AIPMT 2010 · Biology

AIPMT 2010 Biology Questions with Solutions

The AIPMT 2010 paper had 60 Biology questions from 22 chapters. By section: 34 Botany and 26 Zoology.

Principles of Inheritance and Variation and Structural Organisation in Animals had the most questions (6 each), followed by Body Fluids and Circulation and Microbes in Human Welfare with 5 each.

All 60 questions are listed below; their answers and explanations are in Premium.

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Biology questions: 60
Chapters covered: 22
Solved free here: 0 of 60
Easy / Medium / Hard: 21 / 25 / 14

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Chapter-wise: AIPMT 2010 Biology

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All 60 AIPMT 2010 Biology questions

In paper order. Try each one, then open the answer.

Question 1 (AIPMT 2010, Q61)
The Living WorldBotanyEasy
Which one of the following is monoecious?
1. Option A: Date palm
2. Option B: Marchantia
3. Option C: Cycas
4. Option D: Pinus
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Question 2 (AIPMT 2010, Q62)
Body Fluids and CirculationZoologyEasy
Jaundice is disorder of :
1. Option A: Circulatory system
2. Option B: Excretory system
3. Option C: Skin and eyes
4. Option D: Digestive system
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Question 3 (AIPMT 2010, Q63)
Principles of Inheritance and VariationBotanyMedium
Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in the statements. Statements: (A) Wings of butterfly and birds look alike and are the results of _____ (i) _____ evolution. (B) Miller showed that $CH_4$ , $H_2$ , $NH_3$ and _____ (i) _____, when exposed to electric discharge in a flask resulted in formation of _____ (ii) _____. (C) Vermiform appendix is a _____ (i) _____ organ and an _____ (ii) _____ evidence of evolution. (D) According to Darwin evolution took place due to _____ (i) _____ and _____ (ii) _____ of the fittest.
1. Option A: (C) - (i) vestigial, (ii) anatomical ; (D) - (i) mutations, (ii) multiplication
2. Option B: (D) - (i) small variation, (ii) survival ; (A) - (i) convergent
3. Option C: (A) - (i) convergent ; (B) - (i) oxygen, (ii) nucleosides
4. Option D: (B) - (i) water vapour, (ii) amino acids ; (C) - (i) rudimentary, (ii) anatomical
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Question 4 (AIPMT 2010, Q64)
Molecular Basis of InheritanceBotanyEasy
In eukaryotic cell transcription, RNA splicing and RNA capping take place inside the :
1. Option A: ER
2. Option B: Ribosomes
3. Option C: Nucleus
4. Option D: Dictyosomes
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Question 5 (AIPMT 2010, Q65)
Chemical Coordination and IntegrationZoologyMedium
Select the correct matching of a hormone, its source and function.
1. Option A: 1
2. Option B: 2
3. Option C: 3
4. Option D: 4
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Question 6 (AIPMT 2010, Q66)
Principles of Inheritance and VariationBotanyEasy
A cross in which an organism showing a dominant phenotype is crossed with the recessive parent in order to know its genotype is called :
1. Option A: Dihybrid cross
2. Option B: Monohybrid cross
3. Option C: Back cross
4. Option D: Test cross
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Question 7 (AIPMT 2010, Q67)
Human Health and DiseaseZoologyMedium
A person suffering from a disease caused by $Plasmodium$ , experiences recurring chill and fever at the time when :
1. Option A: The microgametocytes and megagametocytes are being destroyed by the WBCs
2. Option B: The sporozoites released from RBCs are being rapidly killed and broken down inside spleen
3. Option C: The trophozoites reach maximum growth and give out certain toxins
4. Option D: The parasite after rapid multiplication inside RBCs ruptures them, releasing the stage to enter fresh RBCs
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Question 8 (AIPMT 2010, Q68)
Microbes in Human WelfareBotanyMedium
Select the correct combination of the statements (a-d) regarding the characteristics of certain organisms. (a) Methanogens are archaebacteria which produce methane in marshy areas. (b) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen. (c) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose. (d) Mycoplasma lack a cell wall and can survive without oxygen. The correct statements are :
1. Option A: (a), (b), (d)
2. Option B: (b), (c)
3. Option C: (a), (b), (c)
4. Option D: (b), (c), (d)
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Question 9 (AIPMT 2010, Q69)
Photosynthesis in Higher PlantsBotanyHard
Read the following four statements A, B, C and D and select the right option having both correct statements. (A) Z-scheme of light reaction takes place in presence of PSI only. (B) Only PSI is functional in cyclic photophosphorylation. (C) Cyclic photophosphorylation results in synthesis of ATP and $NADPH_2$ . (D) Stroma lamellae lack PSII as well as NADP reductase. The correct statements are :
