AIPMT 2007 · Biology

AIPMT 2007 Biology Questions with Solutions

The AIPMT 2007 paper had 53 Biology questions from 20 chapters. By section: 43 Botany and 10 Zoology.

Morphology of Flowering Plants had the most questions (9), followed by Plant Growth and Development and Principles of Inheritance and Variation with 5 each.

All 53 questions are listed below; their answers and explanations are in Premium.

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Biology questions
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Chapter-wise: AIPMT 2007 Biology

How many questions each chapter had in AIPMT 2007. Open a chapter for its questions from every year.

  1. Morphology of Flowering Plants· Botany9 Qs
  2. Plant Growth and Development· Botany5 Qs
  3. Principles of Inheritance and Variation· Botany5 Qs
  4. Animal Kingdom· Zoology4 Qs
  5. Biodiversity and Conservation· Botany3 Qs
  6. Biological Classification· Botany3 Qs
  7. Cell: The Unit of Life· Botany3 Qs
  8. Evolution· Zoology3 Qs
  9. Organisms and Populations· Botany3 Qs
  10. Plant Kingdom· Botany3 Qs
  11. Photosynthesis in Higher Plants· Botany2 Qs
  12. Sexual Reproduction in Flowering Plants· Botany2 Qs
  13. Anatomy of Flowering Plants· Botany1 Q
  14. Biomolecules· Zoology1 Q
  15. Cell Cycle and Cell Division· Botany1 Q
  16. Ecosystem· Botany1 Q
  17. Microbes in Human Welfare· Botany1 Q
  18. Molecular Basis of Inheritance· Botany1 Q
  19. Neural Control and Coordination· Zoology1 Q
  20. Structural Organisation in Animals· Zoology1 Q

All 53 AIPMT 2007 Biology questions

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

  1. Question 1 (AIPMT 2007, Q52)

    Cell: The Unit of LifeBotanyEasy
    Write the location and function of Cytoskeleton.
    1. Option A: Present in cytoplasm of eukaryotic cells; maintains cell shape and aids intracellular transport.
    2. Option B: Present in nucleus; controls protein synthesis.
    3. Option C: Present in chloroplast; performs photosynthesis.
    4. Option D: Present in mitochondria; produces ATP.

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  2. Question 2 (AIPMT 2007, Q53)

    Photosynthesis in Higher PlantsBotanyEasy
    Write the location and function of Phytol chain.
    1. Option A: Attached to chlorophyll in thylakoid membranes; anchors chlorophyll molecules.
    2. Option B: Located in stroma; fixes carbon dioxide.
    3. Option C: Located in mitochondria; synthesizes ATP.
    4. Option D: Located in nucleus; stores genetic information.

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  3. Question 3 (AIPMT 2007, Q54)

    Sexual Reproduction in Flowering PlantsBotanyEasy
    Write the location and function of Synergid.
    1. Option A: Located at micropylar end of embryo sac; guides pollen tube to egg cell.
    2. Option B: Located at chalazal end; forms endosperm.
    3. Option C: Located in anther; produces pollen grains.
    4. Option D: Located in ovary wall; protects ovules.

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  4. Question 4 (AIPMT 2007, Q55)

    Anatomy of Flowering PlantsBotanyEasy
    Write the location and function of Sieve tube element.
    1. Option A: Found in phloem tissue; transports food materials throughout the plant.
    2. Option B: Found in xylem tissue; transports water.
    3. Option C: Found in epidermis; prevents water loss.
    4. Option D: Found in cortex; stores starch.

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  5. Question 5 (AIPMT 2007, Q56)

    Cell Cycle and Cell DivisionBotanyEasy
    Write the location and function of Centromere.
    1. Option A: Primary constriction of chromosome; site of spindle fibre attachment.
    2. Option B: End region of chromosome; synthesizes proteins.
    3. Option C: Located in nucleolus; forms ribosomes.
    4. Option D: Located in cytoplasm; controls cell division.

