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Which three scientists independently rediscovered Mendel’s work ?
Biology Botany Class 12th NEET UG NEET UG Preparation
Q. 22 of Quiz-1437 (Que-ID : 2940)
Which three scientists independently rediscovered Mendel’s work ?
- Avery, McLeod, McCarty
- Sutton, Morgan and Bridges
- Bateson, Punnet and Bridges
- de Vries, Correns and Tschemark
Ans → (d)de Vries, Correns and Tschemark
Explanation → Three scientists were de Vries, Correns and Tschemark.
This question is taken from this post → Principles of Inheritance and Variations (Class 12th - Biology) Revision Test | MCQs For NEET - attemp/practice
More MCQs in - Principles of Inheritance and Variations (Class 12th - Biology) Revision Test | MCQs For NEET
Q. 1 of Quiz-1437 (Que-ID : 2919)
A recessive allele is expressed in
- heterozygous condition only
- homozygous condition only
- F3 generation
- both homozygous and heterozygous conditions.
Q. 2 of Quiz-1437 (Que-ID : 2920)
The characters which appear in the first filial generation are called
- recessive characters
- dominant characters
- holandric characters
- lethal characters
Q. 3 of Quiz-1437 (Que-ID : 2921)
What will be the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus ?
- 3:01
- 1:02:01
- 1:01
- None of the above
Q. 4 of Quiz-1437 (Que-ID : 2922)
In a monohybrid cross between two heterozygous individuals, percentage of pure homozygous individuals obtained in F1 generation will be
- 25%
- 50%
- 75%
- 100%
Q. 5 of Quiz-1437 (Que-ID : 2923)
What is the probability of production of dwarf offsprings in a cross betweeen two heterozygous tall pea plants ?
- Zero
- 50%
- 25%
- 100%
Q. 6 of Quiz-1437 (Que-ID : 2924)
Which of the following crosses will give tall and dwarf pea plants in same proportions ?
- TT × tt
- Tt × tt
- TT × Tt
- tt × tt
Q. 7 of Quiz-1437 (Que-ID : 2925)
Which of the following is incorrect regarding ZW – ZZ type of sex determination ?
- It occurs in birds and some reptiles.
- Females are homogametic and males are heterogametic.
- 1:1 sex ratio is produced in the offsprings
- All of these
Q. 8 of Quiz-1437 (Que-ID : 2926)
A couple has six daughters. What is the possibility of their having a girl next time ?
- 10%
- 50%
- 90%
- 100%
Q. 9 of Quiz-1437 (Que-ID : 2927)
Number of autosomes present in liver cells of a human female is
- 22 autosomes
- 22 pairs
- 23 autosomes
- 23 pairs
Q. 10 of Quiz-1437 (Que-ID : 2928)
Haplodiploidy is found in
- grasshoppers and cockroaches
- birds and reptiles
- butterflies and moths
- honeybees, ants and waspe.
Q. 11 of Quiz-1437 (Que-ID : 2929)
Rate of mutation is affected by
- temperature
- X rays
- gamma rays
- all of these
Q. 12 of Quiz-1437 (Que-ID : 2930)
Two or more independent genes present on different chromosomes which determine nearly same phenotype are called
- supplementary genes
- complementary genes
- duplicate genes
- none of these
Q. 13 of Quiz-1437 (Que-ID : 2931)
Select the incorrect statement regarding pedigree analysis
- Solid symbols show unaffected individuals
- Proband is the person from which case history starts
- It is useful for genetic counsellors
- It is an analysis of traits in several generations of a family
Q. 14 of Quiz-1437 (Que-ID : 2932)
To determine the genotype of a tall plant of F2 generation, Mendel crossed this plant with a dwarf plant. This cross represents a
- test cross
- back cross
- reciprocal cross
- dihybrid cross
Q. 15 of Quiz-1437 (Que-ID : 2933)
Mendal formulated the law of purity of gametes on the basis of
- monohybrid cross
- dihybrid cross
- test cross
- back cross
Q. 16 of Quiz-1437 (Que-ID : 2934)
The inheritance of flower colour in Antirrhinum (dog flower) is an example of
- incomplete dominance
- co-dominance
- multiple alleles
- linkage
Q. 17 of Quiz-1437 (Que-ID : 2935)
Phenotypic and genotypic ratio is similar in case of
- complete dominance
- incomplete dominance
- over dominance
- epistasis
Q. 18 of Quiz-1437 (Que-ID : 2936)
What can be the blood group of offspring when both parents have AB blood group ?
- AB only
- A, B and AB
- A, B, AB and O
- A and B only
Q. 19 of Quiz-1437 (Que-ID : 2937)
Inheritance of roan coat in cattle is an example of
- incomplete dominance
- codominance
- multiple allelism
- none of these
Q. 20 of Quiz-1437 (Que-ID : 2938)
How many types of gametes can be produced by a diploid organism who is heterozygous for 4 loci ?
