NEET Test Series-2021 to 2022/NEET Biology MCQ set 2 Sample Test,Sample questions

Question:
 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:-2021-12-04 00:49:26


Question:
 Azolla is used as a biofertilizer as it possesses

1.humus in large quantities

2.rhizobium

3.mycorrhiza

4.cyanobacteria

Posted Date:-2021-12-04 00:56:29


Question:
 ‘Saccus’ term is used for

1.exine of pollen grains of Pinus

2.intine of pollen grains of Pinus

3.Wings of pollen grains of Pinus

4.Wings of seeds of Pinus

Posted Date:-2021-12-04 00:38:11


Question:
 Bio ethanol is denatured alcohol, also referred to as

1.methylene

2.ethylene

3.ethylene glycol

4.methylated spirit

Posted Date:-2021-12-04 01:38:12


Question:
 By-products generated during rectification of bio ethanol is utilized as

1.sheep feed

2.cow feed

3. dog feed

4. pig feed

Posted Date:-2021-12-04 01:36:41


Question:
 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:-2021-12-04 01:27:40


Question:
 CFCs are crucial in global warming along with their role in ozone depletion as it

1.known for destroying ozone, which cools the earth

2. blocks ultraviolet-B radiation

3.absorbs solar radiation

4.absorbs earthshine in 10 micron region

Posted Date:-2021-12-04 01:28:34


Question:
 Checking of re radiating heat by atmosphere carbon dioxide, dust, methane, ozone is known as

1.solar effect

2.radioactive effect

3.ozone layer

4. greenhouse effect

Posted Date:-2021-12-04 01:31:33


Question:
 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

Posted Date:-2021-12-04 01:10:41


Question:
 Composition of bone marrow is

1.adipose and areolar tissue

2.adipose, areolar tissue and blood

3.adipose tissue

4.adipose tissue and fibroblasts

Posted Date:-2021-12-04 01:44:27


Question:
 Flowers and cones are similar because

1.both assist seed dispersal

2.both are responsible in attracting insects to pollinate

3. both are shoy and bright

4.both are reproductive structures

Posted Date:-2021-12-04 00:38:55


Question:
 For paddy, the best fertilizer is

1.Bacillus polymyxa

2.Bacillus megaterium

3. Azolla pinnata

4.Rhizobium meliloti

Posted Date:-2021-12-04 01:09:47


Question:
 Germplasm theory against Lamarck’s principle was put forward by

1.Darwin

2.Lamarck

3.Weismann

4.Hugo de Vries

Posted Date:-2021-12-04 00:53:40


Question:
 Green manure plants are

1.Poaceae

2.Solanaceae

3.Leguminosae

4.Compositae

Posted Date:-2021-12-04 00:54:55


Question:
 In gymnosperms, the ovules typically are

1.bitegmic and anatropous

2. bitegmic and orthotropous

3.unitegmic and orthotropous

4.unitegmic and anatropous

Posted Date:-2021-12-04 00:43:24


Question:
 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

Posted Date:-2021-12-04 00:48:46


Question:
 In the regulation of gene expression, this is an incorrect statement

1.in the bacteria, it permits to replicate with no control

2. in the bacteria, it permits to adapt to changing environments

3. permits the maintenance of homeostasis is multicellular entities

4.permits the functioning of multicellular entities on the whole

Posted Date:-2021-12-04 00:34:53


Question:
 Inverted omega shaped organization of the vascular bundles is seen in

1.cycas root

2.cycas stem

3.cycas leaflet

4.ctclas rachis

Posted Date:-2021-12-04 00:45:02


Question:
 Mycoplasma is

1.eukaryotic and unicellular

2.prokaryotic and unicellular

3.prokaryotic and multicellular

4.eukaryotic and multicellular

Posted Date:-2021-12-04 00:19:43


Question:
 Nasal septum gets damaged. Its recovery requires cartilage known as

1.elastic cartilage

2.fibrous cartilage

3.calcified cartilage

4.hyaline cartilage

Posted Date:-2021-12-04 01:46:13


Question:
 Seemingly, the vertebrate cells contain a protein which binds to clusters of 5-methylcytosine ensuring that the bound gene stays in the “off” position. This regulation on the role of gene regulation is an outcome of

