|91||The plant body is thalloid in
|92||Which one of the following is true for fungi?
(1) They are phagotrophs
(2) They lack a rigid cell wall
(3) They are heterotrophs
(4) They lack nuclear membrane
|93||Specialized cells for fixing atmospheric nitrogen in Nostoc are
(1) Akinetes(2) Heterocysts
|94||The common characteristics between tomato and potato will be maximum at the level of their
|95||What is common in all the three, Funaria, Dryopteris and Ginkgo?
(1) Independent sporophyte
(2) Presence of archegonia
(3) Well developed vascular tissues
(4) Independent gametophyte
|96||Which one of the following is wrongly matched?
(1) Nostoc-Water blooms
(2) Spirogyra-Motile gametes
(3) Sargassum-Chlorophyll C
(4) Basidiomycetes-PuffballsAnswer (2)
|97||Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicine, Sweet pea, Petunia, Indigofera, Mustard, Soybean, Tobacco and groundnut how many plants have corolla with valvate aestivation?
|98||How many plants among China rose, Ocimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium (Oleander) have opposite phyllotaxy?
|99||In a cymose inflorescence the main axis
(1) Terminates in a flower
(2) Has unlimited growth
(3) Bears a solitary flower
(4) Has unlimited growth but lateral branches end in flowers
|100||Which of the following statements is not true for stomatal apparatus?
(1) Inner walls of guard cells are thick
(2) Guard cells invariably possess chloroplasts and mitochondria
(3) Guard cells are always surrounded by subsidiary cells
(4) Stomata are involved in gaseous exchange
|101||Meristematic tissue responsible for increase in girth of tree trunk is
(1) Apical meristem
(2) Intercalary meristem
(3) Lateral meristem
|102||Inflorescence is racemose in
|103||During the metaphase stage of mitosis spindle fibres attach to chromosomes at
(3) Both centromere and kinetochore
(4) Centromere, kinetochore and areas adjoiningcentromere
|104||Uridine, present only in RNA is a
|105||The term ‘glycocalyx’ is used for
(1) A layer surrounding the cell wall of bacteria
(2) A layer present between cell wall and membrane of bacteria
(3) Cell wall of bacteria
(4) Bacterial cell glyco-engineered to possess N-glycosylated proteins
|106||Which of the following type of plastids does not contain stored food material?
|107||During meiosis I, the chromosomes start pairing at
|108||Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere?
(1) Anaerobic ammonium oxidation, and denitrification
(2) Aerobic nitrate oxidation, and nitrite reduction
(3) Decomposition of organic nitrogen, and conversion of dinitrogen to ammoniumcompounds
(4) Enteric fermentation in cattle, and nitrogen fixation by Rhizobium in root nodules oflegumes
|109||Which of the following best illustrates FEEDBACK in development?
(1) As tissue (X) develops, it secretes something that slows down the growth of tissue (Y)
(2) Tissue (X) secretes RNA which changes the development of tissue (Y)
(3) As tissue (X) develops, it secretes enzymes that inhibit the development of tissue (Y)
(4) As tissue (X) develops, it secretes something that induces tissue (Y) to develop
|110||The viability of seeds is tested by
(2) 2, 6 dichlorophenol indophenols
(3) 2, 3, 5 triphenyl tetrazolium chloride
|111||The pineapple which under natural conditions is difficult to blossom has been made to produce fruits throughout the year by application of
(1) IAA, IBA
(2) NAA, 2, 4-D
(3) Phenyl acetic acid
|112||Which of the following elements is a constituent of biotin?
|113||Bundle sheath cells
(1) Are rich in RuBisCo
(2) Are rich in PEP carboxylase
(3) Lack RuBisCo
(4) Lack both RuBisCo and PEP carboxylase
|114||Which one of the following statements is correct?
(1) Geitonogamy involves the pollen and stigma of flowers of different plants
(2) Cleistogamous flowers are always autogamous
(3) Xenogamy occurs only by wind pollination
(4) Chasmogamous flowers do not open at all
|115||Megaspores are produced from the megaspore mother cells after
(1) Meiotic division
(2) Mitotic division
(3) Formation of a thick wall
|116||Syngamy can occur outside the body of the organism in
|117||Animal vectors are required for pollination in
|118||Which of the following statements is correct?