- 4
- 8
- 16
- 32
Q. 21 of Quiz-1437 (Que-ID : 2939)
Law of independent assortment can be explained with the help of
- dihybrid
- test cross
- back cross
- monohybrid cross
Q. 22 of Quiz-1437 (Que-ID : 2940)
Which three scientists independently rediscovered Mendel’s work ?
- Avery, McLeod, McCarty
- Sutton, Morgan and Bridges
- Bateson, Punnet and Bridges
- de Vries, Correns and Tschemark
Q. 23 of Quiz-1437 (Que-ID : 2941)
Chromosomal theory of inheritance was given by
- Morgan et al
- Sutton and Boveri
- Hugo deVries
- Gregor J. Mendel
Q. 24 of Quiz-1437 (Que-ID : 2942)
Experimental verification of ‘chromosomal theory of inheritance’ was done by
- Sutton and Boveri
- Morgan et al
- Henking
- Karl Correns
Q. 25 of Quiz-1437 (Que-ID : 2943)
Genes located very close to one another on same chromosome tend to be transmitted together and are called as
- allelomorphs
- identical genes
- linked genes
- recessive genes
More MCQs In - Biology Botany Class 12th NEET UG NEET UG Preparation
Q. 25 of Quiz- (Que-ID : 2843)
Which of the following animals show menstrual cycle?
- Gorillas and chimpanzees
- Monkeys and humans
- Orangutans and monkeys
- All of these
Q. 25 of Quiz- (Que-ID : 3518)
Wild life is destroyed most by
- Lack of proper care
- Mass scale hunting
- Destruction of natural habitats
- Natural calamity
Q. 21 of Quiz- (Que-ID : 3289)
In chlorophyta the mode of sexual reproduction is
- Isogamy
- Anisogamy
- Oogamy
- Isogamy, Anisogamy and oogamy
Q. 14 of Quiz- (Que-ID : 2932)
To determine the genotype of a tall plant of F2 generation, Mendel crossed this plant with a dwarf plant. This cross represents a
- test cross
- back cross
- reciprocal cross
- dihybrid cross
Q. 24 of Quiz- (Que-ID : 3167)
The introduction of t-DNA into plants involves
- Altering the pH of the soil, then heat shocking the plants
- Exposing the plants to cold for a brief period
- Allowing the plant roots to stand in water
- Infection of the plant by Agrobacterium tumefaciens
Q. 3 of Quiz- (Que-ID : 2746)
In adults insufficient thyroxine lead to
- Myxoedema
- Goitre
- Tetany
- Cretinism
Q. 2 of Quiz- (Que-ID : 3045)
Angiosperm pollen is generally released at the
- 1 – celled stage
- 2 – celled stage
- 3 – celled stage
- male gamete formation stage
Q. 22 of Quiz- (Que-ID : 2840)
Strobilanthus kunthiana flowers once in
- 5 years
- 12 years
- 20 years
- 50 years
Q. 2 of Quiz- (Que-ID : 3520)
In Ozone Degradation which element acts as catalyst?
- Chlorine
- Flurine
- Oxygen
- Potassium
Q. 23 of Quiz- (Que-ID : 3341)
Elephantiasis, a chronic inflammation that results in gross deformities is caused by
- Ascaris
- E.coli
- Wuchereria
- Trichophyton
Q. 2 of Quiz- (Que-ID : 3495)
Lion-tailed Macaque is found in:
- Western Ghats
- Caucasus
- Eastern Ghats
- Western Himalaya
Q. 17 of Quiz- (Que-ID : 2885)
Which of the following is correct regarding the consequences of lower population ?
- It increases the poverty of a country
- It leads to shortage of food supply
- It results in unemployment
- All of these
Q. 19 of Quiz- (Que-ID : 3287)
Which one of the following is a vascular cryptogram?
- Cedrus
- Equisetum
- Ginkgo
- Marchantia
Q. 4 of Quiz- (Que-ID : 3522)
Acid Rain comes under which type of pollution?
- Water pollution
- Air pollution
- Soil pollution
- Sound Pollution
Q. 10 of Quiz- (Que-ID : 2853)
An embryo may sometimes develop from any cell of embryo sac other than egg. It is termed as
- apospory
- apogamy
- parthenogenesis
- parthenocarpy
Q. 5 of Quiz- (Que-ID : 3198)
A.T.S. of a young dicot root can be distinguished from that of a young dicot stem by the presence of
- radial arrangement of xylem and phloem
- collateral arrangement of xylem and phloem
- interfascicular cambium
- intrafascicular cambium
Q. 25 of Quiz- (Que-ID : 3543)
Which metal inactivates a catalytic converter?
- Gold
- Iron
- Silvers
- Lead
Q. 1 of Quiz- (Que-ID : 3044)
R.Q is ratio of
- CO2 produced to substarate consumed
- CO2 produced to O2 consumed
- oxygen consumed to CO2 produced
- oxygen consumed to water produced
Q. 18 of Quiz- (Que-ID : 3436)
Bt toxin is :
- intracellular lipid
- Intracellular crystalline protein
- Extracellular crystalline protein
- Lipid
Q. 7 of Quiz- (Que-ID : 2875)
In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube ?