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  6. Question 6 (AIPMT 2007, Q57)

    Biological ClassificationBotanyMedium
    What is shown in diagram? What are P and Q?
    1. Option A: Nostoc; P = Vegetative cell, Q = Heterocyst
    2. Option B: Anabaena; P = Heterocyst, Q = Vegetative cell
    3. Option C: Nostoc; P = Heterocyst, Q = Akinete
    4. Option D: Oscillatoria; P = Vegetative cell, Q = Heterocyst

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  7. Question 7 (AIPMT 2007, Q58)

    Biological ClassificationBotanyMedium
    Tell whether the diagram is T1_1-phage or T2_2-phage. What are P and Q?
    1. Option A: T1-phage; P = Tail fibres, Q = Sheath
    2. Option B: T2-phage; P = Collar, Q = Tail fibres
    3. Option C: T2-phage; P = Sheath, Q = Tail fibres
    4. Option D: T1-phage; P = Collar, Q = Base plate

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  8. Question 8 (AIPMT 2007, Q59)

    Sexual Reproduction in Flowering PlantsBotanyMedium
    Which type of ovule is shown in diagram? Give one reason.
    1. Option A: Orthotropous; ovule is straight with micropyle and chalaza in one line
    2. Option B: Anatropous; ovule is inverted and micropyle lies close to hilum
    3. Option C: Campylotropous; embryo sac is curved
    4. Option D: Amphitropous; ovule and embryo sac are both curved

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  9. Question 9 (AIPMT 2007, Q60)

    Morphology of Flowering PlantsBotanyMedium
    What is the type of flower shown in diagram? Give examples.
    1. Option A: Hypogynous flower; examples: Mustard, China rose
    2. Option B: Perigynous flower; examples: Rose, Plum
    3. Option C: Epigynous flower; examples: Guava, Cucumber
    4. Option D: Actinomorphic flower; examples: Datura, Chilli

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  10. Question 10 (AIPMT 2007, Q61)

    Morphology of Flowering PlantsBotanyMedium
    Which type of aestivation is shown in diagram? Give examples.
    1. Option A: Valvate; examples: Calotropis, Mustard
    2. Option B: Twisted; examples: China rose, Cotton
    3. Option C: Imbricate; examples: Cassia, Gulmohar
    4. Option D: Vexillary; examples: Pea, Bean

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  11. Question 11 (AIPMT 2007, Q62)

    Morphology of Flowering PlantsBotanyEasy
    Write down the type of placentation, inflorescence and fruit of Pea.
    1. Option A: Marginal placentation; Racemose inflorescence; Legume fruit
    2. Option B: Axile placentation; Cymose inflorescence; Capsule fruit
    3. Option C: Parietal placentation; Capitulum inflorescence; Achene fruit
    4. Option D: Free-central placentation; Spike inflorescence; Caryopsis fruit

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  12. Question 12 (AIPMT 2007, Q63)

    Morphology of Flowering PlantsBotanyEasy
    Write down the type of placentation, inflorescence and fruit of Coriander.
    1. Option A: Marginal placentation; Raceme; Legume
    2. Option B: Axile placentation; Compound umbel; Cremocarp
    3. Option C: Parietal placentation; Capitulum; Cypsela
    4. Option D: Basal placentation; Spike; Caryopsis

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  13. Question 13 (AIPMT 2007, Q64)

    Morphology of Flowering PlantsBotanyEasy
    Write down the type of placentation, inflorescence and fruit of Wheat.
    1. Option A: Basal placentation; Spike of spikelets; Caryopsis
    2. Option B: Axile placentation; Umbel; Cremocarp
    3. Option C: Marginal placentation; Raceme; Legume
    4. Option D: Parietal placentation; Capitulum; Cypsela

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  14. Question 14 (AIPMT 2007, Q65)

    Morphology of Flowering PlantsBotanyEasy
    Write down the type of placentation, inflorescence and fruit of Sunflower.
    1. Option A: Basal placentation; Capitulum (head); Cypsela
    2. Option B: Marginal placentation; Raceme; Legume
    3. Option C: Axile placentation; Umbel; Cremocarp
    4. Option D: Parietal placentation; Spike; Caryopsis

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  15. Question 15 (AIPMT 2007, Q66)

    Morphology of Flowering PlantsBotanyEasy
    Write down the type of placentation, inflorescence and fruit of Mustard.
    1. Option A: Axile placentation; Cymose; Berry
    2. Option B: Parietal placentation; Racemose; Siliqua
    3. Option C: Marginal placentation; Raceme; Legume
    4. Option D: Basal placentation; Capitulum; Cypsela

