ich of the following serve as communicating junctions between the cells? ‘Tight junctions Hemidesmosomes (©) Gap junctions D) Desmosomes An unfertilized human egg contains (A) Two X chromosomes ” B) One X and One Y chromosome 4) One X chromosome only i One Y chromosome only evolution occurring at a genetic level is called Macroevolution - is the role of small nuclear RNAS in protein synthesis? ——g.» It translates genetic code to a specific amino acid ~ It modifies mRNA molecules prior to protein synthesis It provides a genetic blueprint for the protein Tt catalyzes the process IP.T.0. P 27/26. Organ of defense in protozoans is (A) Statocysts (B) Trichocysts (C) Otocysts (D) Nematocysts “ -. Insertion or deletion mutations are (A) Transition mutation (B) Frame-shift mutation (C) Transverse mutation (D) None of these 8. Platyhelminthes are also known as (A) Roundworms (B) Flatworms 4 (©) Barthworms AL (D) None of these 9. Pedigree analysis is useful for (A) Study of inheritance when arranged mating is not possible (B) Study of sex linked inheritance in man ~ = ie (C)_ Study of Mendelian disorders. in man ~ AY) | (D) All of these — KE 10. In some animal species, a membrane called tapetum lucidum is found at the back of eye, behind the retina what is the function of this layer ? (A) Ibis the coloured portion of eye (B) It gives night vision to the animals ~ (©) Its transparent jelly-like fluid (D) Iris the area in which the optic nerve attaches 1 9083/RRR /27 4 (1700) a lesEE 11, Which of the following cells do not show phagocytic property (A) Neutrophils (B) Basophils (C) Monocytes (D) Macrophages Complete metamorphosis occurs in (A) Moths and mosquitoes ~ (B) Grasshopper (©) Bed-bug (D) Silver-fish 13. Recommended disinfectant specific to killing to Corona Virus is (A) Sodium Hypochlorite ~ ®B) Lyzol © Phenyl (D) Carbolic acid 14. In monoclonal antibody technology, tumor cells that can replicate endlessly are fused with mammalian cells that produce an antibody. The result of this cell fusion is a (A) Hybridoma ~ (8) Myeloma (©) Carcinoma ~ (D) Lymphoma 15. Which of the following is an example of an organ-specifi ic autoimmune disease? (A) Psoriasis (B) Rheumatoid arthritis ©) Addison disease ©) Myasthenia gravis 8083 / RAR /27 (1700) 2 ae 27/3 ts21. The first body segment of earthworm is called (A) Protostome (B) Peristome~~ (© Peristomium (D) Protostomium 22. Which one of the following is the closest relative to man? (A) Monkeys (B) Gorilla - (©) Gibbons (D) Chimpanzee 23. The action potential while the propagation of a nerve impulse is due to the movement of (A)_ Kt ions from intracellular to extracellular fluid (B) Kt ions from extracellular to intracellular fluid (C) Na® ions from intracellular to extracellular fluid (D) Na* ions from extracellular to intracellular fluid Tn amphibians, the organ of Jacobson is meant for the function to (A) Sense - (B) Taste (© Sound (D) Smell Which of the following scientists Proposed the theory of acquired characteristics? (A) Fisher (8) Lamarek (C) Mendel (DP) Weisman 8083/ RR / 27 (1700 (ar (PTO. 27/4 eei. While performing characterization of antigens by electrophoresis and immunofixation, the reaction of antigen and antibody relies on/in (A) Streptavidin - Plastic microtiter plates ktonic inhabitants of the open ocean lly buried, filter feeding in coastal waters buried, filter feeding in a freshwater stream or river d to a host fish ~ the lighter-coloured variety of peppered moth (Biston betularia) to its darker (Biston carbonaria) is due to Bony fishes Cartilaginous fishes Fanner 9 IPTO.a 43. 