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AIIMS Biology Mock Test - 4 - NEET MCQ


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30 Questions MCQ Test AIIMS Mock Tests & Previous Year Question Papers - AIIMS Biology Mock Test - 4

AIIMS Biology Mock Test - 4 for NEET 2024 is part of AIIMS Mock Tests & Previous Year Question Papers preparation. The AIIMS Biology Mock Test - 4 questions and answers have been prepared according to the NEET exam syllabus.The AIIMS Biology Mock Test - 4 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for AIIMS Biology Mock Test - 4 below.
Solutions of AIIMS Biology Mock Test - 4 questions in English are available as part of our AIIMS Mock Tests & Previous Year Question Papers for NEET & AIIMS Biology Mock Test - 4 solutions in Hindi for AIIMS Mock Tests & Previous Year Question Papers course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt AIIMS Biology Mock Test - 4 | 60 questions in 60 minutes | Mock test for NEET preparation | Free important questions MCQ to study AIIMS Mock Tests & Previous Year Question Papers for NEET Exam | Download free PDF with solutions
AIIMS Biology Mock Test - 4 - Question 1
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The sexual dimorphism occurs in Anoheles and male can be differentiated from female by

AIIMS Biology Mock Test - 4 - Question 2
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Histamine is secreted by

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AIIMS Biology Mock Test - 4 - Question 3
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The sharpest vision is that of

Detailed Solution for AIIMS Biology Mock Test - 4 - Question 3
Vulture.. They can see clearly about eight times as far as humans can, allowing them to spot and focus in on a rabbit or other animal at a distance of about two miles.
AIIMS Biology Mock Test - 4 - Question 4
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Protostele is the simplest type of stele.
Reason (R): Siphonostele has pith in the centre.
AIIMS Biology Mock Test - 4 - Question 5
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Decomposers are present at benthom of aquatic ecosystems.
Reason (R): The consumers of lakes are different at different depths of lakes.
AIIMS Biology Mock Test - 4 - Question 6
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Mitochondria and chloroplasts are semiautonomous organelles.
Reason(R): They are formed by division of pre-existing organelles as well as contain DNA but lack protein synthesizing machinery.
Detailed Solution for AIIMS Biology Mock Test - 4 - Question 6

Both mitochondria and chloroplasts are double membrane bound, semiautonomous cell organelles. Structure and functions of mitochondria and chloroplasts are partially controlled by nucleus of the cell and partially by themselves. Both of them possess their own DNA and arise from the pre existing cells. 70s type of ribosome is present in both organelles which can help to translate the coded information contained in mRNA and protein synthesis.

AIIMS Biology Mock Test - 4 - Question 7
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Amensalism is a negative interaction between two living individuals.
Reason (R): In amensalism, allochemics are secreted by one individual.
AIIMS Biology Mock Test - 4 - Question 8
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Carnivorous plants are autotrophic in nature.
Reason (R): Carnivorous plants are green plants.
AIIMS Biology Mock Test - 4 - Question 9
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Cytochromes are only found in mitochondria.
Reason (R): Cytochrome b 5 occurs in the endoplasmic reticulum.
AIIMS Biology Mock Test - 4 - Question 10
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Soil particles, particularly clay and organic matter in soil, contain negative charges that attract positively-charged ions such as Ca++, K+ and Mg++.
Reason(R): This attraction keeps these ions at a soil level where they are available to plants.
Detailed Solution for AIIMS Biology Mock Test - 4 - Question 10

Minearal matter occurs in the form of particles in soil. The particels are irregular in outline and enclose spaces for circulation of air and water. Depending upon their size, mineral particles of the soil are called sand, slit and clay. Clay particles are chemically active. Water and chemical nutrients are abundant. Soil is the source of a number of essentail elements to the plnats. They are called plant nutrients or essential mineral elements.