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  16. Question 16 (AIPMT 2007, Q67)

    Morphology of Flowering PlantsBotanyEasy
    Differentiate between Culm and Caudex (Give one important difference).
    1. Option A: Culm: Aerial stem with distinct nodes and internodes (grasses); Caudex: Unbranched, stout stem with crown of leaves (palms).
    2. Option B: Culm: Underground stem; Caudex: Root modification.
    3. Option C: Culm: Leaf modification; Caudex: Flower modification.
    4. Option D: Culm: Reproductive organ; Caudex: Vegetative organ.

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  17. Question 17 (AIPMT 2007, Q68)

    Biological ClassificationBotanyEasy
    Differentiate between Slime moulds and Fungi (Give one important difference).
    1. Option A: Slime moulds possess a naked, amoeboid vegetative phase; Fungi possess filamentous hyphae forming mycelium.
    2. Option B: Slime moulds are photosynthetic; Fungi are non-photosynthetic.
    3. Option C: Slime moulds are prokaryotic; Fungi are eukaryotic.
    4. Option D: Slime moulds lack nuclei; Fungi possess nuclei.

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  18. Question 18 (AIPMT 2007, Q69)

    Morphology of Flowering PlantsBotanyMedium
    Differentiate between Cyathium and Hypanthodium (Give one important difference).
    1. Option A: Cyathium has a cup-shaped involucre enclosing reduced unisexual flowers; Hypanthodium has a hollow fleshy receptacle with flowers lining the inner wall.
    2. Option B: Cyathium is cymose; Hypanthodium is racemose.
    3. Option C: Cyathium contains bisexual flowers only; Hypanthodium contains unisexual flowers only.
    4. Option D: Cyathium occurs in grasses; Hypanthodium occurs in legumes.

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  19. Question 19 (AIPMT 2007, Q70)

    Biodiversity and ConservationBotanyEasy
    Differentiate between Biological magnification and Eutrophication (Give one important difference).
    1. Option A: Biological magnification is the increase in concentration of toxic substances along a food chain; Eutrophication is nutrient enrichment of water bodies causing excessive plant growth.
    2. Option B: Biological magnification occurs only in soil; Eutrophication occurs only in air.
    3. Option C: Biological magnification increases oxygen; Eutrophication increases biodiversity.
    4. Option D: Biological magnification is beneficial; Eutrophication is always beneficial.

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  20. Question 20 (AIPMT 2007, Q71)

    Microbes in Human WelfareBotanyEasy
    Differentiate between White rust and Brown rust (Give one important difference).
    1. Option A: White rust is caused by Albugo candida; Brown rust is caused by Puccinia species.
    2. Option B: White rust affects animals; Brown rust affects plants.
    3. Option C: White rust is bacterial; Brown rust is viral.
    4. Option D: White rust occurs in roots only; Brown rust occurs in flowers only.

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  21. Question 21 (AIPMT 2007, Q72)

    Molecular Basis of InheritanceBotanyEasy
    Match the column-I and Column-II :
    1. Option A: a-ii, b-i, c-v, d-iii, e-iv
    2. Option B: a-i, b-ii, c-vii, d-iii, e-iv
    3. Option C: a-ii, b-v, c-i, d-iv, e-iii
    4. Option D: a-iii, b-i, c-v, d-ii, e-iv

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  22. Question 22 (AIPMT 2007, Q73)

    Plant KingdomBotanyEasy
    Fill in the blanks with suitable words given in boxes: (a) Rhizophora has both _______________________and _________________ (b) Aquatic plants are ______________________(Pteridophyte) and _____________________ (Angiosperm) (c) Plant bearing both male and female flowers is called______________and the pollination between different flowers of the same plant is called_______________. (d) ____________has ______________.
    1. Option A: (a) Pneumatophores & Vivipary; (b) Marsilea & Eichhornia; (c) Monoecious & Geitonogamy; (d) Cycas has Coralloid root
    2. Option B: (a) Coralloid root & Vivipary; (b) Usnea & Eichhornia; (c) Dioecious & Xenogamy; (d) Pinus has Pneumatophores
    3. Option C: (a) Pneumatophores & Xenogamy; (b) Marsilea & Oscillatoria; (c) Monoecious & Xenogamy; (d) Cycas has Vivipary
    4. Option D: (a) Vivipary & Geitonogamy; (b) Pinus & Eichhornia; (c) Dioecious & Geitonogamy; (d) Usnea has Coralloid root

