Ques. The heart sound “DUP” in produced when
(a) Mitral valve opens
(b) Mitral valve closes
(c) Semilunar valve at the base of aorta closes
(d) Tricuspid valve opens
Ques. Herbicide interfere with
(a) Carbon dioxide absorption
(b) Water absorption
(c) Translocation of sugar
(d) Photolysis of water
Ques. The cells primarily involved in immune mechanism are
(a) Eosinophils
(b) Thrombocytes
(c) Lymphocytes
(d) Erythrocytes
Ques. Normally haemopoesis in frog occurs in
(a) Liver and spleen
(b) Liver
(c) Spleen
(d) Bone marrow
Ques. Nucleus of WBC is
(a) Lobed
(b) Spindle shaped
(c) Oval
(d) Round
Ques. Residual volume in mammalian lungs is
(a) The total maximum air that can be expired from the lungs
(b) The air taken in during normal inspiration
(c) The air that is left in the lungs even after possible forceful expiration
(d) The air that can be expelled out forcibly after the normal expiration
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Ques. Contraction of internal intercostal muscles will
(a) Pull the ribs backward and inward
(b) Raises the air pressure in lungs above atmospheric pressure
(c) Decrease the thoracic cavity
(d) All the above
Ques. In which of the following situations the transpiration would be little affected by change in humidity or temperature
(a) Clear sunny day
(b) Cold chilly day
(c) Cloudy day
(d) Winter and summer nights
Ques. Vasa-efferentia connect the
(a) Testes with epididymis
(b) Kidneys with cloaca
(c) Testes with urinogenital duct
(d) None of these
Ques. Respiration in methane forming bacteria and denitrifying bacteria is
(a) Aerobic
(b) Facultative aerobic
(c) Facultative anaerobic
(d) Obligately aerobic
Ques. The inner part of the stapes of the ear ossicle is attached with
(a) Malleus
(b) Incus
(c) Fenestra ovalis
(d) Tympanic membrane
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Ques. Heterocysts are
(a) Green and thin-walled
(b) Colourless and thin-walled
(c) Green and thick-walled
(d) Colourless and thick-walled
Ques. Which of the following diseases is caused by a fungus
(a) Tuberculosis
(b) Black rust of wheat
(c) Small pox
(d) Cancer
Ques. First social life is seen in
(a) Peking man
(b) Neanderthal man
(c) Cro magnon
(d) Java man
Ques. The ovuliferous scale of Pinus is part of
(a) Microsporophyll
(b) Ovule
(c) Dwarf shoot
(d) Megasporophyll
Ques. Pathogens were discovered by
(a) Edward Jenner
(b) William Harvey
(c) Pastuer
(d) Robert Koch
Ques. Neomycin is extracted from
(a) Streptomyces griseus
(b) Streptomyces venezuelae
(c) Streptomyces fradiae
(d) Streptomyces rimosus
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Ques. Moonga silk worm is
(a) Antheraea Perenyi
(b) Antheraea assamia
(c) Antheraea mylitta
(d) Attacus atlus
Ques. In Smilax, which of the following part is modified into tendril
(a) Leaves
(b) Stipule
(c) Stem
(d) Leaflet
Ques. Which of the following drug taken with alcohol may have dangerous effects?
(a) Morphine
(b) Oplium
(c) Aspirin
(d) None
Ques. Which organism is useful in the preparation of Roquefort cheese?
(a) Rhizopus
(b) Yeast
(c) Penicillium
(d) Aspergillus
Ques. Yoghurt is produced by
(a) Lactobacillus bulgaricus only
(b) Lactobacillus acidophilus
(c) Streptococcus thermophilus only
(d) Both Lactobacillus bulgaricus and streptococcus thermophilus
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Ques. Energy cropping does not involve raising of
(a) Potato
(b) Sugar beet
(c) Euphorbia
(d) Tapioca
Ques. How many meiotic divisions are necessary for the formation of 100 pollen grains?
(a) 50
(b) 100
(c) 125
(d) 25
Ques. Which of the following tissues is specialized for the storage of triglyceride?
