1. Given the gene sequence ABCDE crossing over should occur most frequently between : 1) A – E 2) A – D 3) A – C 4) A – B 2. Can a male be a carrier for a sex linked disease ? 1) Yes, if the mother & father of the male were carriers
1. The microscope in which the object is illuminated but the field surrounding it appears black is : 1) fluoroscence microscope 2) phasecontrast microscope 3) compound microscope 4) confocal microscope 2. Which of the following statements is INCORRECT regarding confocal microscope? 1) scans one plane of a specimen at a time 2) obtains three dimensional
1. Chloride shift is essential for transport of (A) CO2 and O2 (B) N2 (C) CO2 only (D) O2 only 2. The snakes and birds are mainly (A) ammonotelic (B) amiotelic (C) ureotelic (D) uricotelic 3. The number of RBCs in man increases if someone lives at higher altitude because (A) there is more oxygen
1. Schizont stage of Plasmodium vivax in man is found in (A) Erythrocytes (B) erythrocytes and liver cells (C) liver cells only (D) erythrocytes, liver cells and spleen 2. Evolutionary sequence of canal system in sponges is (A) sycon—ascon—leucon (B) leucon-sycon—ascon (C) ascon—sycon-leucon (D) sycon-leucon—ascon 3. Gonads of Obelia occur (A) in hydrula stage (B)
1. Binomial nomenciature was introduced by: A. Aristotle B. Carlous Linnaeus C. John Ray D. E.Haeckel 2. Cells secreting spongin are: A. Spongioblasts B. Choanocytes C. Pinacocytes D. Thesocytes 3. Reproductive stage of Obelia Is: A. Medusa B. Polyp C. Zooid D. Corals 4. How many suckers are found in Taenia? A. 2 B. 5
1. The human hind brain comprises three parts, one of which is a. Cerebellum b. Hypothalamus c. Olfactory d. Corpus callosum 2. The hormones that can easily pass through the cell membrane of the target cell and bind to a receptor (mostly in the nucleus) a. Somatostatin, oxytocin b. Cortisol, testosterone c. Insulin, Growth hormone
1. Which of the following element plays an important role in nitrogen fixation ? (1) Mo (2) Mn (3) Zn (4) Cu 2. Name the multiple degradative strain “Super bug” created by Chakrabarty and co-workers : (1) Pseudomonas aeruginosa (2) Bacillus subtilis (3) Pseudomonas putida (4) Bacillus cereus A 3. Which committee should be constituted
1. Which one of the following pairs represents physical mutagens ? (1) X-rays and ultraviolet rays (2) a-rays and alkylating agents (3) Base analogue and acridine dye (4) Neutrons and Hydroxylamine 2. In which one of the following combinations, the compounds are arranged in ascending order based on their molecular weights ? (1) DNA, RNA,
1. Which of the following is a repressor of gibberellin signalling ? (1) DELLA (2) AUX (3) HPT (4) TTR1 2. Lampbrush chromosomes are seen in which stage of cell division ? (1) Leptotene (2) Diplotene (3) Diakinesis (4) Zygotene 3. Which of the following culture technique is most suitable for the production of secondary
1. Which one of these is an epigenetic cause of somaclonal variation ? (1) Chromosomal abrasion (2) Point mutations (3) Transposable elements activation (4) Methylation / demethylation 2. According to stability statistics, a genotype exhibiting small magnitude of among environmental variance will have (1) Type I stability (2) Type II stability (3) Type III stability