1. Option A: C and D
2. Option B: B and D
3. Option C: A and B
4. Option D: B and C
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Question 10 (AIPMT 2010, Q70)
Human Health and DiseaseZoologyEasy
Which one of the following techniques is safest for the detection of cancers?
1. Option A: Histopathological studies
2. Option B: Magnetic resonance imaging (MRI)
3. Option C: Radiography (X-ray)
4. Option D: Computed tomography (CT)
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Question 11 (AIPMT 2010, Q71)
Neural Control and CoordinationZoologyMedium
Select the answer with correct matching of the structure, its location and function.
1. Option A: 1
2. Option B: 2
3. Option C: 3
4. Option D: 4
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Question 12 (AIPMT 2010, Q72)
Cell: The Unit of LifeBotanyHard
Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given with. Components: (i) Cristae of mitochondria (ii) Inner membrane of mitochondria (iii) Cytoplasm (iv) Smooth endoplasmic reticulum (v) Rough endoplasmic reticulum (vi) Mitochondrial matrix (vii) Cell vacuole (viii) Nucleus The correct components are :
1. Option A: A-(v), B-(i), C-(iii), D-(ii)
2. Option B: A-(v), B-(iv), C-(viii), D-(iii)
3. Option C: A-(i), B-(iv), C-(viii), D-(vi)
4. Option D: A-(vi), B-(v), C-(iv), D-(vii)
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Question 13 (AIPMT 2010, Q73)
Human ReproductionZoologyMedium
Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release of :
1. Option A: Relaxin from placenta
2. Option B: Estrogen from placenta
3. Option C: Oxytocin from maternal pituitary
4. Option D: Oxytocin from foetal pituitary
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Question 14 (AIPMT 2010, Q74)
Structural Organisation in AnimalsZoologyHard
Consider the following four statements A, B, C and D and select the right option for two correct statements. (A) In vexillary aestivation, the large posterior petal is called standard, two lateral ones are wings and two small anterior petals are termed keel. (B) The floral formula for Liliaceae is: $\oplus \; ⚥ \; P_{3+3} \; A_{3+3} \; G_{\underline{3}}$ (C) In pea flower the stamens are monadelphous. (D) The floral formula for Solanaceae is: $\oplus \; ⚥ \; K_{(5)} \; C_{(3)} \; G_{(2)}$ The correct statements are :
1. Option A: (C) and (D)
2. Option B: (A) and (C)
3. Option C: (A) and (B)
4. Option D: (B) and (C)
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Question 15 (AIPMT 2010, Q75)
EvolutionZoologyEasy
The most apparent change during the evolutionary history of $Homo\ sapiens$ is traced in :
1. Option A: Remarkable increase in brain size
2. Option B: Loss of body hair
3. Option C: Walking upright
4. Option D: Shortening of the jaws
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Question 16 (AIPMT 2010, Q76)
Structural Organisation in AnimalsZoologyEasy
Transport of food material in higher plants takes place through :
1. Option A: Sieve elements
2. Option B: Companion cells
3. Option C: Transfusion cells
4. Option D: Tracheids
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Question 17 (AIPMT 2010, Q77)
The Living WorldBotanyMedium
Crocodile and Penguin are similar to Whale and Dogfish in which one of the following features?
1. Option A: Have gill slits at some stage
2. Option B: Possess a solid single stranded central nervous system
3. Option C: Lay eggs and guard them till they hatch
4. Option D: Possess bony skeleton
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Question 18 (AIPMT 2010, Q78)
EcosystemBotanyEasy
The Indian Rhinoceros is a natural inhabitant of which one of the Indian states?
1. Option A: Assam
2. Option B: Uttarakhand
3. Option C: Uttar Pradesh
4. Option D: Himachal Pradesh
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Question 19 (AIPMT 2010, Q79)
Principles of Inheritance and VariationBotanyMedium
In Antirrhinum, two plants with pink flowers were hybridized. The F1 plants produced red, pink and white flowers in the proportion of 1 red : 2 pink : 1 white. What could be the genotype of the two plants used for hybridization? Red flower colour is determined by $RR$ , and white by $rr$ genes.
1. Option A: rr
2. Option B: rrr
3. Option C: RR
4. Option D: Rr
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Question 20 (AIPMT 2010, Q80)
Body Fluids and CirculationZoologyEasy
Fastest distribution of some injectable material / medicine and with no risk of any kind can be achieved by injecting it into the :
1. Option A: Lymph vessels
2. Option B: Muscles
3. Option C: Arteries
4. Option D: Veins
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Question 21 (AIPMT 2010, Q81)