(1) Sporopollenin can withstand high temperatures but not strong acids
(2) Sporopollenin can be degraded by enzymes
(3) Sporopollenin is made up of inorganic materials
(4) Sporopollenin can withstand high temperatures as well as strong acids and alkalis
|119||Albuminous seeds store their reserve food mainly in
|120||Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as
(3) Natural selection
(4) Genetic drift
|121||Which of the following is not a property of the genetic code?
|122||Genetic variation in a population arises due to
(1) Mutations only
(2) Recombination only
(3) Mutations as well as recombination
(4) Reproductive isolation and selection
|123||Satellite RNAs are present in some
(1) Plant viruses
|124||One of the most frequently used techniques in DNA fingerprinting is
|125||Which one of the following vectors is used to replace the defective gene in gene therapy?
(1) Ti plasmid
(4) Ri plasmid
|126||Which of the following statements is not true about somatic embryogenesis?
(1) A somatic embryo develops from a somatic cell
(2) The pattern of development of a somatic embryo is comparable to that of a zygotic embryo
(3) Somatic embryos can develop from microspores
(4) Somatic embryo is induced usually by an auxin such as 2, 4-D
|127||Genes of interest can be selected from a genomic library by using
(1) Restriction enzymes
(2) Cloning vectors
(3) DNA probes
(4) Gene targets
|128||During the process of isolation of DNA, chilled ethanol is added to
(1) Remove proteins such as histones
(2) Precipitate DNA
(3) Break open the cell to release DNA
(4) Facilitate action of restriction enzymes
|129||RNA interference involves
(1) Synthesis of mRNA from DNA
(2) Synthesis of cDNA from RNA using reverse transcriptase
(3) Silencing of specific mRNA due to complementary RNA
(4) Interference of RNA in synthesis of DNA
|130||Benthic organisms are affected most by
(1) Water-holding capacity of soil
(2) Light reaching the forest floor
(3) Surface turbulence of water
(4) Sediment characteristics of aquatic ecosystems
|131||Which of the following has maximum genetic diversity in India?
|132||Which organization publishes the Red Data Book?
|133||The largest tiger reserve in India is
|134||The second commitment period for Kyoto Protocolwas decided at
|135||Which one of the following is a primary consumer in maize field ecosystem?
|136||The characteristics of class Reptilia are:
(1) Body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears
(2) Body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca
(3) Fresh water animals with bony endoskeleton, air-bladder to regulate buoyancy
(4) Marine animals with cartilaginous endoskeleton, body covered with placoid scales
|137||Which one of the following animals is correctly matched with its one characteristics and the taxon?
|138||Which one of the following groups of animals reproduces only by sexual means?
|139||Sharks and dogfishes differ from skates and rays by
(1) Their pectoral fins distinctly marked off from cyclindrical bodies
(2) Gill slits are ventrally placed
(3) Head and trunk are widened considerably
(4) Distinct demarcation between body and tail
|140||Identify the tissue shown in the diagram and match with its characteristics and its location
(1) Skeletal muscle, shows striations and closely attached with the bones of the limbs
(2) Smooth muscles, show branching, found in the walls of the heart
(3) Cardiac muscles, unbranched muscles, found in the walls of the heart
(4) Striated muscles, tapering at both-ends, attachedwith the bones of the ribs
|141||Select the correct option with respect to cockroaches
(1) The fore wings are tegmina which are used in flight
(2) Malpighian tubules convert nitrogenous wastes into urea
(3) Males bear short anal styles not present in females
(4) Nervous system comprises of a dorsal nervecord and ten pairs of ganglion
|142||Select the alternative giving correct identification and function of the organelle ‘A’ in the diagram
(1) Endoplasmic reticulum-synthesis of lipids
(2) Mitochondria-produce cellular energy in the form of ATP
(3) Golgi body-provides packaging material
(4) Lysosomes – secrete hydrolytic enzymes
|143||Why is a capsule advantageous to a bacterium?
(1) It allows the bacterium to attach to the surface
(2) It protects the bacterium from desiccation
(3) It provides means of locomotion
(4) It allows bacterium to “hide” from host’s immune system
|144||Which of the following statements about enzymes is wrong?