AIIMS Biology Mock Test - 4 - Question 11
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Petroplants produce large amount of latex.
Reason(R): The latex contains long chain hydrocarbons.
Detailed Solution for AIIMS Biology Mock Test - 4 - Question 11

Latex of some plants containing long chain hydrocarbons is considered to be a good substitute for liquid fuels or petroleum. Such plants having large amount of latex with long chain hydrocarbons are called petroplants. Cultivation of petroplants is also a part of energy-cropping.Cultivation of these petrocrops was first of all done by Italians in Ethiopia about fifty years back. But Dr. Calvin is given the credit for the petrocropping. The most common petroplants belong to families of Euphorbiaceae, Asclepiadaceae, Apocynaceae, Compositae, Labiatae, Sapotaceae, Urticaceae, etc., which have property of converting large amount of their photosynthates into latex with hydrocarbons. Their hydrocarbon contents can be increased by genetic manipulations. But commerical production of petroleum or liquid fuel alternative is in early stage. The use of these petroplants mey reduce the pressure on liquid fuel or petroleum.

AIIMS Biology Mock Test - 4 - Question 12
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): The roots of several plants show mycorrhizal association.
Reason (R): Mycorrhizal plants show association with bacteria.
AIIMS Biology Mock Test - 4 - Question 13
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Estuaries are generally productive.
Reason (R): An estuary is formed by river.
AIIMS Biology Mock Test - 4 - Question 14
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): In morula stage, the cells divide without any increase in size.
Reason(R): Zona pellucida remains undivided till cleavage is complete.
Detailed Solution for AIIMS Biology Mock Test - 4 - Question 14

After fertilization the zygote undergoes a number of mitotic divisions known as cleavage. Cleavage produces a solid ball of small blastomeres. Th embryo now looks like a mulberry and is known as morula.Cleavage restores the cell size and nucleocytoplasmic ratio characteristic of the species.
Zona pellucida is a glycoprotein layer found in eggs of mammals. It remains undivided till the cleavage is complete.Blastocyst is a product of cleavage and is surrounded by zona pellucida.

AIIMS Biology Mock Test - 4 - Question 15
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Cattle breeds can be improved by superovulation and embryo transplantation.
Reason(R): Superovulation in high milk-yielding cows is induced by hormonal injection.
Detailed Solution for AIIMS Biology Mock Test - 4 - Question 15

Superovulation is an effort to increase the fertility of cattle breeds. Inducing an animal to ovulate multiple oocytes can translate into producing more offsprings from selected females. Superovulation and embryo transfer involves -Donor cows of particularly fine pedigree are treated with hormones to increase the number of eggs released at ovulation - multiple ovulation (MO), The cows are artificially inseminated using semen from a proven bull; After 6-7 days the embryos are flushed out non-surgically, using a catheter placed into the uterus. This is possible because, in cattle, there is a delay in embryos becoming implanted in the uterine wall. On average, 4-7 embryos are collected; The embryos may then be implanted into recipient cows whose oestrous cycle is at the correct receptive stage - usually as the result of hormonal manipulation; Embryos may be frozen and stored, using techniques similar to those applied to semen, (though precise control of the regime is somewhat more critical).Farmers may, of course, buy-in embryos from sources anywhere in the world to transfer to their own recipient cows. Embryo transfer has the potential to bring about genetic improvement twice as fast as AI alone.