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  23. Question 23 (AIPMT 2007, Q74)

    Plant KingdomBotanyMedium
    Give any two conditions for seed habit.
    1. Option A: Retention of megaspore within megasporangium and development of embryo inside the megaspore
    2. Option B: Homospory and external fertilization
    3. Option C: Formation of spores and absence of embryo
    4. Option D: Vegetative propagation and fragmentation

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  24. Question 24 (AIPMT 2007, Q75)

    Plant KingdomBotanyMedium
    Among the following pairs, which one shows the tendency of seed habit?
    1. Option A: Lycopodium and Equisetum
    2. Option B: Selaginella and Pteris
    3. Option C: Dryopteris and Pteridium
    4. Option D: Equisetum and Dryopteris

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  25. Question 25 (AIPMT 2007, Q76)

    Plant Growth and DevelopmentBotanyEasy
    Suggest three ways to break seed dormancy.
    1. Option A: Scarification, stratification and treatment with gibberellic acid (GA3)
    2. Option B: Fragmentation, budding and grafting
    3. Option C: Layering, cutting and grafting
    4. Option D: Binary fission, sporulation and budding

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  26. Question 26 (AIPMT 2007, Q77)

    Principles of Inheritance and VariationBotanyEasy
    Mutation can be defined as __________ variation.
    1. Option A: Sudden heritable
    2. Option B: Continuous
    3. Option C: Environmental
    4. Option D: Acquired

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  27. Question 27 (AIPMT 2007, Q78)

    Principles of Inheritance and VariationBotanyEasy
    Mutation leads to evolution of __________ of a gene.
    1. Option A: Alleles
    2. Option B: Chromosomes
    3. Option C: Centromeres
    4. Option D: Spindles

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  28. Question 28 (AIPMT 2007, Q79)

    Principles of Inheritance and VariationBotanyEasy
    Genes expressed only in homozygous state are __________.
    1. Option A: Recessive
    2. Option B: Dominant
    3. Option C: Codominant
    4. Option D: Lethal

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  29. Question 29 (AIPMT 2007, Q80)

    Principles of Inheritance and VariationBotanyEasy
    When both alleles of a gene are expressed it is __________.
    1. Option A: Codominance
    2. Option B: Dominance
    3. Option C: Recessiveness
    4. Option D: Mutation

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  30. Question 30 (AIPMT 2007, Q81)

    Principles of Inheritance and VariationBotanyEasy
    Gene, which is most frequent is __________ type.
    1. Option A: Wild
    2. Option B: Mutant
    3. Option C: Lethal
    4. Option D: Recessive

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  31. Question 31 (AIPMT 2007, Q82)

    Plant Growth and DevelopmentBotanyEasy
    Who discovered photoperiodism?
    1. Option A: Garner and Allard
    2. Option B: Went
    3. Option C: Darwin and Darwin
    4. Option D: Bose

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  32. Question 32 (AIPMT 2007, Q83)

    Plant Growth and DevelopmentBotanyEasy
    Select one SDP and one LDP from the following plants: Chrysanthemum, Rice, Spinach, Barley, Radish.
    1. Option A: Chrysanthemum (SDP) and Spinach (LDP)
    2. Option B: Barley (SDP) and Rice (LDP)
    3. Option C: Rice (SDP) and Chrysanthemum (LDP)
    4. Option D: Radish (SDP) and Rice (LDP)

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  33. Question 33 (AIPMT 2007, Q84)

    Plant Growth and DevelopmentBotanyEasy
    Who gave the term 'Phytochrome'? Give one specific feature of phytochrome.
    1. Option A: Butler et al.; It exists in two interconvertible forms, Pr and Pfr.
    2. Option B: Garner and Allard; It fixes atmospheric nitrogen.
    3. Option C: Went; It transports water through xylem.
    4. Option D: Mendel; It synthesizes glucose during photosynthesis.

