pletel! ! dissol dissoles es p. a. I onl! b. II onl! 2. c. II and and III III d. III III and and I) r. 4. #hat #hat is the the indepen independen dentt ariab ariable le in the the inest inestiga igati tionons. a. I onl! onl! b. II and and III III t. c. I, II, II, and and III III d. II, II, III, III, I) u. 8. #hich #hich is the the %ost %ost abundant abundant ele%ent ele%ent in in the at%osphere at%osphere-. a. 9$!gen b. Argon c. Nitrogen d. 'arbon dio$ide w. 1:. #hich #hich does does not not belon belong g to the the grou groupp$. a. a. Sugar b. #ater c. 9$!gen d. 7able Salt !. 11. ;ou were were tased tased to chec chec if the li2uid li2uid sa%ple sa%ple !ou hae is is a substance substance or a %i$ture %i$ture.. #hich a%ong a%ong these these tests tests is the B
one ?phase, ?phase, colorless, colorless, boils at ar!ing te%peratur te%perature. e. #hich of the following B
i. 0. . l. o. p. 2. t. u. . w. $. aa. ab. ac. ad.
18.#hen collecting data, all obserations %ust be, a. interpreted well all the e$pected ones %. c. %anipulated and anal!=ed b. recorded een une$pected ones n. d. organi=ed and well e$plained ":.How results of actiit! can be well interpreteda. if data are co%plete r. c. if data are constant b. if data are organi=ed s. d. if data are sub0ect to changes "1.An obseration %a! be e$plained b! an interpretation. An e$peri%ent %a! be perfor%ed to test a5 a. theor! b. law c. h!pothesis d. inference "".#hich of the following is an obserationa. filtration produces a clearer li2uid !. c. filtration is %ore conenient to use b. filtration %aes use of filter paper =. d. filtration is a wa! to separate solid fro% li2uid ". An e$peri%ent is used to test a. theor! b. law c. h!pothesis d. all of the aboe "/. #hich of the following is the condition in an e$peri%ent that an e$peri%enter changesa. dependent ariable b. independent ariable c. both dependent and independent ariable d. ariables ae. "3"6, +ie sow bugs are placed in closed shoebo$, E of the bo$ is with wet soil and E with dr! soil. af. ".*ae a si%ple e$peri%ent on how to collect data. How should !ou go about ita. Fist down all the behaiors of sow bugs when the shoe c. +ind out where the sow bugs prefer to sta!. bo$ is closed and when !ou open it. d. All of the aboe b. 9bsere their reactions to sunlight. e. "6. How do !ou organi=e the data of !our e$peri%enta. Secure all the %aterials needed c. Interiew nowledgeable person on topic assigned b. Get infor%ation fro% !our faorite teacher d. d .Dut the data in a table for% and graph the% possible. e. ". #hen one forecasts eent based on obserations, heshe is %aing . f. a. 'onclusion b. Dredictions c. Inference d. <$peri%ent g. "4. #hich of the following is done to test the te%porar! answer to a proble%h. a. e$peri%ent b. h!pothesis c. 7rial and error d. Guess i. "8. How can effectiel! predict an outco%e of a particular e$peri%enta. Based the prediction on %ere hearsa! b. As so%ebod! else to do guessing c. 'onduct a thorough research and stud! the results of preious e$peri%ents. d. None of the aboe. 0. :. #hich of the following best describes a h!pothesis. a. 9bseration b. 7entatie answer c. 'onclusion d. All of the aboe l. 1. #hich of the following does not belong to the group%. a. diffusion b. decantation c. filtration d. eaporation n. ". #hich of the following %i$tures can be separated b! %agneti=ationo. a. corn and rice grains b. shoe tacs and sand particles c. oil and water d. salt and water p. . 7o which does a %etal belong2. a. ele%ent b. co%pound c. colloid d. %i$ture r. /. #hich state%ent is not true a. An ele%ent %etal at a definite te%perature c. An ele%ent %a! co%bine with another ele%ent to for% b. An ele%ent is changed into another substance b! heat a co%pound. in the absence of air or another substance. d. An ele%ent %a! e$ist as gas. e. . 