Class/Course - Medical Entrance

Subject - Biology

Total Number of Question/s - 4619


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  • 1. The Living World - Quiz

    1. Which one of the following is an example of negative feedback loop in humans?
    a) Constriction of skin blood vessels and contraction of skeletal muscles when it is too cold
    b) Secretion of tears after falling of sand particles into the eye
    c) Salivation of mouth at the sight og delicious food
    d) Secretion of sweat glands and contriction of skin blood vessels when it is too hot

    2. Glycodgen is a polymer of
    a) galactose
    b) glucose
    c) fructose
    d) sucrose

  • 2. Origin and Evolution of Life - Quiz

    1. Which one of the following pair has homologous organs?
    a) Pectoral fins of a fish and forelimbs of a horse
    b) Wings of a bat and wings of cockroach
    c) Air sac of fish and lungs of frog
    d) Wings of a bird and wings of a butterfly

    2. In general , in the development history of a mammalian heart, it is observed that it passes through a two-chambered fish-like heart, three-chambered frog - like heart and finally to four-chambered stage. To which hypothesis can this above cited statement be approximated?
    a) Hardy-Weinberg law
    b) Lamarck's principle
    c) Biogenetic law
    d) Mendelian principles

  • 3. Biomolecules - Quiz

    1. Which one of the following statements about cytochrome 450 is wrong?
    a) It contains iron
    b) It is a coloured cell
    c) It has an important role in metabolism
    d) It is an enzyme involved in oxidation reactions

    2. The four elements making 99% of living system are
    a) CHOS
    b) CHOP
    c) CHON
    d) CNOP

  • 4. Enzymes - Quiz

    1. The catalytic efficiency of two different enzymes can be compared by the
    a) formation of the product
    b) pH optimum value
    c) Km value
    d) molecular size of the enzyme

    2. Telomerase is an enzyme which is a
    a) repetitive DNA
    b) RNA
    c) simple protein
    d) ribpnucleoprotein

  • 5. Cell and Cell Division - Quiz

    1. If you are provided with root tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?
    a) Metaphase
    b) Telophase
    c) Anaphase
    d) Prophase

    2. Centromere is a part of
    a) ribosomes and rRNA
    b) chromosomes
    c) mitochondria
    d) endoplasmic reticulum

  • 6. Genetics - Quiz

    1. During transcription, the DNA site at which RNA polymerase binds is called
    a) receptor
    b) enhancer
    c) promoter
    d) regulator

    2. Which one of the following triplet codes, is correctly matched with its specificity for an amino acid in protein synthesis or as start on stop codon?
    a) UGU-Leucine
    b) UAC-Tyrosine
    c) UCG-Start
    d) UUU-Stop

  • 7. Systematics - Quiz

    1. The term Phylum was given by
    a) Cuvier
    b) Haeckel
    c) Theophrastus
    d) Linnaeus

    2. Species is
    a) basic unit of classification
    b) unit in the evolutionary history of a tree
    c) specific class of evolution
    d) not related to evolution

  • 8. Kingdom Monera and Viruses - Quiz

    1. The term antibiotic was first used by
    a) Fleming
    b) Pasteur
    c) Waksman
    d) Lister

    2. Which of the following statements is not true for retroviruses?
    a) DNA is not present at any stage in the life cycle of retroviruses
    b) Retroviruses carry gene for RNA dependent DNA polymerase
    c) The genetic material in mature retroviruses is RNA
    d) Retroviruses are causative agents for certain kinds of cancer in man

  • 9. Kingdom Protista - Quiz

    1. Plasmodium, the malarial parasite, belongs to class
    a) Sarcodina
    b) Ciliata
    c) Sporozoa
    d) Dinophyceae

    2. Macro and micronucleus are the characteristic feature of
    a) Paramecium and Vorticella
    b) Opelina and Nictothirus
    c) Hydra and Ballantidium
    d) Vorticella and Nictothirus

  • 10. Kingdom Fungi - Quiz

    1. Lichens are well known combination of an alga and a fungus where fungus has
    a) A saprophytic relationship with the alga
    b) An epiphytic relationship with the alga
    c) A parasitic relationship with the alga
    d) A symbiotic relationship with the alga

