Which One Of The Following Is Heterosporous?
a) Adiantum b) Salvinia c) Dryopteris d) Equisetum Answer: b) Salvinia
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Select One Of The Following Important Features Distinguishing Gnetum From Cycas And Pinus And Showing Affinities With Angiosperms?
a) Perianth and two integuments b) Presence of vessel elements and absence of archegonia c) Absence of resin duct and... View Article
The Kind Of Tissue That Forms The Supportive Structure In Our Pinna (External Ears) Is Also Found In?
a) vertebrae b) tip of the nose c) ear ossicles d) nails Answer: b) tip of the nose
Which One Of The Following Correctly Describes The Location Of Some Body Parts In The Earthworm Pheretima?
a) two pairs of accessory glands in 16-18 segments b) two pairs of testes in 10th and11th segments c) one... View Article
Point Mutation Involves?
a) insertion b) deletion c) duplication d) change in single base pair Answer: d) change in single base pair
Reduction In Vascular Tissues, Mechanical Tissue And Cuticle Is Characteristic Of?
a) Xerophytes b) Hydrophytes c) Epiphytes d) Mesophytes Answer: b) Hydrophytes
An Example Of A Seed With Endosperm, Perisperm And Caruncle Is?
a) cotton b) castor c) lilly d) coffee Answer: b) castor
The Bacterium Bacillus Thuringiensis Is Widely Used In Contemporary Biology As?
a) indicator of water pollution b) source of industrial enzyme c) agent of production of dairy products d) insecticide Answer:... View Article
Which One Of The Following Acids Is A Derivative Of Carotenoids?
a) Indole Butyric acid b) Abscisic acid c) Gibberellic acid d) Indole-3-acetic-acid Answer: b) Abscisic acid
Which One Of The Following Types Of Organisms Occupy More Than One Trophic Level In A Pond Ecosystem?
a) Phytoplankton b) Frog c) Zooplankton d) Fish Answer: d) Fish
Whose Experiments Cracked The DNA And Discovered Unequivocally That A Genetic Code Is A “Triplet”?
a) Nirenberg and Mathaei b) Beadle and Tatum c) Morgan and Sturtevant d) Hershey and Chase Answer: a) Nirenberg and... View Article
Which Of The Following Is A Symbiotic Nitrogen Fixer?
a) Glomus b) Azolla c) Frankia d) Azotobacter Answer: c) Frankia
Elbow Joint Is An Example Of?
a) pivot joint b) ball and socket joint c) gliding joint d) hinge joint Answer: d) hinge joint
Middle Lamella Is Composed Mainly Of?
a) calcium pectate b) Muramic acid c) Hemicellulose d) Phosphoglycerides Answer: a) calcium pectate
A Change In The Amount Of Yolk And Its Distribution In The Egg Will Affect?
a) formation of zygote b) fertilization c) number of blastomeres produced d) pattern of cleavage Answer: d) pattern of cleavage
Which One Of The Following Pairs Of Food Components In Humans Reaches The Stomach Totally Undigested?
a) protein and starch b) starch and cellulose c) fat and cellulose d) starch and fat Answer: c) fat and... View Article
Transgenic Plants Are The Ones?
a) produced by a somatic embryo in artificial medium b) grown in artificial medium after hybridization in the field c)... View Article
In The Case Of Peppered Moth (Biston Betularia) The Black-coloured Form Became Dominant Over The Light-coloured Form In England During The Industrial Revolution. This Is An Example Of?
a) natural selection whereby the darker forms were selected b) inheritance of darker colour character acquired due to the darker... View Article
Somaclones Are Obtained By?
a) Tissue culture b) Genetic engineering c) Irradiation d) Plant breeding Answer: a) Tissue culture
In Barley Stem Vascular Bundles Are?
a) open and scattered b) closed and radial c) open and in a ring d) closed and scattered Answer: d)... View Article