Microbes in Human WelfareBotanyEasy
Which one of the following is most appropriately defined?
1. Option A: Parasite is an organism which always lives inside the body of other organism and may kill it.
2. Option B: Host is an organism which provides food to another organism.
3. Option C: Amensalism is a relationship in which one species is benefited whereas the other is unaffected.
4. Option D: Predator is an organism that catches and kills other organism for food.
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Question 22 (AIPMT 2010, Q82)
Photosynthesis in Higher PlantsBotanyMedium
Kranz anatomy is one of the characteristics of the leaves of :
1. Option A: Mustard
2. Option B: Potato
3. Option C: Wheat
4. Option D: Sugarcane
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Question 23 (AIPMT 2010, Q83)
Principles of Inheritance and VariationBotanyMedium
The fruit fly $Drosophila\ melanogaster$ was found to be very suitable for experimental verification of chromosomal theory of inheritance by Morgan and his colleagues because :
1. Option A: It completes life cycle in about two weeks
2. Option B: It reproduces parthenogenetically
3. Option C: A single mating produces two young flies
4. Option D: Smaller female is easily recognisable from larger male
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Question 24 (AIPMT 2010, Q84)
Microbes in Human WelfareBotanyMedium
Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation?
1. Option A: Nitrogenase is insensitive to oxygen
2. Option B: Leghaemoglobin scavenges oxygen and is pinkish in colour
3. Option C: Nodules act as sites for nitrogen fixation
4. Option D: The enzyme nitrogenase catalyses the conversion of atmospheric $N_2$ to $NH_3$
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Question 25 (AIPMT 2010, Q85)
Human Health and DiseaseZoologyMedium
Which one of the following cannot be used for preparation of vaccines against plague?
1. Option A: Heat-killed suspensions of virulent bacteria
2. Option B: Formalin-inactivated suspensions of virulent bacteria
3. Option C: Avirulent live bacteria
4. Option D: Synthetic capsular polysaccharide material
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Question 26 (AIPMT 2010, Q86)
Plant Growth and DevelopmentBotanyEasy
One of the commonly used plant growth hormones in tea plantations is :
1. Option A: Indole-3-acetic acid
2. Option B: Ethylene
3. Option C: Abscisic acid
4. Option D: Zeatin
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Question 27 (AIPMT 2010, Q87)
Body Fluids and CirculationZoologyEasy
The haemoglobin content per 100 ml of blood of a normal healthy adult is :
1. Option A: 12 - 16 g
2. Option B: 5 - 11 g
3. Option C: 25 - 30 g
4. Option D: 17 - 20 g
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Question 28 (AIPMT 2010, Q88)
Microbes in Human WelfareBotanyEasy
Black (stem) rust of wheat is caused by :
1. Option A: Xanthomonas oryzae
2. Option B: Alternaria solani
3. Option C: Ustilago nuda
4. Option D: Puccinia graminis
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Question 29 (AIPMT 2010, Q89)
Human ReproductionZoologyMedium
In human female the blastocyst :
1. Option A: Gets implanted in endometrium by the trophoblast cells
2. Option B: Forms placenta even before implantation
3. Option C: Gets implanted into uterus 3 days after ovulation
4. Option D: Gets nutrition from uterine endometrial secretion only after implantation
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Question 30 (AIPMT 2010, Q90)
Biotechnology: Principles and ProcessesZoologyEasy
Which of the following are used in gene cloning?
1. Option A: Plasmids
2. Option B: Nucleoids
3. Option C: Lomasomes
4. Option D: Mesosomes
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Question 31 (AIPMT 2010, Q91)
Principles of Inheritance and VariationBotanyMedium
ABO blood grouping is controlled by gene $I$ which has three alleles and show co-dominance. There are six genotypes. How many phenotypes in all are possible?
1. Option A: Five
2. Option B: Six
3. Option C: Three
4. Option D: Four
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Question 32 (AIPMT 2010, Q92)
Body Fluids and CirculationZoologyHard
Given below are four statements (a-d) regarding human blood circulatory system. (a) Arteries are thick-walled and have narrow lumen as compared to veins. (b) Angina is acute chest pain when the blood circulation to the brain is reduced. (c) Persons with blood group AB can donate blood to any person with any blood group under ABO system. (d) Calcium ions play a very important role in blood clotting. Which two of the above statements are correct?
1. Option A: (c) and (d)
2. Option B: (a) and (d)
3. Option C: (a) and (b)
4. Option D: (b) and (c)
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Question 33 (AIPMT 2010, Q93)