    2. Most of the lichens consist of
    a) Blue-green algae and Basidomycetes
    b) Blue-green algae and Ascomycetes
    c) Red algae and Ascomycetes
    d) Brown algae and Phycomycetes

  • 11. Plant Kingdom - Quiz

    1. Dichotomous branching is found in
    a) Fern
    b) Funaria sperms get killed by Pteris sperms
    c) Liveworts
    d) Marchantia

    2. Spore dissemination in some liverworts is aided by
    a) Elaters
    b) Indusium
    c) Calyptra
    d) Peristome teeth

  • 12. Animal Kingdom - Quiz

    1. Pneumatic bones are expected to be found in 
    a) Pigeon
    b) House lizard
    c) Frog tadpole
    d) Flying fish

    2. All chordates possess
    a) Exoskeleton
    b) Limbs
    c) Skull
    d) Axial skeletal rod of notochord

  • 13. Morphology of Flowering Plants - Quiz

    1. Edible part of banana is
    a) Epicarp
    b) Mesocarp and less developed endocarp
    c) Endocarp and less developed mesocarp
    d) Epicarp and mesocarp

    2. Pineapple (ananas) fruit develops from
    a) A multipistillate syncarpous flower
    b) A cluster of compactly borne flowers on a common axis
    c) A multilocular monocarpellary flower
    d) A unilocular polucarpellary flower

  • 14. Anatomy of Plants - Quiz

    1. What happens during vascularization in plants?
    a) Differentiation of procambium is immeditely followed by the development of secondary xylem and phloem
    b) Differentiation of procambium followed by the development of xylem and phloem
    c) Differentiation of procambium, xylem and phloem is simultaneous
    d) Differentiation of procambium followed by the development of primary phloem and then by primary xylem

    2. Pith and cortex do not differentiate in
    a) Monocot stem
    b) Dicot stem
    c) Monocot root
    d) Dicot root

  • 15. Plant-Water Relations - Quiz

    1. The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of
    a) Lignified thick walls
    b) Cohesion and adhesion
    c) Weak gravitational pull
    d) Transpiration pull

    2. Opening and closing of stomata is due to
    a) Hormonal change in guard cells
    b) Change in turgor pressure of guard cells
    c) Gaseous exchange
    d) Respiration

  • 16. Plant Nutrition - Quiz

    1. The deficiencies of micronutrients, not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport?
    a) Co, Ni, Mo
    b) Ca, K, Na
    c) Mn, Co, Ca
    d) Cu, Mn, Fe

    2. The major portion o the dry weight of plants comprises of
    a) Carbon, hydrogen and oxygen
    b) Nitrogen, phosphorus and potassium
    c) Calcium, magnesium and sulphur
    d) Carbon, nirtrogen and hydrgen

  • 17. Photosynthesis - Quiz

    1. Photochemical reactions in the chloroplast are directly involved in
    a) Formation of phosphoglyceric acid
    b) Fixation of carbon dioxide
    c) Synthesis of glucose and starch
    d) Photolysis of water and phosphorylation of ADP to ATP

    2. Chlorophyll in chloroplasts is located in
    a) Outer membrane
    b) Inner membrane
    c) Thylakoids
    d) Stroma

  • 18. Cellular Respiration - Quiz

    1. Terminal cytochrome of respiratory chain which donates electrons to oxygen is
    a) cyt. b
    b) cyt. c
    c) cyt. a1
    d) cyt. a3

    2. The chemiosmotic couping hypothesis of oxidative phosphorylation proposes that Adenosine Triphosphate (ATP) is formed because
    a) High energy bonds are formed in mitochondrial proteins
    b) ADP is pumped out of the matrix into the intermembrane space
    c) A proton gradient froms across the inner membrane
    d) There is a change in the permeability of the inner mitochondrial membrane toward Adenosine Diphosphate (ADP)

  • 19. Plant Growth, Movement and Plant Hormones - Quiz

    1. Gibberellins promote
    a) Seed germination
    b) Seed dormancy
    c) Leaf fall
    d) Root elongation

    2. Cytokinins
    a) Promote abscission
    b) Influence water movement
    c) Help retain chlorophyll
    d) Inhibit protoplasmic straming