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  34. Question 34 (AIPMT 2007, Q85)

    Biodiversity and ConservationBotanyEasy
    Match the Column-I and Column-II
    1. Option A: a-ii, b-vii, c-ix, d-viii, e-x
    2. Option B: a-iii, b-vi, c-ix, d-v, e-x
    3. Option C: a-ii, b-v, c-viii, d-ix, e-x
    4. Option D: a-iv, b-vii, c-ix, d-viii, e-iii

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  35. Question 35 (AIPMT 2007, Q86)

    Organisms and PopulationsBotanyEasy
    Differentiate between Habitat and Niche.
    1. Option A: Habitat is the place where an organism lives; Niche is the functional role of the organism in its environment.
    2. Option B: Habitat is the functional role; Niche is the place where an organism lives.
    3. Option C: Habitat and Niche are the same.
    4. Option D: Habitat refers to food; Niche refers to shelter.

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  36. Question 36 (AIPMT 2007, Q87)

    EcosystemBotanyEasy
    Differentiate between Flora and Vegetation.
    1. Option A: Flora refers to plant species of an area; Vegetation refers to the plant community and its cover.
    2. Option B: Flora refers to animals; Vegetation refers to plants.
    3. Option C: Flora is a plant community; Vegetation is a single plant species.
    4. Option D: Both terms have the same meaning.

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  37. Question 37 (AIPMT 2007, Q88)

    Biodiversity and ConservationBotanyEasy
    Apart from CO₂, name other greenhouse gases.
    1. Option A: Methane (CH₄), Nitrous oxide (N₂O), CFCs
    2. Option B: Oxygen, Nitrogen, Hydrogen
    3. Option C: Sulphur, Phosphorus, Potassium
    4. Option D: Helium, Neon, Argon

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  38. Question 38 (AIPMT 2007, Q89)

    Plant Growth and DevelopmentBotanyEasy
    What is the type of movement of twiner and opening of flower?
    1. Option A: Twiner – Thigmotropism; Opening of flower – Photonasty
    2. Option B: Twiner – Geotropism; Opening of flower – Hydrotropism
    3. Option C: Twiner – Phototropism; Opening of flower – Chemotropism
    4. Option D: Twiner – Hydrotropism; Opening of flower – Geotropism

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  39. Question 39 (AIPMT 2007, Q90)

    BiomoleculesZoologyMedium
    Three groups of baby mice were used in a growth experiment. (a) Kept on complete diet (b) Fed basal diet without nutrient to be tested (c) Basal diet + carotene by feeding carrots. Identify curves a, b and c.
    1. Option A: a - Complete diet, b - Basal diet without nutrient, c - Basal diet + carotene
    2. Option B: a - Basal diet + carotene, b - Complete diet, c - Basal diet without nutrient
    3. Option C: a - Basal diet without nutrient, b - Complete diet, c - Basal diet + carotene
    4. Option D: a - Complete diet, b - Basal diet + carotene, c - Basal diet without nutrient

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  40. Question 40 (AIPMT 2007, Q91)

    Animal KingdomZoologyEasy
    Which animal is different from the rest of the animals?
    1. Option A: Starfish
    2. Option B: Whale
    3. Option C: Bat
    4. Option D: Peafowl

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  41. Question 41 (AIPMT 2007, Q92)

    Animal KingdomZoologyEasy
    How many of these animals are poisonous and to which class do they belong?
    1. Option A: Two; Arachnida and Insecta
    2. Option B: One; Mammalia
    3. Option C: Three; Aves, Mammalia and Insecta
    4. Option D: Four; Arachnida and Mammalia

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  42. Question 42 (AIPMT 2007, Q93)

    Animal KingdomZoologyEasy
    Which animals belong to the same class?
    1. Option A: Whale and Bat
    2. Option B: Peafowl and Bat
    3. Option C: Earthworm and Starfish
    4. Option D: Honey bee and Scorpion

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  43. Question 43 (AIPMT 2007, Q94)

    Animal KingdomZoologyEasy
    Which animals are the only representatives of their respective phyla in the given list?
    1. Option A: Earthworm and Starfish
    2. Option B: Whale and Bat
    3. Option C: Scorpion and Honey bee
    4. Option D: Bat and Peafowl