- Embryo only, upto 8 cell stage
- Either zygote or early embryo upto 8 cell stage
- Embro of 32 cell stage
- Zygote only
Q. 11 of Quiz- (Que-ID : 3329)
Humoral immunity is associated with
- T-cells
- B-cells
- macrophages
- both (a) and (b)
Q. 23 of Quiz- (Que-ID : 3416)
Two microbes found to be very useful in genetic, engineering are
- Escherichiya Coli and Agrobacterium tumefaciens
- Virbio chloerae and tailed bacteriophage
- Diplococcus sp and pseudomonas sp
- None of these
Q. 8 of Quiz- (Que-ID : 3301)
According to Lamarckism, long necked giraffes evolved because
- nature selected only long necked ones
- humans preferred only long necked ones
- short necks suddenly changed into long necks
- of stretching of necks over many generations by short necked ones.
Q. 7 of Quiz- (Que-ID : 2675)
Which is also known as reservoir of RBC
- Thymus
- Kidney
- Gall bladder
- Spleen
Q. 19 of Quiz- (Que-ID : 3262)
Water-Vascular system is found in
- Sea-anemone
- Sea-pen
- Sea-cucumber
- Sea-horse
Q. 24 of Quiz- (Que-ID : 3242)
Flowers in which only one set of essential organs is present are said to be
- Polygamous
- Bisexual
- Dioecious
- Unisexual
Q. 17 of Quiz- (Que-ID : 3335)
Injection of antitoxin in tetanus confers which type of immunisation ?
- Active immunisation
- Passive immunisation
- Auto-immunisation
- Humoral immunisation
Q. 16 of Quiz- (Que-ID : 3409)
Golden rice is a promising transgenic crop. When released for cultivation, it will help in :
- High lysin content
- Pest resistance
- High protien content
- High vitamin A content
Q. 22 of Quiz- (Que-ID : 3540)
The agents that bring undesirable changes in the environment arc called
- Pollution
- Fragments
- Pollutants
- None of the above
Q. 21 of Quiz- (Que-ID : 3214)
Bark includes all the tissues
- Lying outside the vascular cambium
- Formed by vascular cambium
- Formed by phellogen
- Phellem & phelloderm
Q. 22 of Quiz- (Que-ID : 3265)
The animals with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage, belong to the phylum
- Annelida
- Mollusca
- Cnidaria
- Echinodermata
Q. 24 of Quiz- (Que-ID : 2792)
As we go from species to kingdom in a taxonomic hierarchy, the number of common characteristics
- Remain same
- Will increase
- Will decrease
- May increase or decrease
Q. 10 of Quiz- (Que-ID : 2703)
How many serially arranged units called vertebrae forms vertebral column
- 23
- 24
- 26
- 28
Q. 5 of Quiz- (Que-ID : 3223)
Which one of the following plants dose not have root – pockets
- Pistia
- Lemna
- Ficus
- Eichhornia
Q. 2 of Quiz- (Que-ID : 2645)
Which among the following have well developed respiratory system
- Cockroaches
- Earthworms
- Sponges
- Mammals
Q. 19 of Quiz- (Que-ID : 3462)
Science linking heredity with environment is:
- Ecology
- Ecophysiology
- Genecology
- Genetics
Q. 16 of Quiz- (Que-ID : 3309)
Which of the following statements is True ?
- Wings to birds and insects are homologous organs.
- Human hands and bird’s wings are analogous organs
- Human hands and bat’s wings are analogous organs.
- Flipper of penguin and dolphin are analogous organs
Q. 1 of Quiz- (Que-ID : 3444)
For human population, the age pyramids generally show age distribution of
- Only males
- Only females
- Of males and females
- None of the above
Q. 24 of Quiz- (Que-ID : 3342)
Which of the following is affected by the infection of Wuchereria bancrofti ?
- Lymphatic vessels
- Respiratory system
- Nervous system
- Blood circulation
Q. 17 of Quiz- (Que-ID : 3360)
Lean meat’ is cosidered to be of high quality because it has
- lesser but easily digestible protein
- lesser lipid content
- more fat that makes the meqt softer
- longer table life due to lesser chances of infection
Q. 16 of Quiz- (Que-ID : 3259)
Which one of the following is NOT a characteristic of phylum Annelida?
- Ventral nerve cord
- Closed circulatory system
- Segmentation
- Pseudocoelom
Q. 6 of Quiz- (Que-ID : 3524)
Bhopal gas tragedy of 1884 took place because methyl isocyanate reacted with
- DDT
- Ammonia
- CO2
- Water
Q. 6 of Quiz- (Que-ID : 3424)
Transgenic Golden Rice has Highly Nutrient value for:
- Lysine
- Methionine
- Glutanin
- Vitamin-A
Q. 14 of Quiz- (Que-ID : 3082)
Who enunciated the law of limiting factor for photosynthesis?
- Robert Emerson
- Ruben
- Blackman
- Calvin
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