7he aerage hu%an bod! contains different ele%ents. #hich of the following ele%ents can be found in the food we eata. nitrogen, carbon, o$!gen, h!drogen, calciu%, iron, phosphorus b. nitrogen, carbon dio$ide, o$!gen, h!drogen, heliu% argon c. nitrogen, o$!gen, chlorine, neon, copper, siler, lead, =inc d. nitrogen, carbon dio$ide , sulfur, calciu%, heliu%, lithiu%, iron f. 6. #hich does not belong to the groupg. a. Sugar b. #ater c. 9$!gen d. table salt h. . Gold is used in 0ewelr! because it can be ha%%ered into thin sheets. It can be for%ed into different shapes without breaing. #hat propert! of Gold is being d escribedi. a. hardness b. %alleabilit! c. luster d. conductiit! 0. 4. #hich state%ent about %etal is truea. *etals conduct electricit!. c. *etals are co%pounds b. *etals breas easil! into pieces d. *etals produce acidic o$ides e. 8. #hich of the following is N97 a per%anent propert! of copperf. a.Its reddish brown color b. its shape c. its %elting point d. its densit! g. /:.A copper wire can be er! thin, this is because %ost %etals can be drawn into thin wire without breaing. #hat propert! is being describedh. a. elasticit! b. conductiit! c. %alleabilit! d. ductilit! i. /1. #hich propert! of copper %aes it a good %aterial for cooing pans 0. a. good conductor of heat b. %alleable and strong c. light resistant to corrosion d. good insulator of electricit!. . /". #hich state%ent about %etal is truel. a. %etals conduct electricit! n. c. %etals are co%pound %. b. %etals brea easil! into pieces o. d. %etals produce acidic acid. p. /.7he following are e$a%ples of %etals e$cept5
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k2. r. Na%e>;ear and Section> Score> s. School> ate> t. u. I.*ultiple 'hoices. ead and understand the following state%ent.
6.6
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1:
. +lowers are the reproductie organs of plants. How are flowers different fro% the reproductie organs of ani%alsa. +lowers hae %ale and fe%ale parts5 ani%als hae either %ale or fe%ale parts. b. +lowers need pollinators lie bees to reproduce5 ani%als do not. c. +lowers are shed fro% ti%e to ti%e5 nothing fro% ani%als. d. 7here is no difference between flowers and reproductie organs of ani%als. /. 7he organ s!ste%s of plants consist of the roots and shoot s!ste%. #h! it is i%portant for these organ s!ste% to wor togethera. 7o grow an surie b. 7o aoid pests and other ani%als c. 7o surie floods and strong winds d. 7o surie droughts and earth2uaes . #hich of the following differentiates organs fro% tissuesa. 9rgans %ae up tissues5 tissues %ae up organs b. 7issues %ae up organs5 cells %ae up tissues c. 9rgans and tissues are %ade up of cells $. d.9rgans and tissues %ae up an organ s!ste% 6. At which s%allest leel of organi=ation in an organis% can the characteristic of life be carried out. !. a.9rgan s!ste% b. 9rgan c. 7issue d. cell . #hich of the correct se2uence ? fro% biggest to s%allest3 of the leels of organi=ation in an organis%. a. cellLorganLorgan s!ste%Ltissue b. organLorgan s!ste%LtissueLcell c. tissueLcellLorganLorgan s!ste =.d. organ s!ste%LorganLtissue Lcell 4. #hich of the following parts allow different actiities of the cell to happenla. a.)acuoles b. l!soso%e c. c!toplas% d. esicle 8. If the chloroplasts of a plant cell are da%aged, which will it be unable to doa.Drotect the cell b.*ae food for the cell c. <$crete waste %aterials d.Gie instruction for the cell to reproduce 1:. Iodine solution to the cell preparation %aes the cells . a. Big b. s%all c. less isible d. %ore isible 11. #hich of the following plant cell parts is not found in onion cellsa. 'holoroplast b. cell wall c. acuole d. %itochondrion lb. 1". #hich parts of the light %icroscope %agnif! the i%age of an ob0ectb.
1. 7he green alga and both hae so%e characteristics si%ilar to plants. #hat are these characteristics co%%on to both that are also found in plants-
ld. I. Green color for food %aing le. II. Ste%3lie parts lf. III. Spores lg. I). +ruit3lie parts a. I and II c. I and III b. II and II d. II and I) lh. li. 1/. @ust lie %an! liing things, fungi hae certain needs to surie. #hat are these needsl0. I. +ood l. II. Air and #ater ll. III. Sunlight and Soil l%. I). #ater ln. a.I and II. c. I and III lo. b. II and III d. II and I) lp.