(a) Adipoe tissue
(b) Mesenchyme
(c) Mucous connective tissue
(d) None of these
Ques. Vertebrates other than birds and mammals can change the colour of skin to certain extent, because these possess
(a) Melanosomes
(b) Melanocytes
(c) Chromatophores
(d) Melanophages
Ques. Stele of fern (Pteridium / Pteris) rhizome is
(a) Dictyostele
(b) Siphonostele
(c) Polystelic dictyostele
(d) Polyarch endarch
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Ques. Increase in population in a geometrical progression while increase in production in an arithmetic progression was proposed by
(a) Darwin
(b) Haldane
(c) Malthus
(d) Acilla guillard
Ques. A free living bacterium capable of fixing atmospheric nitrogen is
(a) Azotobacter
(b) Streptococcus
(c) Staphylococcus
(d) None of these
Ques. Migration of Hilsa is
(a) Catadromous
(b) Latitudianl
(c) Anadromous
(d) None of the above
Ques. Fibrous roots develop in maize from
(a) Lower nodes
(b) Upper nodes
(c) Upper internodes
(d) None of these
Ques. What is the effects of nicotine on human body?
(a) It increase in release of adrenaline
(b) Relax muscles
(c) Decreases foetal growth
(d) All the above
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Ques. HMP is a bioenergy obtained from
(a) Draught animal power
(b) Animal wastes
(c) Human muscle power
(d) None of these
Ques. The function of enterokinase is to change
(a) Prorennin into rennin
(b) Pepsinogen into pepsin
(c) Casein into calcium paracaseinate
(d) Trypsinogen into trypsin
Ques. What base is responsible for hot spots for spontaneous point mutations?
(a) 5-Bromouracil
(b) 5-Methy1 cytosine
(c) Adenine
(d) Guanine
Ques. Which bone is found in pectoral girdle of all mammals?
(a) Scapula
(b) Ilium
(c) Coranoid
(d) Pubis
Ques. In hypertonic solution a cell’s water potential
(a) Increase
(b) Decreases
(c) First increases and then decreases
(d) Remains unchanged
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Ques. The term root pressure was coined by
(a) Stephen hales
(b) Atkins
(c) Renner
(d) Kramer
Ques. Extra drive to inspiration is provided by
(a) Pneumotaxic centre
(b) Inspiratory centre
(c) Abodominal muscles
(d) Apneustic centre
Ques. Secretion of which gland have high percentage of fructose
(a) Prostate gland
(b) Cowper’s gland
(c) Seminal vesicle
(d) Tyson gland
Ques. The organism in which Kreb’s cycle does not occur in mitochondria is
(a) Yeast
(b) E. coli
(c) Ulothrix
(d) Molds
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Ques. Which statement is true?
(a) All motor nerve fibres leave spinal cord via ventral root
(b) All arteries carry pure blood
(c) Red blood corpuscles are nucleated in all verterbrates
(d) Unine of all verterbrates is same
Ques. Ulothrix produces
(a) Quadriflagellated macrozoospores only
(b) Quadriflagellated microzoospores only
(c) Biflagellated microzoospores only
(d) All the above types of zoospores
Ques. How many different gametes could result from the genotype – AaBbCC
(a) 2
(b) 4
(c) 6
(d) 8
Ques. Which of the following is not connected with spore dispersal in Funaria
(a) Peristome
(b) Foot
(c) Seta
(d) Annulus
Ques. Appearance of some ancestral traits in certain individual of a species is called
(a) Recapitulation
(b) Reversion
(c) Homology
(d) Analogy
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Ques. Bidder’s canal is found in
(a) Kidney of man
(b) Kidney of camel
(c) Kidney of rabbit
(d) None of these
Ques. The stimulants present in tea, cocoa and cola drink
(a) Cocaine
(b) Tannin
(c) Opium
(d) Caffeine
Ques. In Genetic Engineering for cutting DNA, which of the following enzyme is used?
(a) RNA polymerase
(b) Restrictin endonuclease
(c) Ligase
(d) Amylase
