NEET MODEL BIOLOGY 3 - Knowledge Vibes

Q1)The genetic defect-adenosine deaminase (ADA) deficiency may be cured permanently by:

Enzyme replacement therapy

Periodic infusion of genetically neared lymphocytes having functional ADA cDNA

Administering adenosine deaminase activators

Introducing bone marrow cells producing ADA into cells at early embryonic stages

Correct! Wrong!

Q2)Infectious proteins are present in:

Gemini viruses

Prions

Viroids

Satellite viruses

Correct! Wrong!

Q3)Select the correct statement from the ones given below with respect to dihybrid cross:

Tightly linked genes on the same chromosome show higher recombination

Genes far apart on the same chromosome show very few recombinations

Genes loosely linked on the same chromosome show similar recombinations as the linked ones

Lightly linked genes on the same chromosome show very few recombination

Correct! Wrong!

Q4)The genotype of a plant showing the dominant phenotype can be determined by:

Test cross

Dihybrid cross.

Pedigree analysis

Back cross

Correct! Wrong!

Q5)Which one of the following cannot be explained on the basis of Mendel's Law of Dominance?

The discrete unit controlling a particular character is called a factor

Out of one pair of factors one is dominant, he other recessive

Alleles do not show any blending and both the characters recover as such in F2 generation

Factors occur in pairs

Correct! Wrong!

Q6)A person with unknown blood group under 72. ABO system has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type offers for blood donation without delay. What would have been the type of blood group of the donor friend?

Type A

Type B

Type AB

Type 0

Correct! Wrong!

Q7)Mutations can be induced with:

Gamma radiation

Infra-Red radiations

I A A

Ethylene

Correct! Wrong!

Q8)When two unrelated individuals or lines are crossed, the per romance of Ft hybrid is often superior to both parents. This phenomenon is called:

morphosis

Heterosis

Transformation

Spacing

Correct! Wrong!

Q9)Which one of the following conditions correctly describes the manner of determining the sex in the given examples?

Homozygous sex chromosomes (XX) produce male in Drosophila

Homozygous sex chromosomes (ZZ) determine female sex in birds

XO Type of sex chromosomes determine male sex in grasshopper

XO condition in humans as found in Turner syndrome determines female sex

Correct! Wrong!

Q10)A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind. They have their first child as a daughter. What are the chances that this child would be colour blind.

25%

50%

100%

Zero percent

Correct! Wrong!

Q11)Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as

Migration

Divergent evolution

Adaptive radiation

Natural selection

Correct! Wrong!

Q12)What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?

Increasing cranial capacity

Upright posture

Shortening of jaws

Binocular vision

Correct! Wrong!

Q13)The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was

Cro-Magnon humans

Ramapithecus

Homo habilis

Neanderthal human

Correct! Wrong!

Q14)Which one of the followings is also called Sewall Wright Effect?

Gene Pool

Gene flow

Genetic Drift

Isolation

Correct! Wrong!

Q15)The idea of Natural selection as the fundamental process of evolutionary changes was reached

Independently by Charles Darwin and Alfred Russel Wallace in 1900.

By Charles Darwin in 1866.

By Alfred Russel Wallace in 1901.

Independently by Charles Darwin and Alfred Russel Wallace in 1859.

Correct! Wrong!

Q16)Which one of the following statements is correct?

There is no evidence of the existence of gills during embryogenesis of mammals

Stem cells are specialized cells

Ontogeny repeats phylogeny

All plant and animal cells are totipotent

Correct! Wrong!

Q17)Jurassic period of the Mesozoic era characterized by

Dinosaurs become extinct and angiosperms appear

Radiation of reptiles and origin of mammal like reptiles

Gymnosperms are dominant plants and first birds appear

Flowering plants and first dinosaurs appear

Correct! Wrong!

Q18)Flowering plants and first dinosaurs appear

Microevolution

Divergent evolution

Convergent evolution

Co-evolution

Correct! Wrong!

Q19)Organic compounds first evolved in earth required for origin of life were

Proteins and Amino acids

Proteins and Nucleic acids

Urea and Amino acids

Urea and Nucleic acids

Correct! Wrong!