l!. a. 7he! do not hae true roots, true leaes, true ste%s, fruits and flowers. l=. b. *ost do not %ae their own food unlie plants. %a. c. 7he! are the base of the food chain while the ani%als are at the top. %b. d. 7he! cause diseases while plants and ani%als hae %an! uses. %c. %d. 1. #hich of the following structures are N97 inoled in ase$ual reproduction%e. a. Ga%etes b. 7uber c. Ste% d. oot %f. 14. #hich two parts of the light %icroscope %agnif! the i%age of an ob0ect%g. a. e!epiece and %irror c. ob0ecties and %irror %h. b. e!epiece and ob0ectie d. ob0ecties and diaphrag% %i. %0. 18. A plant cell is iewed using a 1:$ e!epiece and a /$ HD9. How %uch will the cell %agnified%. a./: $ or /: ti%es c./:$ or /: ti%es %l. b./:$ or /: ti%es d./::$ or /:: ti%es %%. %n. ":. #hich should be used to obsere bacteria%o. a./$ ob0ectie and a 1:$ e!epiece %p. b. 6:$ ob0ectie with i%%ersion oil and 1:$ e!epiece %2. c.6:$ ob0ectie and 1$ e!epiece %r. d. 8$ ob0ectie with i%%ersion oil and $ ob0ectie %s. %t. "1.#hich of the following can be obsered using the light %icroscope%u. a.acacia bar b.fie peso coin c. piece of stone d. tip of gu%a%ela %. %w. "". An ani%al cell being obsered is seen at the top%ost part of the field of iew under the FD9. If !ou want to center the speci%en, which direction should !ou %oe the slide%$. a. sideward b. forward c. bacward d. upward %!. %=. na. ". A plant needs water, radiant energ!, %inerals, o$!gen and carbon dio$ide to lie. 7his state%ent shows that organis% depends on which of the followingnb. a. Abiotic co%ponents b. Biotic co%ponents c. 'li%ate d. *inerals nc. "/. #hich of the following represents an abiotic co%ponents of the eniron%entnd. a. Sprouting %ongo seeds b. ugong nursing its !oung c. Grass on %ountain slopes d. +lowing laa ne. ". Setting up an a2uariu% that represents a %ini ecos!ste% has to hae which of the following re2uire%entsnf. a. +ish and water onl! b. #ater, sand, soil, and light onl! c. Dopulations of fish, snails, and plants onl! ng. d. 'o%%unities of different species of organis%s, water, sand, soil, and sunlight. nh. "6. #hich of the following is the correct food chainni. a. GrassLgrasshopperL%a!a bird L haw n0. b.GrassLgrasshopperLsnaeLfrogLhaw n. c.GrassL%ouseLsnaeLhaw nl. d.GrassL%ouseLcrocodile n%. ". #hich of the following describes parasitis%nn. a. +ern plant growing on trun of tree no. b. An orchid liing on a trun of a tree np. c. An insect lara sta!ing on the leaes of a plant n2. "4. In a gien eniron%ent, which of the following refers to a populationnr. a. An! organis% s that lie together and eat in one place. ns. b. Seeral nu%bers of organis%s lie together in the sa%e place. nt. c. ifferent organis%s lie together in the sa%e place and in the sa%e ti%e nu. d. Group of organis%s of the sa%e ind liing in the sa%e place and the sa%e ti%e. n. "8. #h! plants considered as producersnw. a. Dlants produce fruit s that can be eaten b! ani%als. n$. b. Dlants produce root crops that suppl! carboh!drates to ani%als Dlants proide egetable for ani%als and hu%an consu%ption
of. 1. A far%er grew onl! one t!pe of onion. All of the onion plants died fro% the sa%e diseases. #hat can be said of this onion plant populationog. a. 9nl! a few plants were resistant to the diseases. oh. b. All of the onion plants were resistant to the diseases. oi. c. 7he onion plants were geneticall! different fro% each other. o0. d. 7he onion plants were geneticall! identical o. ". A far%er wants to propagate a good ariet! of a crop in awa! which %aintained all desirable traits. #hich of the following %ethods should be usedol. a. Self3pollination o%. b. )egetatie propagation on. c. Growing seeds produced fro% this ariet! oo. d. 'ross3pollinating this crop with another good ariet! and growing the seeds resulting fro% the cross. op. . A sper% unites with an egg cell to for% a =!gote. #hich process is taing placeo2. a. Dollination b. +ertili=ation c. Ase$ual reproduction d. )egetatie propagation or. /. In se$ual reproduction, what is the source of the genetic %aterial in a =!goteos. a. An egg cell onl! b. A sper% cell c. A pollen and a sper% cell d. An egg cell and a sper% cell ot. /. #hich species can produce offspring that are geneticall! different fro% their parentsou. a. A species that has few ariations o. b. A species that reproduces ase$uall! ow. c. A species that reproduces se$uall! o$. d. A species that co%petes with