1.Methylation

2.Translation

3.Enhancer expression

4.operator suppression

Posted Date:-2021-12-04 00:32:08


Question:
 Skeletal muscle bundles are held together by a common connective tissue layer known as

1.Fascia

2.Perimysium

3.Aponeurosis

4.endomysium

Posted Date:-2021-12-04 01:43:44


Question:
 The idea of use and disuse of organs was given by

1.Lamarck

2.Morgan

3.Darwin

4.Hugo de Vries

Posted Date:-2021-12-04 00:50:54


Question:
 The one which is not considered as naturally occurring greenhouse gas is

1.ethane

2.methane

3.carbon dioxide

4.nitrous oxide

Posted Date:-2021-12-04 01:20:04


Question:
 These are osmotically inactive

1.nostoc

2.mycoplasma

3.bacteria

4.all of these

Posted Date:-2021-12-04 00:24:44


Question:
 This chemical fertilizer is essential for better rhizobial nitrogen fixation

1.calcium

2.potassium

3.sodium

4.phosphorus

Posted Date:-2021-12-04 00:55:40


Question:
 This is a bacteria without cell wall

1.cyanobacteria

2.mycoplasma

3.viroid

4.virus

Posted Date:-2021-12-04 00:26:10


Question:
 This is also called as a bio gas

1.bio butanol

2.biodiesel

3.bio ethanol

4.bio methane

Posted Date:-2021-12-04 01:35:04


Question:
 This is not included in organic farming

1. crop rotation

2.chemical fertilizer

3.green manures

4.compost and farmyard manures

Posted Date:-2021-12-04 01:07:09


Question:
 This species of mycoplasma causes human sterility

1.T.mycoplasma

2.M.fermentans

3.M.hominis

4.all of the above

Posted Date:-2021-12-04 00:22:15


Question:
 Though Cycas has an embryo with two cotyledons, it is not grouped under dicotyledonous plants, as:

1.ovules are naked

2.possesses compound leaves

3.has megasporophyll

4.resembles a palm tree

Posted Date:-2021-12-04 00:41:48


Question:
A genomic DNA possesses functioning units, a group of genes under the influence of promoters known as

1.genes

2.operons

3.anticodon

4.codon

Posted Date:-2021-12-04 00:29:50


Question:
A green manure is

1.Maize

2.Rice

3.Sorghum

4.Sesbania

Posted Date:-2021-12-04 01:11:25


Question:
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:-2021-12-04 00:51:37


Question:
All regulatory proteins possess a common DNA binding motif that are specific flexess in their protein chains permitting them to interlock with

1.the outside groove of DNA helix

2.the major groove of DNA helix

3.the minor groove of DNA helix

4.inner groove of DNA helix

Posted Date:-2021-12-04 00:30:36


Question:
An autotrophic, prokaryotic, nitrogen fixing symbiont is present in

1.Cicer

2.Cycas

3.Sequoia

4.Pinus

Posted Date:-2021-12-04 00:39:34


Question:
An example of industrial melanism is

1.Mutation

2.Neo Darwinism

3.Neo Lamarckism

4.Natural selection

Posted Date:-2021-12-04 00:47:12


Question:
Appropriate use of cow dung is made in

1.medicine

2.fuel

3.manure

4. building/construction material

Posted Date:-2021-12-04 01:07:54


Question:
Basic tools of genetic regulation is the ability of some proteins to bind to specific