(1) Enzymes require optimum pH and temperature for maximum activity
(2) Enzymes are denatured at high temperatures
(3) Enzymes are mostly proteins but some are lipids also
(4) Enzymes are highly specific
|145||The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following option is correct?
(1) A is the sulphur containing amino acid – methionine
(2) D is the acidic amino acid – glutamic acid
(3) C is an aromatic amino acid – tryptophan
(4) A is the C – terminal amino acid and D is N terminal amino acid
|146||A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics?
(1) Late prophase – chromosomes move to spindle equator
(2) Metaphase – spindle fibres attached to kinetochores, centromeres split and chromatidsseparate
(3) Metaphase – chromosomes moved to spindle equator chromosomes made up of two sister chromatids
(4) Anaphase – centromeres split and chromatids separate and start moving away
|147||A healthy person eats the following diet – 5 gm raw sugar, 4 gm albumin, 10 gm pure buffalo ghee adultrated with 2 gm vegetable ghee (hydrogenated vegetable oil) and 5 gm lignin. How many calories he is likely to get?
|148||Which enzymes are likely to act on the baked potatoes eaten by a man, starting from the mouth and as it moves down the alimentary canal?
(1) Salivary maltase → carboxy peptidase → trypsinogen
(2) Pancreatic amylase → salivary amylase → lipases
(3) Disaccharidase like maltase → lipases → nucleases
(4) Salivary amylase → pancreatic amylase → disaccharidases
|149||Which one of the following is one of the paths followed by air/O2 during respiration in an adult male Periplaneta americana as it enters the animal body?
(1) Hypopharynx, mouth, pharynx, trachea, tissues
(2) Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells
(3) Mouth, bronchial tube, trachea, oxygen enters cells
(4) Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells
|150||The figure shows a human blood cell. Identify it and give its characteristics.
|151||Figure shows blood circulation in humans with labels A to D. Select the option which gives correct identification of label and functions of the part:
(1) A – Artery – thick walled and blood flows evenly
(2) B – Capillary – thin without muscle layers and wall two cell thick
(3) C – Vein – thin walled and blood flows in jerks/spurts
(4) D – Pulmonary vein – takes oxygenated blood to heart PO2 = 95 mmHg
|152||Select the option which shows correct matching of animal with excretory organs and excretory product
|153||Select the correct statement with respect to disorders of muscles in humans
(1) Rapid contractions of skeletal muscles causes muscle dystrophy
(2) Failure of neuromuscular transmission in myasthenia gravis can prevent normalswallowing
(3) Accumulation of urea and creatine in the joints cause their inflammation
(4) An overdose of vitamin D causes osteoporosis
|154||During muscle contraction in humans the
(1) Actin filaments shorten
(2) Sarcomere does not shorten
(3) A band remain same
(4) A, H and I bands shorten
|155||A sagittal section of human-brain is shown here. Identify at least two labels from A-D.
(1) A – Cerebral hemispheresB – Cerebellum
(2) C – Mid brainD – Cerebellum
(3) A – CerebrumC – Pons
(4) B – Corpus callosum
D – Medulla
|156||The figure shows an axon terminal and synapse.Select the option giving correct identifications oftables A-D(1) A – Axon terminalB – Serotonin complex(2) A – Action potentialC – Neurotransmitter(3) B – NeurotransmitterD – Receptor capsules(4) C – Receptor
D – Synaptic vesicles
|157||Which of the following represents the action of insulin?
(1) Increases blood glucose levels by hydrolysis of glycogen
(2) Increases blood glucose levels by stimulating glucagon production
(3) Decreases blood glucose levels of forming glycogen
(4) Increases blood glucose level by promoting cellular uptake of glucose
(a) Is released by sympathetic fibres
(1) (a) and (d)
(2) (a) and (c)
(3) (b) and (c)
(4) (b) and (d)
|159||The figure shows a section of human ovary. Selectthe option which gives the correct identification ofA and B with function/characteristic
(1) A – Primary oocyte – it is the prophase – I ofthe meiotic division
(2) B – Corpus luteum – secretes progesterone
(3) A – Tertiary follicle – forms Graafian follicle
(4) B – Corpus luteum – secretes estrogen
|160||Select the option which correctly matches the endocrine gland with its hormone and its function
|161||The foetal ejection reflex in humans triggers releaseof
(1) Oxytocin from maternal pituitary
(2) Oxytocin from foetal pituitary
(3) Human Chorionic Gonadotropin (hCG) fromplacenta
(4) Human Placental Lactogen (hPL) from placenta
|162||One of the following is not a method of contraception – which one?