si%ilar species o!. . #hat is $"T a characteristic of se$ual reproductiono=. a. Ga%etes fro% two parents unite to for% a =!gote. pa. b. 9ffspring are geneticall! identical with the parent. pb. c. 9ffspring are different fro% their parents and sibling. pc. d. Genetic ariabilit! of offspring help to ensure surial in changing eniron%ental conditions. pd. 6. +rogs feed on insects. #hich t!pe of consu%er is the frog pe. a. Droducer b. +irst order consu%er c. Second order consu%er d. 7hird order consu%er pf. . #hich of the following is not a structure in a bacterial cell pg. a. cell wall b. cell %e%brane c. antibod! d. genetic %aterial ph. 4. ;ou can infer that antibiotics are not used to treat colds and the flu because pi. a. the! do not fight iruses p0. b. the! do not fight bacteria p. c. the! are used to preent colds and flu pl. d. the! cost too %uch to use the% on colds and the flu. p%. 8. All of the %e%bers of a particular species that lie in one area are called a &an( pn. a. bio%e b. population c. co%%unit! d. ecos!ste% po. /:. 7he si%plest grouping of %ore than one ind of organis% in the biosphere is pp. a. population b. a co%%unit! c. an ecos!ste% d. a species p2. /1.#hich of the following descriptions about the organi=ation of an ecos!ste% is correct pr. a. 'o%%unities %aes up species , which %aes up population. ps. b. Dopulations %ae up species, which %ae up species. pt. c. Species %aes up co%%unities, which %ae up population. pu. d. Species %ae up populations, which %aeup up co%%unities. p. /".All the interconnected feeding relationships in an ecos!ste% %ae up a food. pw. a.interaction b. chain c. networ d. web p$. /. #hat is the ter% for each step in the transfer of energ! and %atter with in biological co%%unit! p!. a. energ! path b. food web c. tropic leel d. food p!ra%id p=. //. An interaction in which one organis% captures and feeds on another organis% is called. 2a. a. co%petition b. s!%biosis c. %utualis% d. predation 2b. /. A s!%biosis in which both species benefit is 2c. a.co%%ensalis% b. %utualis% c. predation d. parasitis% 2d. /6. An ecos!ste% consist of 2e. a. a co%%unit! of organis% b. the soil water and weather c. energ! d. all of the aboe 2f. /. 7he specific ph!sical location in which a gien species lies is called its 2g. a. habitat b. co%%unit! c. abiotic factor d. cli%ate
2p. a. Grass b. rabbit c. snae d. haw 22. 1. 7he union of the ga%etes which is nown as fertili=ation, for%s a diploid cell called 2r. a. egg b. sper% c. e%br!o d. =!gote 2s. ". #hich structure eentuall! deelops into a seed2t. a. oar! b. oule c. sta%en d. petal 2u. . #hat is the %ale reproductie part of the flowering plant2. a. pistil b. sta%en c. petals d. oule 2w. /. #hich refers to the abilit! of the organis% to surie and reproduce in the particular eniron%ent2$. a. reproduction b. responsieness c. adaptation d. eolution 2!. . #hich part of the %icroscope holds two or %ore ob0ecties lenses which can be rotated to easil! change powera.reoling nosepiece b. stage c. rac stop d. diaphrag% 2=. 6. #hich of these cell organelles is not found inside the cellra. a. endoplas%ic reticulu% b. cilia c. golgi apparatus d. nucleus rb. . #hich of the following is not an ani%al cellrc. a. red blood cell b. %uscle cell c. sper% cell d. chloroplast rd. 4. #hich cell parts are present onl! in plant cell but not in ani%al cellre. a. cell wall and chloroplast b. chloroplast and c!toplas% rf. c. nucleus and cell %e%brane d. centrioles and %itochondria rg. 8. #hen !our finger touches a hot ob0ect, !ou tend to re%oe it 2uicl! without een thining about it. #hich of the following %echanis% is responsible for this responserh. a. nerous s!ste% refle$ b. spinal refle$ c. s!napses d. nere i%pulses ri. 6:. #hat part of the cell refers to a %e%brane3bound co%part%ent containing fluid and is found in the c!toplas%r0. a. l!soso%es b. riboso%es c. %itochondrion d. acuole r. rl. r%. rn. ro. rp. r2. rr. rs. rt. ru. r. rw. r$. r!. r=. sa. sb. sc. sd. se. sf. sg. sh. si. s0. s. sl. s%. sn. TA!E "F SPEC#F#CAT#"$S so. SEC"$% 'UARTER sp. SC#E$CE GRA%E 7 s2. sr.
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escribe the function of each part and how these parts wor together in an organis%. Identif! the different leels of organi=ation in an organis%. tp. Infer which %ode of reproduction is best suited for propagating certain plants
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