1.regulatory DNA sequences

2.regulatory RNA sequences

3.enzymes of cells

4.promoter portions of genes

Posted Date:-2021-12-04 00:34:08


Question:
Bio ethanol is mixed with ________ to prepare transport fuel

1.oil

2.petrol

3.kerosene

4.diesel

Posted Date:-2021-12-04 01:37:24


Question:
Biomass is used in the production of

1.fibers

2.chemicals

3.transportation fuels

4.biochemicals

Posted Date:-2021-12-04 01:33:05


Question:
Burning of fossil fuels

1.increased oxygen level

2.increases greenhouse gases

3.decreases greenhouse gases

4.increased ethane level

Posted Date:-2021-12-04 01:17:33


Question:
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:-2021-12-04 01:26:44


Question:
Eukaryotic entities

1.in the presence of cAMP molecule, it carries out protein synthesis

2.have only operons assisting in gene expression

3.transcription takes place in the nucleus and translation in the cytoplasm

4.transcription occurs in the cytoplasm and translation in nucleus

Posted Date:-2021-12-04 00:28:58


Question:
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:-2021-12-04 01:16:46


Question:
Greenhouse gases present in very high quantity is

1.ethane

2.carbon dioxide

3.propane

4.methane

Posted Date:-2021-12-04 01:15:25


Question:
In bio methane, the percentage of carbon dioxide is

1.55-60

2. 35-45

3.30-40

4.32-43

Posted Date:-2021-12-04 01:36:00


Question:
In children, this disease is caused due to excess nitrate fertilizers usage

1.mumps

2.jaundice

3.septicemia

4.methaemoglobinaemia

Posted Date:-2021-12-04 01:08:48


Question:
In eukaryotes and bacteria, most common form of regulation is

1.promoter control

2. translation control

3.repressor control

4.transcriptional control

Posted Date:-2021-12-04 00:36:32


Question:
In mycoplasma, the elementary cell body performs the function of

1.respiration

2.reproduction

3.excretion

4.metabolism

Posted Date:-2021-12-04 00:23:00


Question:
Little leaf of brinjal is caused by

1.algae

2.fungus

3.mycoplasma

4.virus

Posted Date:-2021-12-04 00:26:46


Question:
Mainly, Ozonosphere is depleted by

1.CFCs

2. excess CO2

3.ozone

4.excess CO

Posted Date:-2021-12-04 01:25:03


Question:
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:-2021-12-04 00:47:56


Question:
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 ℃

Posted Date:-2021-12-04 01:13:47


Question:
Phanerograms without the ovaries are

1.angiosperms

2.pteridophytes

3.gymnosperms

4.all the above

Posted Date:-2021-12-04 00:45:50


Question:
Pick the pair that is incorrectly matched

1.Cycas – coralloid roots

2.Abies – wood tar, wood gas

3.Pinus – Mycorrhizal roots

4.Sequoia – Red wood tree

Posted Date:-2021-12-04 00:40:24


Question:
Production of bio ethanol is through fermentation of ________ and starch components

1.alcohol

2.sugar

3.milk

4.acid

Posted Date:-2021-12-04 01:34:13


Question:
Pyrethrin is obtained from

1.Chrysanthemum cinerariifolium

2.Azadirachta indica

3.Urtica dioica

4.Tagetes erecta

Posted Date:-2021-12-04 00:57:17


Question:
Regulatory proteins turn transcription off through binding to a site rapidly at the front of the promoter and many times even overlaps the promoter, this site is the

1. regulatory site

2.operator site

3. suppressor site

4. transcriptional control site

Posted Date:-2021-12-04 00:31:18


Question:
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:-2021-12-04 01:22:38


Question:
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

Posted Date:-2021-12-04 00:52:55


Question:
Surplus of atmospheric carbon dioxide causes an increase in the greenhouse effect as carbon dioxide