45, If you suddenly observe linkage between two genes that are present in two chromosomes, this can be due to (A)_ Inversion (B) Coupling (©) Non-homologous end joining (D) Translocation Enzymes are proteins in nature, select which of the following enzyme is not proteinaceous in nature (A). Urease B) Peptidase (©) Ribozyme (D) Phosphatase Metamerically segmented worms are included in the phylum (A) Coelentreta (B) Nematoda (©) Mollusca (D) Annelida ~ Cancer cells are more easily damaged by radiations than normal cells because they are (A) Starved of nutrition B) Different in structure (C) Non-dividing (D) Rapidly dividing ~ Which of the following is not as a consequence of global warming? (A) Rising sea level (B) Increased agricultural productivity worldwide {C) Worsening health effects (D) Increased storm frequency and intensity 9083 / ARR /27 "1 PTO (1700) ia” © 53. Sponges are (A) Diploblastic (B)_ Monoblastic (©) Triploblastic (D) Tetrablastic 52, Where are Haversian canals found? (A) Vili (B) Medula (C) Humerus (D) None of the above ‘53. The organelle which act like ‘Traffic Police’ of cell is (A) Mitochondria B) Nucleus (©) Endoplasmic reticulum D) Golgi bodies 54, Which among the following is based on antigen-antibody interaction? (A) PCR (B) Electrophoresis (©) ELISA @) All of these ~ 55. Mesoderm gives rise to all the structures except (A) Gonads youre ®) Circulatory system Se (©) Muscular system wr ae @) Nervous system a 9083/RRR /27 (1700) 13 [P.T.0 eeecological pyramid is always upright? Pyramid of biomass Pyramid of energy - Pyramid of carbon Pyramid of number | take place during which phase of Interphase? following is not a true amphibian? (PTO.is required is needed to move a chromosome from equator to the pole? 10-1 dynes : . 10-17 dynes 10"! dynes 10°15 dynes lich of the following does not belong to factors affecting the Hardy Weinberg principle” life cycle of Ascaris, the infective stage is ‘Third larva (PT.ion of malpighian tubules in cockroach is Respiration Excretion, osmoregulation’ and, homeostasis ~ ) Secretion of digestive enzymes. applications in databases containing information on DNA base sequences can infectious diseases ¢ 3D protein structures a genome homologous sequences in different species | Wide distribution with high population ) Narrow distribution with high population, (© Narrow distribution with low population ©) Wide distribution with low population J RAR / 27 19 IP-T.091. Chordates are distinguished from non-chordates by the presence of (A) (B) © @) Brain Dorsal tubular nerve cord Dorsal nerve cord Ventral nerve cord 92. Which year did the Forest Conservation Act Pass? A) @B) © ©) 1986 1990 1980 1988 93, The degenerate features of echinoderms is (A) @) © @) 94, ‘The phenomenon of transfer of causatiy Lack of head Reduced circulatory system Absence of excretory system Alll the above 1 agents of diseases from animal to human beings is called (a) () © ) Infestation Zoonosis Infection Circulation 95, Foetal aleohol syndrome results in (A) @) ©) @) Blindness Attention deficit hyperactivity disorder (ADHD) Poor sleep patterns Changes in brain structure and behavioural problems at [P.O 9083/ RAR /27 (1700)96. 97, 98. 100, In which class of coclenterata the polyp and medusa both are found in one anima}? (A) Hydrozoa (B) Scyphozoa ~~ (C) Anthozoa (D) None of these The silkworm larva ceases to eat and begins spinning silk all over its body (A) From inside to outside (B) From outside to inside (©) Ina random motion @) All the above Salted meat of pig is known as (A) Beef (B) Bacon © Chicken @) Pork Im human beings number of pairs of somatic chromosomes in a cell are (A) 22 @®) 23— (C) 20 (D) 21 All of the following siatement are corect with referencs‘to linea except (A) Labeo is a fresh water fish (B) Osteichthyes have air bladder (C) Pterophyllum is a dog fish ~ (D) Sexes are separate 9083/RRR/27 22 (1700)