AIIMS Biology Mock Test - 4 - Question 16
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): If the main trunk of Banyan tree is removed it is capable to survive.
Reason (R): Prop roots support the tree.
AIIMS Biology Mock Test - 4 - Question 17
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): 'Lac Operon Model' is applicable only to E.coli.
Reason(R): E.coli lacks a definite nucleus.
Detailed Solution for AIIMS Biology Mock Test - 4 - Question 17

In E. coli, synthesis of β galactosidase, an enzyme meant for hydrolysis of lactose into glucose and galactose, has been studied in considerable detail.
Lactose → β g a l a c t o s i d a s e glucose + galactose
If β galactosides (e.g., lactose) are not supplied to E. coli cells, the presence of β galactosidase is hardly detectable, but as soon as lactose in added, production of enzyme β galactosidase increases as much as 10,000 times. The enzyme quantity again fall down as quickly as the substance (i.e. lactose) is removed. Such enzymes, whose synthesis can be induced by adding, substrate are known as "inducible enzymes". F. Jacob and J. Monod in 1961, on the basis of their study on the inducible system for the synthesis of β galactosidase enzyme in E. coli, proposed a model in order to explain the induction or repression of enzyme synthesis. The model is popularly known as "operon model", E. coli like other bacteria has incipient nucleus, i.e. nucleoid.

AIIMS Biology Mock Test - 4 - Question 18
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Wheat is a caryopsis.
Reason (R): Its pericarp is well differentiated.
AIIMS Biology Mock Test - 4 - Question 19
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Water absorption is reduced by lowering O 2 tension.
Reason (R): The accumulation of C O 2 reduces water absorption.
AIIMS Biology Mock Test - 4 - Question 20
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Cellular endosperm os formed by both nuclear division and wall formation.
Reason (R): It lacks haustoria.
AIIMS Biology Mock Test - 4 - Question 21
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Succulents leaves are found in xerophytic habitats.
Reason (R): Succulents leaves store water and have sunken stomata.
AIIMS Biology Mock Test - 4 - Question 22
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): Action spectrum of photosynthesis compares well with the absorption spectrum of chlorophyll.
Reason(R): Chlorophyll is the only pigment which can absorb and convert light energy into chemical energy.
Detailed Solution for AIIMS Biology Mock Test - 4 - Question 22

An absorption spectrum is a measure of the extent to which a given substance absorbs the light of different colours or wavelengths. An action spectrum is the measure of the efficiency of a process induced by light of different wavelengths but of the same intensity or in other words it is the measure of relative rates of photosynthesis at different wavelengths of light. It is actually a plot of the extent of a response (such as photosynthesis) against different wavelengths of light. A comparison of an action spectrum with the absorption spectrum of a pigment indicates whether or not the pigment is involved in the response. For example, the absorption spectrum of chlorophyll a is very similar to the action spectrum of photosynthesis in most plant tissues. Although, light energy is absorbed by chlorophyll as well as by other accessory pigments, only chlorophyll a participates in conversion of light energy to chemical energy.

AIIMS Biology Mock Test - 4 - Question 23
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In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R).
Read the statements carefully, and mark the correct answer.
Assertion(A): In plant tissue culture, somatic embryos can be induced from any plant cell.
Reason(R): Any viable plant cell can differentiate into somatic embryos.
Detailed Solution for AIIMS Biology Mock Test - 4 - Question 23

Any viable somatic cell of a plant has the ability to form full fledged plants. This ability of plant cell is known as cellular totipotency.

AIIMS Biology Mock Test - 4 - Question 24
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Hyaluronic acid is present in
AIIMS Biology Mock Test - 4 - Question 25
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Blood pressure will be at its highest when
AIIMS Biology Mock Test - 4 - Question 26
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What would happen if NADH₂ is oxidised to form H₂O in a single step-
AIIMS Biology Mock Test - 4 - Question 27
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A major function of the large intestine is to:
AIIMS Biology Mock Test - 4 - Question 28
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Which ratio is constant for DNA ?
Detailed Solution for AIIMS Biology Mock Test - 4 - Question 28
No.. ans is b.. purine =pyrimidine.. so, A+G=C+T..so, A+G/C+T=1,nd for a species, base ratio A+T/G+C = constant..
AIIMS Biology Mock Test - 4 - Question 29
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Which is the most important source of food and fodder?
AIIMS Biology Mock Test - 4 - Question 30
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Which of the following wood is used in making cricket bats?
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