Q20)Analogous structures are

Anatomically similar and functioning similarly

Anatomically similar but performing different functions

Anatomically different but performing similar functions

Anatomically different and functioning differently

Select the correct statement from the following: i. Fitness is the end result of the ability to adapt and gets selected by nature

Darwinian variations are small and directionless

Mutations are random and directional

All mammals except whales and camels have seven cervical vertebrae

Correct! Wrong!

Q21)An important evidence in favor of organic evolution is the occurrence of

Homologous organs only

Analogous and vestigial organs

Homologous and vestigial organs

Correct! Wrong!

Q22)Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from nonliving matter

Microbes did not appear in stored meat

Meat was not spoiled, when heated and kept sealed in a vessel

Larva could appear in decaying organic matter

Microbes appeared form unsterilized organic matter

Correct! Wrong!

Q23)Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes. Reason: The first autotrophic organisms were the chemo-autotrophs that never released oxygen.

Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

Assertion is true statement but Reason is false.

Both Assertion and Reason are false statements.

Correct! Wrong!

Q24)Assertion: Coacervates are believed to be the precursors of life. Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.

Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

Assertion is true statement but Reason is false.

Both Assertion and Reason are false statements

Correct! Wrong!

Q25)The tendency of population to remain in genetic equilibrium may be disturbed by

Lack of migration

Lack of mutations

Lack of random mating

None of the above

Correct! Wrong!

Q26)A baby has been born with a small tail. It is the case exhibiting

atavism

mutation

retrogressive evolution

metamorphosis

Correct! Wrong!

Q27)Homologous organs indicate the

Convergent evolution

Parallel evolution

Common descendent i. Natural selection

Correct! Wrong!

Q28)One of the important consequences of geographical isolation is:

Random creation of new species

No change in the isolated fauna

Preventing Speciation

Speciation through reproductive isolation

Correct! Wrong!

Q29)Coacervates were experimentally produced by______.

Fischer and Huxley

Sidney Fox and Oparin

Urey and Miller

Jacob and Monod

Correct! Wrong!

Q30)What is meant by the term Darwin fitness?

The ability to survive and reproduce

High aggressiveness

Healthy appearance

Physical strength

Correct! Wrong!

Q31)Diversification in plant life appeared:

Due to abrupt mutations

Suddenly on earth

By seed dispersal

Due to long periods of evolutionary changes

Correct! Wrong!

Q32)De Vries gave his mutation theory on organic evolution while working on -

Oenothera lamarckiana

Drosophila melanogaster

Pisum sativum

Althea rosea

Correct! Wrong!

Q33)What is common to whale, seal and shark?

Homoeothermic

Seasonal migration

Thick subcutaneous fat

Convergent evolution

Correct! Wrong!

Q34)Chemical reactions could have converted simple organic compounds into ______ for the origin of life.

Micro molecules

Nitrogen, oxygen and other gases

Cells

Macromolecules

Correct! Wrong!

Q35)The concept of chemical evolution is based on

Possible origin of life by combination of chemicals under suitable environmental conditions

Crystallization of chemicals

Interaction of water, air and clay under intense heat

Effect of solar radiation on chemicals

Correct! Wrong!

Q36)The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge, is called

Natural selection

Convergent evolution

Non-random evolution

Adaptive radiation

Correct! Wrong!

Q37)Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as

Genetic flow

Genetic drift

Random mating

Genetic load

Correct! Wrong!

Q38)Fossils are most commonly preserved in

Metamorphic rocks

Igneous rocks

Sedimentary rocks

Any type of rock

Correct! Wrong!

Q39)Divergent evolution of a single group of organisms in a new environment is called ______.

Adaptive radiation

Uniformitarianism

Catastrophism

Convergent evolution

Correct! Wrong!

Q40)Darwin judged the fitness of an individual by

Ability to defend itself

Strategy to obtain food

Number of offspring

Dominance over other individuals

Correct! Wrong!

Q41)According to Darwin, evolution is _______.

A slow, gradual and continuous process.

A sudden but discontinuous process.

A slow and discontinuous process.

A slow, sudden and discontinuous process.

Correct! Wrong!

Q42)In nature, the process by which different organisms evolve similar traits is called ______.

Genetic drift

Artificial selection

Divergent evolution

Convergent evolution

Correct! Wrong!

Q43)Phylogenetic system of classification is based on

Floral characters

Evolutionary relationships

Morphological features

Chemical constituents

Correct! Wrong!

