A green manure is
1. Maize
2. Rice
3.Sorghum
4.Sesbania
Posted Date:-2021-02-21 18:11:33
72 generations of Drosophila were kept in darkness by a scientist. Despite that, the first flies possessed eyes that were normal. This disapproves the theory of
1. Acquired characters
2. Synthetic theory
3. Natural selection
4. use and disuse
Posted Date:-2021-02-21 18:11:33
Acquired characteristics of Lamarck are not inherited and have an evolutionary value. Who gave this statement?
1. Weismann
2.Hugo de Vries
3.TH Morgan
4.Charles Darwin
Posted Date:-2021-02-21 18:11:33
An example of industrial melanism is
1. Mutation
2.Neo Darwinism
3. Neo Lamarckism
4.Natural selection
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 Appropriate use of cow dung is made in
1. medicine
2.fuel
3.manure
4. building/construction material
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 Azolla is used as a biofertilizer as it possesses
1.humus in large quantities
2. rhizobium
3.mycorrhiza
4.cyanobacteria
Posted Date:-2021-02-21 18:11:33
 For paddy, the best fertilizer is
1.Bacillus polymyxa
2. Bacillus megaterium
3.Azolla pinnata
4.Rhizobium meliloti
Posted Date:-2021-02-21 18:11:33
 In children, this disease is caused due to excess nitrate fertilizers usage
1.mumps
2. jaundice
3. septicemia
4.methaemoglobinaemia
Posted Date:-2021-02-21 18:11:33
 Inverted omega shaped organization of the vascular bundles is seen in
1.cycas root
2. cycas stem
3.cycas leaflet
4.ctclas rachis
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 Most likely, people who perform tough manual work can develop
1. thick epidermis on their palms
2. thick subcutaneous fat in their palms
3.greater quantity of melanin all over the body
4.greater number of sweat pores in their hands
Posted Date:-2021-02-21 18:11:33
 Pyrethrin is obtained from
1. Chrysanthemum cinerariifolium
2.Azadirachta indica
3.Urtica dioica
4.Tagetes erecta
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 Who stated this theory – organ in use will develop and if not used will weaken to turn vestigial
1.Mendel
2.De Vries
3. Darwin
4.Lamarck
Posted Date:-2021-02-21 18:11:33
Burning of fossil fuels
1.increased oxygen level
2.increases greenhouse gases
3.decreases greenhouse gases
4. increased ethane level
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CFC have a continuing effect on ozone layer as
1. they are efficiently absorbed by atmospheric water vapours
2. they are being produced in increasing amounts all over the world
3.Cl atoms formed by them are used up in reactions causing degradation of ozone
4.Cl atoms formed by them only act as catalysts in reactions causing degradation of ozone
Posted Date:-2021-02-21 18:11:33
Composited manure is formed from
1. farm and household refuse
2.animal refuse and rotted vegetable
3.organic wastes from where biogas extraction takes place
4. green and farmyard manure
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Correct descending order of relative contribution of various greenhouse gases to total global warming is
1.carbon dioxide; methane; CFCs; nitrous oxide
2. carbon dioxide; methane; nitrous oxide; CFCs
3.carbon dioxide; CFCs; nitrous oxide; methane
4. carbon dioxide; CFCs; methane; nitrous oxide
Posted Date:-2021-02-21 18:11:33
Gas molecules absorbing thermal infrared radiation and present in large quantity to change the climate system is known as
1.ozone gases
2.beta radiations
3.alpha radiations
4.greenhouse gases
Posted Date:-2021-02-21 18:11:33
Germplasm theory against Lamarck’s principle was put forward by
1. Darwin
2. Lamarck
3.Weismann
4.Hugo de Vries
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Green manure plants are
1. Poaceae
2.Solanaceae
3.Leguminosae
4.Compositae
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Greenhouse gases present in very high quantity is
1. ethane
2.carbon dioxide
3.propane
4.methane
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In gymnosperms, the ovules typically are
1. bitegmic and anatropous
2. bitegmic and orthotropous
3.unitegmic and orthotropous
4.unitegmic and anatropous
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In Lamarck’s view, the key of organic evolution is that each progeny
1.shows struggle for existence
2. characters acquired by parental generation are inherited
3.is similar to its parents
4.phylogeny is repeated in its ontogeny
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Mainly, Ozonosphere is depleted by
1.CFCs
2.excess CO2
3.ozone
4.excess CO
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Normal greenhouse effect is essential for sustenance of life on Earth as it has raised the surface temperature of earth by
1. 15 ℃
2. 33 ℃
3. –18 ℃
4.50 ℃
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Phanerograms without the ovaries are
1.angiosperms
2. pteridophytes
3.gymnosperms
4.all the above
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Relative contribution of various greenhouse gases to total global warming will not be
1.CFCs – 14%
2. N2O – 12%
3.Carbon dioxide – 60%
4.Methane – 20%
Posted Date:-2021-02-21 18:11:33
Scientists regarded as Neo Lamarckists are
1.Correns, Hugo de Vries and Tschermak
2.August Weismann and T.H Morgan
3.Hardy Weinberg
4.Kammerer and Mc Dougall
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Tallest known gymnosperm is
1.Pinus
2.Ginkgo
3.Sequoia
4.Ephedra
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The idea of use and disuse of organs was given by
1.Lamarck
2. Morgan
3.Darwin
4.Hugo de Vries
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The one which is not considered as naturally occurring greenhouse gas is
1.ethane
2.methane
3.carbon dioxide
4.nitrous oxide
Posted Date:-2021-02-21 18:11:33
These are features of higher energy level and shorter wavelengths
1.infrared radiation
2.alpha radiation
3.beta radiation
4.ultraviolet radiation
Posted Date:-2021-02-21 18:11:33
This chemical fertilizer is essential for better rhizobial nitrogen fixation
1.calcium
2.potassium
3.sodium
4. phosphorus
Posted Date:-2021-02-21 18:11:33
This is a most popular example of Lamarck
1.Primrose
2.Snakes
3.African Giraffe
4. Both (b) and (c)
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This is not a possible adverse effect of global warming
1. sea level rise
2. an increase of UVB radiation
3.retreat of glaciers
4. extraordinary weather patterns
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This is not included in organic farming
1.crop rotation
2.chemical fertilizer
3.green manures
4. compost and farmyard manures
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This is the most potent greenhouse gas in terms of efficiency
1.N2O
2. CFC
3.C2O
4.CH4
Posted Date:-2021-02-21 18:11:33
This process is functional in removing carbon dioxide from the atmosphere
1. lightning
2.deforestation
3.burning of fossil fuels
4.photosynthesis
Posted Date:-2021-02-21 18:11:33
This statement is false about greenhouse effect
1.life on earth is possible due to greenhouse effect
2.greenhouse effect is a natural process that maintains earth’s temperature
3.increased emission of greenhouse gases is a natural process
4.increased emission of greenhouse gases in the atmosphere increases earth’s temperature
Posted Date:-2021-02-21 18:11:33
Though Cycas has an embryo with two cotyledons, it is not grouped under dicotyledonous plants, as:
1.resembles a palm tree
2. has megasporophyll
3. ovules are naked
4.possesses compound leaves
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Wavelength of infrared radiations is
1.shorter
2.longer
3. infinite
4.zero
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