Zoology
- Match List I with List II :List I:A. Common coldB. HaemozoinC. Widal testD. AllergyList II:I. PlasmodiumII. TyphoidIII. RhinovirusesIV. Dust mitesChoose the correct answer from the options given below : Answer: 4. A-III, B-I, C-II, D-IV Common cold - rhinoviruses (A-III). Haemozoin - toxic pigment released from RBCs in malaria, Plasmodium (B... 1
- Match List I with List II :List I:A. TyphoidB. LeishmaniasisC. RingwormD. FilariasisList II:I. FungusII. NematodeIII. ProtozoaIV. BacteriaChoose the correct answer from the options given below : Answer: 3. A-IV, B-III, C-I, D-II Typhoid - bacterium Salmonella typhi (A-IV). Leishmaniasis - protozoan Leishmania (B-III). Ringworm - fung... 1
- Which of the following statements is incorrect? Answer: 4. Bio-reactors are used to produce small scale bacterial cultures. Bioreactors are large vessels (hundreds to thousands of litres)... 1
- The "Ti plasmid" of Agrobacterium tumefaciens stands for Answer: 4. Tumor inducing plasmid The Ti plasmid of Agrobacterium tumefaciens is the tumour-inducing plasmid. Part of it (T-DNA) enters plan... 1
- The following diagram showing restriction sites in E.coli cloning vector pBR322. Find the role of 'X' and 'Y' genes : Answer: 3. The gene 'X' is responsible for controlling the copy number of the linked DNA and 'Y' for protein involved in the replication of... 1
- Match List I with List II :List I:A. PterophyllumB. MyxineC. PristisD. ExocoetusList II:I. Hag fishII. Saw fishIII. Angel fishIV. Flying fishChoose the correct answer from the options given below : Answer: 3. A-III, B-I, C-II, D-IV Pterophyllum - angel fish (A-III). Myxine - hag fish (B-I). Pristis - saw fish (C-II). Exocoetus - flying... 1
- Consider the following statements :A. Annelids are true coelomatesB. Poriferans are pseudocoelomatesC. Aschelminthes are acoelomatesD. Platyhelminthes are pseudocoelomatesChoose the correct answer from the options given below : Answer: 3. A only Key idea: coelom type of each phylum. A: Annelids are true coelomates (metameric segmentation) - correct. B: Poriferans ar... 1
- Which one of the following factors will not affect the Hardy-Weinberg equilibrium? Answer: 1. Constant gene pool Key idea: Hardy-Weinberg equilibrium means allele frequencies stay constant from generation to generation. Fac... 1
- Given below are some stages of human evolution. Arrange them in correct sequence. (Past to Recent)A. Homo habilisB. Homo sapiensC. Homo neanderthalensisD. Homo erectusChoose the correct sequence of human evolution from the options given below : Answer: 1. A-D-C-B Key idea: order of appearance of the genus Homo. Homo habilis (about 2 mya) → Homo erectus (about 1.5 mya) → Homo neander... 1
- Match List I with List II :List I:A. Expiratory capacityB. Functional residual capacityC. Vital capacityD. Inspiratory capacityList II:I. Expiratory reserve volume + Tidal volume + Inspiratory reserve volumeII. Tidal volume + Expiratory reserve volum… Answer: 2. A-II, B-IV, C-I, D-III Key idea: capacities are sums of volumes. Expiratory capacity = TV + ERV (A-II). Functional residual capac... 1
- Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli? Answer: 3. High pO₂ and Lesser H^+ concentration Key idea: oxygen binding is favoured in the alveoli. Alveoli have high pO₂, low pCO₂, lower... 1
- Which of the following is not a steroid hormone? Answer: 1. Glucagon Key idea: steroid hormones are made from cholesterol. Cortisol, testosterone and progesterone are steroids. Glucagon, fr... 1
- Given below are two statements :Statement I : In the nephron, the descending limb of loop of Henle is impermeable to water and permeable to electrolytes.Statement II : The proximal convoluted tubule is lined by simple columnar brush border epithelium… Answer: 3. Both Statement I and Statement II are false Statement I is false. The descending limb of Henle's loop is permeable to water and a... 1