  • 20. Reproduction in Flowering Plants and Plant Embryology - Quiz

    1. Which one of the following is resistant to enzyme action?
    a) Crok
    b) Wood fibre
    c) Pollen exine
    d) Leaf cuticle

    2. Nucellus embryo is
    a) Amphimictic haploid
    b) Amphimictic diploid
    c) Apomictic haploid
    d) Apomictic diploid

  • 21. Animal Tissues - Quiz

    1. The polysaccharide present in the matrix of cartilage is known as
    a) Cartilagin
    b) Ossein
    c) Chondriotin
    d) Casein

    2. Protein present in the matrix of cartilage is known as
    a) Chondrin
    b) Casein
    c) Cartilagin
    d) Ossein

  • 22. Animal Nutrition and Digestion - Quiz

    1. Secretin and cholecystokinin are digestive hormones. They are secreted In
    a) Oespohagus
    b) Ileum
    c) Duodenum
    d) Pyloric stomach

    2. If pancreas is removed, the compound which remain undigested is
    a) Carbohydrates
    b) Fats
    c) Proteins
    d) All of these

  • 23. Respiratory Gas Exchange - Quiz

    1. People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metre have around 8 million. This is because at high altitude
    a) Atmospheric O2 level is less and hence, more RBCs are needed to absorb the required amount of O2 to survive
    b) There is more UV rediation which enhances RBC production
    c) People eat more nutritive food, therefore, more RBCs are formed
    d) People get pollution-free air to breathe and more oxygen is available

    2. The carbon dioxide is transported via blood to lungs as
    a) Dissolved in blood plasma
    b) In the form of carbonic acid only
    c) In combination with haemglobin only
    d) Carbaminohaemoglobin and as carbonic acid

  • 24. Circulation of Body Fluids - Quiz

    1. At high altitude, the RBCs in the human blood will
    a) Increase in size
    b) Decrease in size
    c) Increase in number
    d) Decrease in number

    2. Pulmonary artery is different from pulmonary vein because it has
    a) Larger lumen
    b) Thick muscular walls
    c) No endothelium
    d) Valves

  • 25. Excretion and Osmoregulation - Quiz

    1. Uricotelism is found in
    a) Mammals and birds
    b) Fishes and fresh water protozoans
    c) Birds, reptiles and insects
    d) Frogs and toads

    2. Proximal and distal convoluted tubules are parts of
    a) Seminiferous tubules
    b) Nephron
    c) Oviduct
    d) Vas deferens

  • 26. Movement and Locomotion - Quiz

    1. An acromian process is characteristically found in the
    a) Pelvic girdle of mammals
    b) Pectoral girdle of mammals
    c) Skull of frog
    d) Sperm of mammals

    2. Number of cervical vertebrae in camel is
    a) More than that of rabbit
    b) Less than that of rabbit
    c) Same as that of whale
    d) More than that of horse

  • 27. Nervous Coordination and Sense Organs - Quiz

    1. The sympathetic nerves, in mammals arise from
    a) Sacral nerves
    b) Cervical nerves
    c) Thoraco-lumbar nerves
    d) III, VII, IX and X cranial nerves

    2. Ommatidia serve the purpose of photoreception in
    a) Human
    b) Sunflower
    c) Cockroach
    d) Frog

  • 28. Hormonal Coordination - Quiz

    1. MSH of pars intermedia of middle pituitary is responsible for
    a) Darkening of skin in lower vertebrates
    b) Light colouration of skin in lower vertebrates
    c) Both (a) and (b)
    d) Darkening of skin in human beings

    2. Melanin protects from
    a) UV rays
    b) Visible rays
    c) Infra-red rays
    d) X-rays

  • 29. Reproduction in Animals and Embryonic Development - Quiz

    1. The function of copper-T is to prevent
    a) Fertilization
    b) Egg maturation
    c) Ovulation
    d) Implantation of blastocyst

    2. Which set is similar?
    a) Corpus luteum - Graafian follicle
    b) Sebum - Sweat
    c) Bundle of His - Pacemaker
    d) Vit - B7 - Niacin