Structural Organisation in AnimalsZoologyEasy
Vegetative propagation in $Pistia$ occurs by :
1. Option A: Sucker
2. Option B: Stolon
3. Option C: Offset
4. Option D: Runner
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Question 34 (AIPMT 2010, Q94)
Structural Organisation in AnimalsZoologyMedium
Which one of the following pairs of structure is correctly matched with their correct description?
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 35 (AIPMT 2010, Q95)
Human ReproductionZoologyEasy
Secretions from which one of the following are rich in fructose, calcium and some enzymes?
1. Option A: Salivary glands
2. Option B: Male accessory glands
3. Option C: Liver
4. Option D: Pancreas
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Question 36 (AIPMT 2010, Q96)
EcosystemBotanyMedium
When domestic sewage mixes with river water :
1. Option A: The river water is still suitable for drinking as impurities only about 0.1%
2. Option B: Small animals like rats will die after drinking river water
3. Option C: The increased microbial activity releases micro-nutrients such as iron
4. Option D: The increased microbial activity uses up dissolved oxygen
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Question 37 (AIPMT 2010, Q97)
BiomoleculesZoologyMedium
Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
1. Option A: Most enzymes are proteins but some are lipids
2. Option B: Enzymes require optimum pH for maximal activity
3. Option C: Enzymes are denatured at high temperatures but in certain exceptional organisms they are effective even at temperatures $80 - 90^{\circ}C$
4. Option D: Enzymes are highly specific
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Question 38 (AIPMT 2010, Q98)
Plant Growth and DevelopmentBotanyEasy
Root development is promoted by :
1. Option A: Ethylene
2. Option B: Abscisic acid
3. Option C: Auxin
4. Option D: Gibberellin
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Question 39 (AIPMT 2010, Q99)
Excretory Products and Their EliminationZoologyMedium
In which one of the following organisms its excretory organs are correctly stated?
1. Option A: Frog — Kidneys, skin and buccal epithelium
2. Option B: Humans — Kidneys, sebaceous glands and tear glands
3. Option C: Earthworm — Pharyngeal, integumentary and septal nephridia
4. Option D: Cockroach — Malpighian tubules and enteric caeca
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Question 40 (AIPMT 2010, Q100)
Body Fluids and CirculationZoologyHard
If for some reason the parietal cells of the gut epithelium become partially nonfunctional, what is likely to happen?
1. Option A: Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones
2. Option B: The pancreatic enzymes and specially the trypsin and lipase will not work efficiently
3. Option C: The pH of stomach will fall abruptly
4. Option D: Steapsin will be more effective
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Question 41 (AIPMT 2010, Q101)
Biotechnology and Its ApplicationsZoologyEasy
Which one of the following is now being commercially produced by biotechnological procedures?
1. Option A: Insulin
2. Option B: Nicotine
3. Option C: Morphine
4. Option D: Quinine
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Question 42 (AIPMT 2010, Q102)
BiomoleculesZoologyHard
The figure given below shows the conversion of a substrate into product by an enzyme. In which one of the four options (1-4) the components of reaction labelled as A, B, C and D are identified correctly?
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 43 (AIPMT 2010, Q103)
Cell: The Unit of LifeBotanyEasy
An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called :
1. Option A: Cytoskeleton
2. Option B: Thylakoid
3. Option C: Endoplasmic reticulum
4. Option D: Plasmalemma
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Question 44 (AIPMT 2010, Q104)
Structural Organisation in AnimalsZoologyHard
Given below is the diagram of a stomatal apparatus. In which of the following all the four parts labelled as A, B, C and D are correctly identified?
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 45 (AIPMT 2010, Q105)
Molecular Basis of InheritanceBotanyMedium
Which one of the following statements about the particular entity is true?
1. Option A: DNA consists of a core of eight histones
2. Option B: Centromere is found in animal cells, which produces aster during cell division
3. Option C: The gene for producing insulin is present in every body cell
4. Option D: Nucleosome is formed of nucleotides
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Question 46 (AIPMT 2010, Q106)
Photosynthesis in Higher PlantsBotanyHard
Study the pathway given below. In which of the following options correct words for all the three blanks A, B and C are indicated.
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 47 (AIPMT 2010, Q107)