(3) Pills of a combination of oxytocin and vasopressin
(4) Lippes loop
|163||Which one of the following statements is correct regarding Sexually Transmitted Diseases (STD)?
(1) The chances of a 5 year boy contacting a STD are very little
(2) A person may contact syphilis by sharing milk with one already suffering from the disease
(3) Haemophilia is one of the STD
(4) Genital herpes and sickle-cell anaemia are both STD
|164||The stage transferred into the uterus after induced fertilization of ova in the laboratory is
(2) Embryo at 4 blastomere stage
(3) Embryo at 2 blastomere stage
|165||Which one is the incorrect statement with regards to the importance of pedigree analysis?
(1) It helps to trace the inheritance of a specific trait
(2) It confirms that DNA is the carrier of genetic information
(3) It helps to understand whether the trait in question is dominant or recessive
(4) It confirms that the trait is linked to one of the autosome
|166||In our society women are blamed for producing female children. Choose the correct answer for the sex-determination in humans
(1) Due to some defect in the women
(2) Due to some defect like aspermia in man
(3) Due to the genetic make up of the particular sperm which fertilizes the egg
(4) Due to the genetic make up of the egg
|167||Down’s syndrome in humans is due to
(1) Two ‘Y’ chromosomes
(2) Three ‘X’ chromosomes
(3) Three copies of chromosome 21
|168||The figure gives an important concept in the genetic implication of DNA. Fill the blanks A, B and C.
(1) A – Francis CrickB – translationC – transcription
(2) A – Maurice WilkinsB – transcriptionC – translation
(3) A – James WatsonB – replicationC – extension
(4) A – Erwin Chargaff
B – translation
C – replication
|169||In an inducible operon, the genes are
(1) Always expressed
(2) Usually not expressed unless a signal turns them “on”
(3) Usually expressed unless a signal turns them “off”
(4) Never expressed
|170||The finch species of Galapagos Islands are grouped according to their food sources. Which of the following is not a finch food?
(4) Tree buds
|171||Dinosaurs dominated the world in which of the following geological era?
|172||Identify the site where Wuchereria bancrofti is normally found on human body
(1) Lymphatic vessels of the lower limbs
(2) Muscles of the legs
(3) Blood vessels of the thigh region
(4) Skin between the fingers
|173||Which one of the following is a hallucinogenic drug?
(4) Lysergic acid diethylamide
|174||Tissue culture technique can produce infinite number of new plants from a small parental tissue. The economic importance of the technique is in raising
(1) Variants through picking up somaclonal variations
(2) Genetically uniform population identical to the original parent
(3) Homozygous diploid plants
(4) Development of new species
|175||Microbe used for biocontrol of pest butterfly caterpillars is
(1) Trichoderma sp.
(2) Saccharomyces cerevisiae
(3) Bacillus thuringiensis
(4) Streptococcus sp.
|176||The age pyramid with broad base indicates
(1) High percentage of young individuals
(2) High percentage of old individuals
(3) Low percentage of young individuals
(4) A stable population
|177||When man eats fish which feeds on zooplankton which have eaten small plants, the producer in the chain is
(2) Small plants
|178||Which one of the following is not a parasitic adaptation?
(1) Loss of unnecessary sense organs
(2) Development of adhesive organs
(3) Loss of digestive organs
(4) Loss of reproductive capacityAnswer (4)
|179||Climate of the world is threatened by
(1) Increasing concentration of atmospheric oxygen
(2) Decreasing amount of atmospheric oxygen
(3) Increasing amount of atmospheric carbondioxide
(4) Decreasing amount of atmospheric carbondioxide
|180||Which one of the following is not correct as regards the harmful effects of particulate matter of the size 2.5 micro meters or less?
(1) It can be inhaled into the lungs
(2) It can cause respiratory problems
(3) It can directly enter into our circulatory system
(4) It can cause inflammation and damage to the lungs