  • 30. Growth, Regeneration and Ageing - Quiz

    1. The semilog of per minute growing bacteria is plotted against time. What will be the shape of graph?
    a) Sigmoid
    b) Hyperbola
    c) Ascending straight line
    d) Descending straight line

    2. Auxetic growth is
    a) Increase in cell volumn only
    b) Increase in cell number only
    c) Increase in fatty tissue
    d) Increase in intercellular material

  • 31. Ecology and Environment - Quiz

    1. The CO2 content by volume, in the atmospheric air is about
    a) 0.0314%
    b) 0.34%
    c) 3.34%
    d) 4%

    2. Drawback of DDT as pesticide is
    a) It becomes ineffective after some time
    b) It is less effective than others
    c) It is not easily/rapidly degraded in nature
    d) Its high cost

  • 32. Wildlife and Conservation of Natural Resources - Quiz

    1. One of the most important function of botanical garden is that
    a) One can observe tropical plants there
    b) They allow ex sity conservation of germplasm
    c) They provide the natural habitat for wild life
    d) They provide a beautiful area for recreation

    2. The endangered largest living lemur Idri idri is inhabitant of
    a) Madagascar
    b) Mauritius
    c) Sri Lanka
    d) India

  • 33. Domestication and Improvement of Plants - Quiz

    1. Which statement is correct about centre of origin of plants?
    a) More diversity in varieties
    b) Frequency of dominant gene is more
    c) Climatic conditions more favourable
    d) None of the above

    2. Parthenocarpic tomato fruits can be produced by
    a) Removing androecium of flowers before pollen grains are released
    b) Treating the plants with low concentrations of gibberellic acid and auxins
    c) Raising the plants from vernalized seeds
    d) Treating the plants with phenyl mercuric acetate

  • 34. Domestication and Improvement of Animals - Quiz

    1. The long-term prospects for a truly human civilization depend in a large measure on
    a) The ability of humanity to moderate its fecundity
    b) Increasing the food production
    c) Colonization of underpopulated areas
    d) Control of human diseases

    2. Pasteurization of milk involve heating for
    a) 60 min at about 900C
    b) 30 min at about 500C
    c) 30 min at about 650C
    d) 60 min at 1000C

  • 35. Disease and Disease Control - Quiz

    1. The term antibiotic was coined by
    a) Selman Waksman
    b) Alexander Fleming
    c) Edward Jenner
    d) Louis Pasteur

    2. Which of the following is not a hereditary disease?
    a) Cretinism
    b) Cystic fibrosis
    c) Thalassaemia
    d) Haemophilia

  • 36. Human Population - Quiz

    1. A country with a high rate of population growth took measures to reduce it. The figure below shows age sex pyramids of populations. A and B twenty years apart. Select the correct interpretation about them

    Interpretations
    a) A is more recent and shows slight reduction in the growth rate
    b) B is earlier pyramid and shows stabilised growth rate
    c) B is more recent showing that population is very young
    d) A is the earlier pyramid and so change has occurred in the growth rate

    2. Geometic representation of age structure is a characteristic of
    a) Biotic community
    b) Populaton
    c) Landscape
    d) Ecosystem

  • 37. Biofertilizers and Biopesticides - Quiz

    1. What is agent orange?
    a) A biodegradable insecticide
    b) A weedicide containing dioxin
    c) Colour used in fluorescent lamp
    d) A hazardous chemical used in luminous paints

    2. Suppression of reproduction of one type of ogranism by utilizing some features of its Biology or Physiology to destroy it or by use of another organism is known as
    a) Competition
    b) Predation
    c) Biological control
    d) Physiological control

  • 38. Biology in Human Welfare - Quiz

    1. Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yeild?
    a) Frequent irrigation of the crop
    b) Treatment of the plants with cytokinins alongwith a small dose of nitrogenous fertilizer
    c) Removal of all yellow leaves and spraying the remaining freen leaves with 2, 4, 5, - trichlorophenoxy acetic acid
    d) Application of iron and magnesium to promote synthesis of chlorophyll

    2. Two bacteria found to be very useful in genetic engineering experiments are
    a) Nitrosomonas and Klebsiella
    b) Escherichia and Agrobacterium
    c) Nitrobacter and Azothobacter
    d) Rhizobium and Diplococcus