Q44)Selective breeding of organisms (Animal husbandry and plant breeding programs) for specific desirable characteristics are examples of

Mutation

Artificial selection

Reverse evolution

Natural selection

Correct! Wrong!

Q45)Tendrils in plants are an example of

Convergent evolution

Adaptive radiation

Divergent evolution

Co-evolution

Correct! Wrong!

Q46)Small and spherical vessels, bounded by a membrane like layer of amino acids are

Liposomes X

Ribozymes

Protocell

Microspheres

Correct! Wrong!

Q47)Darwin’s Finches are an excellent example of

Connecting links

Adaptive radiation

Seasonal migration

Brood parasitism

Correct! Wrong!

Q48)In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of

Natural selection whereby the darker forms were selected

Appearance of the darker coloured individuals due to very poor sunlight

Protective mimicry

Correct! Wrong!

Q49)Which one of the followings is incorrect about genetic drift?

Random change in allele frequency in a population

Significant only in large populations

A mechanism for the evolution of new species

Founder effect is a special case

Correct! Wrong!

Q50)Which of the aminoacids is not found in Miller’s experiment?

Alanine

Glycine

Aspartic acid

Glutamic acid

Correct! Wrong!

NEET MODEL BIOLOGY 3

A GRADE

B GRADE

C GRADE

D GRADE

Q1)The genetic defect-adenosine deaminase (ADA) deficiency may be cured permanently by:

Q2)Infectious proteins are present in:

Q3)Select the correct statement from the ones given below with respect to dihybrid cross:

Q4)The genotype of a plant showing the dominant phenotype can be determined by:

Q5)Which one of the following cannot be explained on the basis of Mendel's Law of Dominance?

Q7)Mutations can be induced with:

Q8)When two unrelated individuals or lines are crossed, the per romance of Ft hybrid is often superior to both parents. This phenomenon is called:

Q9)Which one of the following conditions correctly describes the manner of determining the sex in the given examples?

Q10)A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind. They have their first child as a daughter. What are the chances that this child would be colour blind.

Q11)Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as

Q12)What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?

Q13)The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was

Q14)Which one of the followings is also called Sewall Wright Effect?

Q15)The idea of Natural selection as the fundamental process of evolutionary changes was reached

Q16)Which one of the following statements is correct?

Q17)Jurassic period of the Mesozoic era characterized by

Q18)Flowering plants and first dinosaurs appear

Q19)Organic compounds first evolved in earth required for origin of life were

Q20)Analogous structures are

Q21)An important evidence in favor of organic evolution is the occurrence of

Q22)Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from nonliving matter

Q23)Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes. Reason: The first autotrophic organisms were the chemo-autotrophs that never released oxygen.

Q24)Assertion: Coacervates are believed to be the precursors of life. Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.

Q25)The tendency of population to remain in genetic equilibrium may be disturbed by

Q26)A baby has been born with a small tail. It is the case exhibiting

Q27)Homologous organs indicate the

Q28)One of the important consequences of geographical isolation is:

Q29)Coacervates were experimentally produced by______.

Q30)What is meant by the term Darwin fitness?

Q31)Diversification in plant life appeared:

Q32)De Vries gave his mutation theory on organic evolution while working on -

Q33)What is common to whale, seal and shark?

Q34)Chemical reactions could have converted simple organic compounds into ______ for the origin of life.

Q35)The concept of chemical evolution is based on

Q36)The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge, is called

Q37)Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as

Q38)Fossils are most commonly preserved in

Q39)Divergent evolution of a single group of organisms in a new environment is called ______.

Q40)Darwin judged the fitness of an individual by

Q41)According to Darwin, evolution is _______.

Q42)In nature, the process by which different organisms evolve similar traits is called ______.

Q43)Phylogenetic system of classification is based on

Q44)Selective breeding of organisms (Animal husbandry and plant breeding programs) for specific desirable characteristics are examples of

Q45)Tendrils in plants are an example of

Q46)Small and spherical vessels, bounded by a membrane like layer of amino acids are

Q47)Darwin’s Finches are an excellent example of

Q48)In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of

Q49)Which one of the followings is incorrect about genetic drift?

Q50)Which of the aminoacids is not found in Miller’s experiment?

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