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. Temperature sensitive mutation are important in molecular biology because it helps in studying Genes for heat stress Genes for cold stress Genes required for development Genes necessary for the survival of the cell2. Pearl oysters are obtained from the genus Pinctada Oysteria Mytilus Pila3. The type of sieve tube plastids in the order Caryophyllales is: Type-C Type-IIP Type-III P Type-A4. Chlorinated hydrocarbons effects ecosystem by Biomagnifications Bioremediation Bioconcentration Bioaccumulation5. The first cell to be differentiated in the developing embryo is: Rods Nerve cells Epithelial cells RBC6. Extensive phyletic diversification of animals was observed in Mesozoic period Cambrian period Silurian period Devonian period7. Which one of the following statement is NOT true for the edge effect of two ecosystems? It has its distinct physical environment differing from both sides Moving corridors are always harmful It has different species composition as compared to both sides It has high biodiversity8. 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 100 250 1000 409. Which of the following vaccine does not provide lifetime protection? Tetanus Smallpox Typhoid Polio10. Natural selection against extreme phenotype is termed as Disruptive selection Directional selection Diversifying selection Stabilizing selection11. The special roots termed pneumatophores are present in: Epiphytes Mangroves Salt stress Parasites12. 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? 100 seconds 10 seconds 0 seconds 1000 seconds13. 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’. Mature early but large size adults Mature late but small size adult No change would be seen Mature late but large size adults14. Morphologically similar species on interbreeding produced viable fertile offspring. They are considered as single species according to: Evolutionary species concept Genetic species concept Morphological species concept Biological species concept15. In the ecosystem, the concept of entropy is used to explain: Population growth Photosynthesis efficiency Energy flow in the trophic level CompetitionYou 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.