NEET Test Series-2021 to 2022/NEET Biology MCQS Mock Test Paper 29 Sample Test,Sample questions

Question:
____ is the large shield-shaped cotyledon; the wheat grain possesses in its embryo

1.coleoptile

2. scutellum

3. coleorhiza

4.epiblast

Posted Date:-2021-02-22 04:29:43


Question:
25 individuals in a population are homozygous dominant; then the individuals that are expected to be homozygous recessive are

1.100

2.75

3. 50

4.25

Posted Date:-2021-02-22 04:29:43


Question:
360 out of 1000 individuals in a population have a genotype of AA while 480 have Aa genotype. The rest 160 belong to aa. Frequency of allele A in this population is

1.0.7

2.0.6

3.0.5

4.0.4

Posted Date:-2021-02-22 04:29:43


Question:
 Abscisic acid regulates

1.leaf fall and dormancy

2. cell division

3.cell elongation and cell wall formation

4.shoot elongation

Posted Date:-2021-02-22 04:29:43


Question:
 Free-central placentation is found in_______.

1.Citrus

2. Brassica

3.Argemone

4.Dianthus

Posted Date:-2021-02-22 04:29:43


Question:
A gene locus has two alleles A and a. If the frequency of dominant allele A is 0.4; then the frequency of homozygous dominant; heterozygous and homozygous recessive individuals in the population is

1. 0.16(AA); 0.48(Aa); 0.36(aa)

2.0.16(AA); 0.24(Aa); 0.36(aa)

3. 0.16(AA); 0.36(Aa); 0.48(aa)

4. 0.36(AA); 0.48(Aa); 0.16(aa)

Posted Date:-2021-02-22 04:29:43


Question:
 In men; this is genetically dominant

1.Albinism

2. Haemophilia

3. Rh positive

4.color blindness

Posted Date:-2021-02-22 04:29:43


Question:
A person with antigens A and B and no antibodies belongs to blood group or in which blood group antibodies are absent

1.O

2. AB

3.B

4. A

Posted Date:-2021-02-22 04:29:43


Question:
A sampled “a” population has 36% of homozygous recessive genotype (aa). Then the frequency of allele “a” is

1.0%

2.20%

3. 60%

4.70%

Posted Date:-2021-02-22 04:29:43


Question:
 The ability of single cells to divide and produce all differentiated cells in the entity.

1.Totipotency

2.Multipotent

3.Pluripotent

4.Unipotent

Posted Date:-2021-02-22 04:29:43


Question:
 The recessive character typically is expressed only when present in a double recessive condition. But; a single recessive gene can express itself in humans when genes are found on

1.either on autosome or X chromosome

2.X chromosome of male

3.X chromosome of female

4.any autosome

Posted Date:-2021-02-22 04:29:43


Question:
 These many plants among Salvia; Sesbania; Mustard; Indigofera; Aloe; Allium; groundnut; turnip; and radish gram possess stamens with diverse lengths in their flowers

1.six

2.five

3. four

4.three

Posted Date:-2021-02-22 04:29:43


Question:
 Tulip; onion; cucumber; guava; potato; brinjal; mustard; china rose – amongst these; how many have superior ovary?

1.Six

2.Five

3.Four

4.Three

Posted Date:-2021-02-22 04:29:43


Question:
 Two allelic genes are situated on

1.any two chromosomes

2. two non-homologous chromosomes

3. two homologous chromosomes

4.same chromosomes

Posted Date:-2021-02-22 04:29:43


Question:
 Which of the following is the first transgenic crop?

1.flax

2. tobacco

3.plastic

4.cotton

Posted Date:-2021-02-22 04:29:43


Question:
ABA contains

1.one asymmetric and two symmetric carbon atoms

2.one symmetric and two asymmetric carbon atoms

3.one asymmetric carbon atom

4.one symmetric carbon atom

Posted Date:-2021-02-22 04:29:43


Question:
Abscisic acid treatment results in

1.root elongation

2. stomatal closure

3.stem elongation

4.leaf expansion

Posted Date:-2021-02-22 04:29:43


Question:
Abscission zone can be induced for formation by

1. abscisic acid

2.cytokinins

3.gibberellins

4.auxins

Posted Date:-2021-02-22 04:29:43


Question:
Color of the skin in humans is regulated by

1.polygenic effect

2.lethal genes

3.multiple genes

4.none of the above

Posted Date:-2021-02-22 04:29:43


Question:
Consider a population of sheep to be in Hardy-Weinberg equilibrium. The allele for black wool(w) has an allele frequency of 0.81 while the allele for white wool(W) has an allele frequency of 0.19. Then the percentage of heterozygous individuals in the population is

1. 4%

2.15%

3.31%

4.66%

Posted Date:-2021-02-22 04:29:43


Question:
Dogs have specialized evaporative cooling in the respiratory tract by

1.woofing

2.licking

3.panting

4. sleeping

Posted Date:-2021-02-22 04:29:43


Question:
Dormin is a

1.abscisic acid

2.growth promoter

3.auxin

4. none of these

Posted Date:-2021-02-22 04:29:43


Question:
During the serological test in which anti-human serum is mixed with the blood of another animal; the blood of this animal gives the thickest precipitate

1.mule

2. dog

3.chimpanzee

4.gibbon

Posted Date:-2021-02-22 04:29:43


Question:
Growth of plant tissues in artificial media is called _______.