- Match List I with List II :List I:A. PonsB. HypothalamusC. MedullaD. CerebellumList II:I. Provides additional space for Neurons, regulates posture and balance.II. Controls respiration and gastric secretions.III. Connects different regions of the brai… Answer: 3. A-III, B-IV, C-II, D-I Pons - fibre tracts that connect different regions of the brain (A-III). Hypothalamus - contains neurosecr... 1
- Match List I with List II :List I:A. Fibrous jointsB. Cartilaginous jointsC. Hinge jointsD. Ball and socket jointsList II:I. Adjacent vertebrae, limited movementII. Humerus and Pectoral girdle, rotational movementIII. Skull, don't allow any movementI… Answer: 1. A-III, B-I, C-IV, D-II Fibrous joints (skull sutures) allow no movement (A-III). Cartilaginous joints between adjacent vertebrae... 1
- Which of the following is not a natural/traditional contraceptive method? Answer: 1. Vaults Natural or traditional methods are periodic abstinence, coitus interruptus (withdrawal) and lactational amenorrhea; they a... 1
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :Assertion A : Breast-feeding during initial period of infant growth is recommended by doctors for bringing a healthy baby.Reason R : Colostrum cont… Answer: 2. Both A and R are correct and R is the correct explanation of A. Key idea: colostrum is the first milk, rich in antibodies (IgA).... 1
- In both sexes of cockroach, a pair of jointed filamentous structures called anal cerci are present on : Answer: 3. 10^th segment The cockroach abdomen has 10 segments. Anal cerci, a pair of jointed filamentous structures, are present on the 10t... 1
- Match List I with List II :List I:A. CocaineB. HeroinC. MorphineD. MarijuanaList II:I. Effective sedative in surgeryII. Cannabis sativaIII. ErythroxylumIV. Papaver somniferumChoose the correct answer from the options given below : Answer: 1. A-III, B-IV, C-I, D-II Cocaine comes from Erythroxylum coca (A-III). Heroin (smack) is made from morphine, which comes from Papav... 1
- Match List I with List II :List I:A. α-1 antitrypsinB. Cry IAbC. Cry IAcD. Enzyme replacement therapyList II:I. Cotton bollwormII. ADA deficiencyIII. EmphysemaIV. Corn borerChoose the correct answer from the options given below : Answer: 4. A-III, B-IV, C-I, D-II Key idea: link each biotech product or therapy with its use. α-1 antitrypsin - treats emphysema (III). Cry... 1
- Match List I with List II :List I:A. PleurobrachiaB. RadulaC. StomochordD. Air bladderList II:I. MolluscaII. CtenophoraIII. OsteichthyesIV. HemichordataChoose the correct answer from the options given below : Answer: 3. A-II, B-I, C-IV, D-III Key idea: match each term with its phylum or class. Pleurobrachia (sea walnut) - Ctenophora (A-II). Radula... 1
- The flippers of the Penguins and Dolphins are the example of the Answer: 4. Convergent evolution Key idea: unrelated groups that evolve similar structures for similar functions show convergent evolution. P... 1
- Following are the stages of pathway for conduction of an action potential through the heart:A. AV bundleB. Purkinje fibresC. AV nodeD. Bundle branchesE. SA nodeChoose the correct sequence of pathway from the options given below : Answer: 2. E-C-A-D-B Key idea: the impulse follows the heart's conducting system in a fixed order. SA node (pacemaker, E) → AV node (C) → AV... 1
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :Assertion A : FSH acts upon ovarian follicles in female and Leydig cells in male.Reason R : Growing ovarian follicles secrete estrogen in female wh… Answer: 1. A is false but R is true Key idea: check the target cells of FSH. In females FSH acts on ovarian follicles. In males FSH acts on... 1