Photosynthesis in Higher PlantsBotanyEasy
Which one of the following is a xerophytic plant in which the stem is modified into a flat, green and succulent structure?
1. Option A: Acacia
2. Option B: Opuntia
3. Option C: Casuarina
4. Option D: Hydrilla
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Question 48 (AIPMT 2010, Q108)
Plant KingdomBotanyHard
Examine the figures A, B, C and D. In which one of the four options all the items A, B, C and D are correct?
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 49 (AIPMT 2010, Q109)
Molecular Basis of InheritanceBotanyMedium
The lac operon consists of :
1. Option A: Three regulatory genes and three structural genes
2. Option B: Four regulatory genes only
3. Option C: One regulatory gene and three structural genes
4. Option D: Two regulatory genes and two structural genes
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Question 50 (AIPMT 2010, Q110)
Biological ClassificationBotanyHard
Given below is the diagram of a bacteriophage. In which one of the options all the four parts A, B, C and D are correct?
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 51 (AIPMT 2010, Q111)
Structural Organisation in AnimalsZoologyMedium
Which one of the following is the correct description of a certain part of a normal human skeleton?
1. Option A: Glenoid cavity is a depression to which the thigh bone articulates
2. Option B: Parietal bone and the temporal bone of the skull are joined by fibrous joint
3. Option C: First vertebra is axis which articulates with the occipital condyles
4. Option D: The 9th and 10th pairs of ribs are called the floating ribs
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Question 52 (AIPMT 2010, Q112)
Microbes in Human WelfareBotanyEasy
An example of endomycorrhiza is :
1. Option A: Rhizobium
2. Option B: Nostoc
3. Option C: Glomus
4. Option D: Agaricus
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Question 53 (AIPMT 2010, Q113)
Morphology of Flowering PlantsBotanyMedium
Aestivation of petals in the flower of cotton is correctly shown in :
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 54 (AIPMT 2010, Q114)
Plant KingdomBotanyHard
Examine the figures (A-D) given below and select the right option out of 1-4, in which all the four structures A, B, C and D are identified correctly.
1. Option A: A - Sucker, B - Seta, C - Megaspore mother cell, D - Gemma cup
2. Option B: A - Rhizome, B - Sporangiophore, C - Polar cell, D - Globule
3. Option C: A - Runner, B - Archegoniophore, C - Synergid, D - Antheridium
4. Option D: A - Offset, B - Antheridiophore, C - Antipodals, D - Oogonium
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Question 55 (AIPMT 2010, Q115)
EcosystemBotanyMedium
Which of the following representations shows the pyramid of number in a forest ecosystem?
1. Option A: C
2. Option B: D
3. Option C: A
4. Option D: B
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Question 56 (AIPMT 2010, Q116)
Principles of Inheritance and VariationBotanyHard
Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character.
1. Option A: The male parent is homozygous dominant
2. Option B: The female parent is heterozygous
3. Option C: The parents could not have had a normal daughter for this character
4. Option D: The trait under study could not be colour-blindness
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Question 57 (AIPMT 2010, Q117)
Morphology of Flowering PlantsBotanyHard
The correct floral formula of soybean is :
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 58 (AIPMT 2010, Q118)
Molecular Basis of InheritanceBotanyMedium
The $3' - 5'$ phosphodiester linkages inside a polynucleotide chain serve to join :
1. Option A: One nitrogenous base with pentose sugar
2. Option B: One DNA strand with the other DNA strand
3. Option C: One nucleoside with another nucleoside
4. Option D: One nucleotide with another nucleotide
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Question 59 (AIPMT 2010, Q119)
Biotechnology: Principles and ProcessesZoologyMedium
In genetic engineering, a DNA segment (gene) of interest is transferred to the host cell through a vector. Consider the following four agents (A-D) in this regard and select the correct option about which one or more of these can be used as vector/vectors. (A) a bacterium (B) plasmid (C) plasmodium (D) bacteriophage
1. Option A: (B) and (D) only
2. Option B: (A), (B) and (D) only
3. Option C: (A) only
4. Option D: (A) and (C) only
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Question 60 (AIPMT 2010, Q120)
EcosystemBotanyHard
Study the cycle shown below and select the option which gives correct words for all the four blanks A, B, C and D.
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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