1.cell hybridization

2.plant tissue culture

3.transgenesis

4.gene expression

Posted Date:-2021-02-22 04:29:43


Question:
The vertebral column provides more strength as a result of 4

1.burantals

2. appendanges

3. frontals

4. curvatures

Posted Date:-2021-02-22 04:29:43


Question:
If a patient with blood group B requires an immediate blood transfusion; this type can be given

1. AB and B

2.AB and A

3.AB and O

4. B and O

Posted Date:-2021-02-22 04:29:43


Question:
In disputed parentage; blood group analysis of mother; alleged father and child can

1.not be of any use

2. only prove that he cannot be the father

3.certainly prove a man to the father

4.none of these

Posted Date:-2021-02-22 04:29:43


Question:
In the Caucasian population of the US; 1 in 2500 babies is affected by a recessive condition – cystic fibrosis. In this population; the frequency of the dominant allele is

1.0.02

2.0.36

3. 0.56

4. 0.98

Posted Date:-2021-02-22 04:29:43


Question:
In tissue culture system; this is the main effect of cytokines

1.shoot elongation

2.adventitious root formation

3.induction of somatic embryos

4.adventitious shoot formation

Posted Date:-2021-02-22 04:29:43


Question:
Inheritance of ABO blood group system is an example of

1.dominance

2.epistasis

3. partial dominance

4. multiple allelism

Posted Date:-2021-02-22 04:29:43


Question:
Keel is the characteristics feature of the flower of_______.

1. tomato

2.aloe

3.Indigofera

4.tulip

Posted Date:-2021-02-22 04:29:43


Question:
Morphactins are

1.synthetic auxins

2.synthetic gibberellins

3. synthetic growth regulators

4.none of these

Posted Date:-2021-02-22 04:29:43


Question:
Perigynous flowers are found in________.

1.Rose

2.China rose

3.Cucumber

4.Guava

Posted Date:-2021-02-22 04:29:43


Question:
Presence of this in the seed is linked with dormancy

1. abscisic acid

2.gibberellic acid

3.starch

4.ethylene

Posted Date:-2021-02-22 04:29:43


Question:
Standard petal of a papilionaceous corolla is known as_______.

1. Carina

2.Corona

3.Vexillum

4.Pappus

Posted Date:-2021-02-22 04:29:43


Question:
These flowers show radial symmetry______.

1.Cassia

2.Pisum

3.Trifolium

4.Brassica

Posted Date:-2021-02-22 04:29:43


Question:
This condition is essential for a population to be in the Hardy-Weinberg equilibrium

1. random mating

2.no mutations

3. large population

4.all of these

Posted Date:-2021-02-22 04:29:43


Question:
This is a cellular totipotency property.

1.plants

2.animals

3. virus

4. none of the above

Posted Date:-2021-02-22 04:29:43


Question:
This is a naturally occurring growth inhibitor

1.NAA

2.IAA

3.GA

4.ABA

Posted Date:-2021-02-22 04:29:43


Question:
This is a plant hormone

1.acetylene

2. dormin

3. formalin

4.all of these

Posted Date:-2021-02-22 04:29:43


Question:
This is not a basic component of culture media for plant cultivation

1.amino acids

2.sucrose/sugar

3.a complex mixture of salts

4.serum albumin

Posted Date:-2021-02-22 04:29:43


Question:
This is wound hormone

1. phyllocaline

2.auxin

3.hormone only

4.necrohormone

Posted Date:-2021-02-22 04:29:43


Question:
This statement about Homeostasis is incorrect

1.because of this; the fluctuations of the internal environment are of extremely narrow range as compared to that of the external environment

2.there is a definite control system regulating the homeostatic activities

3. homeostatic mechanisms keep the internal environment fixed despite wide changes in the external environment

4.all the above

Posted Date:-2021-02-22 04:29:43


Question:
This statement describes the Hardy-Weinberg law the best

1. it is impossible to predict expected allele frequencies mathematically

2.in large populations; dominant alleles become more prevalent

3.allele frequency changes over a period of time in a large population

4.mechanism of inheritance in a large population does not change allele frequency

Posted Date:-2021-02-22 04:29:43


Question:
Tricarpellary; the syncarpous gynoecium is found in these flowers

1.Liliaceae

2. Poaceae

3.Fabaceae

4. Solanaceae

Posted Date:-2021-02-22 04:29:43


Question:
What does p2 in the below mentioned Hardy-Weinberg equation indicate?  (p+q)2 = p2 + 2pq + q2

1. individuals that are heterozygous dominant

2. individuals having a lethal allele

3. individuals that are homozygous dominant

4.individuals that are homozygous recessive

Posted Date:-2021-02-22 04:29:43


Question:
Which of the following is a superbug?

1.virus

2.bacteria

3.transgenic plant

4.worms

Posted Date:-2021-02-22 04:29:43


Question:
Which of the following is not a feature of plant cells?

1.Consists of plastids

2.Cell wall outside the cell membrane

3.Presence of centrioles

4. Cell-cell communication through plasmodesmata

Posted Date:-2021-02-22 04:29:43


Question:
Which of the following plant propagation method uses girdling?

1.cuttings

2.grafting

3.layering

4.both (a) and (b)

Posted Date:-2021-02-22 04:29:43


Question:
Which of the following statement is incorrect about agar?

1. Remains stable at incubation temperature

2.Does not react with media constituents

3.Does not use in micropropagation work

4.Not digested by plant enzymes

Posted Date:-2021-02-22 04:29:43


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