1. is opaque to infrared rays

2.is not opaque to infrared rays

3.precipitates dust in the atmosphere

4.reduce atmospheric pressure

Posted Date:-2021-12-04 01:30:50


Question:
Tallest known gymnosperm is

1.Pinus

2.Ginkgo

3.Sequoia

4.Ephedra

Posted Date:-2021-12-04 00:44:10


Question:
Tendons and ligaments are

1.muscular tissue

2.connective tissue

3. skeletal tissue

4.fibrous connective tissue

Posted Date:-2021-12-04 01:42:56


Question:
The aerobic digestion of sewage is utilized in the production of

1.metal articles

2.bio fuels

3.biomass

4.synthetic fuels

Posted Date:-2021-12-04 01:41:00


Question:
The “witches broom” of legumes is caused by a

1.fungus

2.bacterium

3.mycoplasma

4.virus

Posted Date:-2021-12-04 00:20:49


Question:
The formation of erythrocytes in foetus takes place in

1. red bone marrow

2.sarcoplasm

3.liver and spleen

4.blood

Posted Date:-2021-12-04 01:45:17


Question:
The transcriptional gene control in eukaryotes is mediated by

1.metabolites that bind to the cis-acting elements

2.trans-acting factors failing to bind to cis-acting elements

3.trans-acting factors binding to cis-acting elements

4.repressor proteins that bind to operator sites

Posted Date:-2021-12-04 00:33:28


Question:
There are these many histones in the core of a nucleosome

1.8

2.6

3.4

4.2

Posted Date:-2021-12-04 00:35:21


Question:
These are features of higher energy level and shorter wavelengths

1.infrared radiation

2.alpha radiation

3.beta radiation

4.ultraviolet radiation

Posted Date:-2021-12-04 01:12:53


Question:
This forestry material is used as biomass

1.fish oil

2.logging residues

3.manure

4.tallow

Posted Date:-2021-12-04 01:40:20


Question:
This is a most popular example of Lamarck

1.Primrose

2.Snakes

3.African Giraffe

4.Both (b) and (c)

Posted Date:-2021-12-04 00:50:08


Question:
This is an example of starch crops biomass feed stocks

1.corn stover

2. wheat straw

3.orchard prunings

4.sugar cane

Posted Date:-2021-12-04 01:41:49


Question:
This is called “Jockers of microbiological park”

1.nostoc

2.mycoplasma

3.bacteria

4.none of these

Posted Date:-2021-12-04 00:23:54


Question:
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

Posted Date:-2021-12-04 01:25:51


Question:
This is the most potent greenhouse gas in terms of efficiency

1. N2O

2.CFC

3.C2O

4.CH4

Posted Date:-2021-12-04 01:18:23


Question:
This is the smallest organism capable of autonomous growth and reproduction

1.mycoplasma

2.viroid

3.virus

4.none of these

Posted Date:-2021-12-04 00:27:31


Question:
This process is functional in removing carbon dioxide from the atmosphere

1.lightning

2.deforestation

3.burning of fossil fuels

4.photosynthesis

Posted Date:-2021-12-04 01:24:19


Question:
This serves as a connecting link between the angiosperms and gymnosperms

1.Gnetales

2.Coniferales

3.Ginkgoales

4.Cycadales

Posted Date:-2021-12-04 00:41:02


Question:
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:-2021-12-04 01:19:20


Question:
Ultraviolet radiations from sunlight cause a reaction producing

1.carbon monoxide

2.ozone

3.fluorides

4.sulphur dioxide

Posted Date:-2021-12-04 01:30:10


Question:
Vancomycin and Penicillin do not affect the mycoplasma as

1.there is no Golgi body

2.there are no mitochondria

3. there is no nucleus

4. there is no cell wall

Posted Date:-2021-12-04 00:25:30


Question:
Wavelength of infrared radiations is

1.shorter

2.longer

3.infinite

4.zero

Posted Date:-2021-12-04 01:14:39


Question:
Which of the following is not a major greenhouse gas?

1.ozone

2. water vapour

3.methane

4.carbon dioxide

Posted Date:-2021-12-04 01:29:31


Question:
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:-2021-12-04 00:52:13


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