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  44. Question 44 (AIPMT 2007, Q95)

    Structural Organisation in AnimalsZoologyEasy
    Which of the following have three ear ossicles? Name the ossicles in the order of sound transmission.
    1. Option A: Whale and Bat; Malleus → Incus → Stapes
    2. Option B: Peafowl and Honey bee; Malleus → Incus → Stapes
    3. Option C: Starfish and Earthworm; Malleus → Incus → Stapes
    4. Option D: Scorpion and Bat; Malleus → Incus → Stapes

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  45. Question 45 (AIPMT 2007, Q96)

    Organisms and PopulationsBotanyEasy
    Identify the type of population growth represented by Age-Sex pyramid (a).
    1. Option A: Stable population
    2. Option B: Expanding population
    3. Option C: Declining population
    4. Option D: Extinct population

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  46. Question 46 (AIPMT 2007, Q97)

    Organisms and PopulationsBotanyEasy
    Identify the type of population growth represented by Age-Sex pyramid (b).
    1. Option A: Stable population
    2. Option B: Expanding population
    3. Option C: Declining population
    4. Option D: Extinct population

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  47. Question 47 (AIPMT 2007, Q98)

    Neural Control and CoordinationZoologyMedium
    Refer the following diagram: (a) What kind of reflex is it? (b) Where is it striking? (c) List the errors in the above diagram?
    1. Option A: a - Knee-jerk reflex; b - Patellar tendon below knee; c - Afferent and efferent pathways interchanged and interneuron wrongly shown
    2. Option B: a - Withdrawal reflex; b - Achilles tendon; c - Gray and white matter interchanged
    3. Option C: a - Corneal reflex; b - Cornea; c - Dorsal root ganglion absent
    4. Option D: a - Pupillary reflex; b - Iris; c - Motor neuron absent

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  48. Question 48 (AIPMT 2007, Q99)

    EvolutionZoologyEasy
    Nictitating membrane and Vermiform appendix are examples of which type of organs?
    1. Option A: Vestigial organs
    2. Option B: Homologous organs
    3. Option C: Analogous organs
    4. Option D: Connecting links

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  49. Question 49 (AIPMT 2007, Q100)

    EvolutionZoologyEasy
    Define vestigial organs.
    1. Option A: Reduced and functionless remnants of organs that were functional in ancestors
    2. Option B: Organs having the same function but different origin
    3. Option C: Organs having common origin but different functions
    4. Option D: Transitional structures between two groups

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  50. Question 50 (AIPMT 2007, Q101)

    EvolutionZoologyEasy
    Out of coccyx, mammary glands, muscles of external ear and opacity of eye due to cataract, which can be categorised in the same category?
    1. Option A: Coccyx and muscles of external ear
    2. Option B: Mammary glands and coccyx
    3. Option C: Mammary glands and cataract
    4. Option D: Cataract and muscles of external ear

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  51. Question 51 (AIPMT 2007, Q102)

    Cell: The Unit of LifeBotanyEasy
    Refer diagram. Write the functions of parts (1) and (2).
    1. Option A: (1) Light reaction; (2) Dark reaction
    2. Option B: (1) Dark reaction; (2) Light reaction
    3. Option C: (1) Respiration; (2) Photosynthesis
    4. Option D: (1) Protein synthesis; (2) ATP synthesis

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  52. Question 52 (AIPMT 2007, Q103)

    Cell: The Unit of LifeBotanyEasy
    Refer diagram. Write the functions of parts (1) and (2).
    1. Option A: (1) Selective transport; (2) ATP synthesis and respiration
    2. Option B: (1) Photosynthesis; (2) Respiration
    3. Option C: (1) Protein synthesis; (2) Digestion
    4. Option D: (1) Storage; (2) Secretion

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  53. Question 53 (AIPMT 2007, Q104)

    Photosynthesis in Higher PlantsBotanyMedium
    In photorespiration, RuBP is oxidized to form glycolate and glycerate. Which of the following flow diagrams correctly represents the photorespiratory (PCO) cycle involving chloroplasts, peroxisomes and mitochondria?
    1. Option A: Option (A)
    2. Option B: Option (B)
    3. Option C: Option (C)
    4. Option D: Option (D)

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