CSIR JRF NET Life Sciences June 2018 Model Question Paper (Mock Test 13) NET Life Sciences Old Papers NET Life Sciences Mock Test Welcome to NET Life Sciences (CSIR Mock Test 13) This Mock Test consists of 15 questions in MCQ format. At the end of the mock test, you have to click on the 'SUBMIT' button to see your Score and the Correct Answers. Please click on the 'NEXT' button to Start the Mock Test... 1) The first cell to be differentiated in the developing embryo is: Nerve cells Rods Epithelial cells RBC2) Temperature sensitive mutation are important in molecular biology because it helps in studying Genes required for development Genes for cold stress Genes for heat stress Genes necessary for the survival of the cell3) Which of the following vaccine does not provide lifetime protection? Polio Typhoid Smallpox Tetanus4) The special roots termed pneumatophores are present in: Mangroves Salt stress Epiphytes Parasites5) The rate of reaction for the first-order reaction for a radioisotope is 6.93 X 10-2 sec-1. What is the half-life of the radioisotope? 10 seconds 0 seconds 1000 seconds 100 seconds6) Morphologically similar species on interbreeding produced viable fertile offspring. They are considered as single species according to: Evolutionary species concept Biological species concept Morphological species concept Genetic species concept7) Extensive phyletic diversification of animals was observed in Mesozoic period Devonian period Cambrian period Silurian period8) Pearl oysters are obtained from the genus Pinctada Pila Mytilus Oysteria9) Chlorinated hydrocarbons effects ecosystem by Bioconcentration Biomagnifications Bioaccumulation Bioremediation10) In habitat ‘A’ pike cichlid fishes preferentially feeds on large adult guppies, so the guppies mature later and are of small size while in habitat ‘B’ killer fish feeds on small, juvenile guppies so here guppies mature early and are large sized. What will be the effect, if experimentally guppies for habitat ‘A’ are transferred to habitat ‘B’. No change would be seen Mature late but large size adults Mature late but small size adult Mature early but large size adults11) The efficiency of ATP synthesis is 40 % and enthalpy of the reaction ADP+iP ⇋ ATP is 8 K cal. If an individual consumes 2000 K cal, then the net ATP production from it would be 1000 40 100 250 12) Which one of the following statement is NOT true for the edge effect of two ecosystems? It has high biodiversity It has different species composition as compared to both sides Moving corridors are always harmful It has its distinct physical environment differing from both sides13) Natural selection against extreme phenotype is termed as Stabilizing selection Disruptive selection Diversifying selection Directional selection14) The type of sieve tube plastids in the order Caryophyllales is: Type-A Type-IIP Type-C Type-III P 15) In the ecosystem, the concept of entropy is used to explain: Energy flow in the trophic level Competition Photosynthesis efficiency Population growthYou have reached at the End of this Mock Test. Please Click 'SUBMIT' button to see your Score and the Correct Answers... More Online Mock Tests… Please follow the links below… CSIR JRF NETICMR JRFDBT BET JRFGATE - BTGATE XL Bioche.GATE XL Micro.GATE XL BotanyGATE XL ZoologyGATE XL Food Tec.GATE EY EcologyIIT JAM - BTIIT JAM - BLGS - BiologySET - BotanySET - ZoologyNEET Get our Updates on CSIR NET Life Sciences in your E-mail Inbox We will not spam your account… Enter your e-mail address Don’t forget to Activate your Subscription…. Please See Your E-Mail… Browse more in Easy Biology Class… Lecture NotesBiology PPTVideo TutorialsBiology MCQQuestion BankDifference betweenPractical AidsMock Tests (MCQ)Biology Exams If you like this post, Please COMMENT . . . . (below ↓) Please Share with your Friends, Relatives, Students and Colleagues… No related posts. Posted in CSIR / ICMR / DBT / ICAR, CSIR NET Mock Test, CSIR NET Model Questions, Mock (Practice) Tests and tagged CSIR JRf NET Life Sciences Mock Test 13, NET Life Sciences Mock Test, NET Life Sciences Model Questions, NET Life Sciences Practice Questions.