MCQOPTIONS
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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 5551. |
Which is mental disease |
| A. | Tetanus |
| B. | Neurosis |
| C. | Drug dependence |
| D. | Alcoholism |
| Answer» C. Drug dependence | |
| 5552. |
Social therapy of mental illness is required for |
| A. | Treatment of psychosis |
| B. | Maintenance of community health |
| C. | Rehabilitation of mentally ill persons |
| D. | Prevention of addiction |
| Answer» D. Prevention of addiction | |
| 5553. |
A child would develop mental illness if one does not get |
| A. | Affection |
| B. | Encouragement |
| C. | Guidance and discipline |
| D. | All the above |
| Answer» E. | |
| 5554. |
Which are intimately related |
| A. | Disease and health |
| B. | Body and health |
| C. | Body and mind |
| D. | Body and spiritual values |
| Answer» D. Body and spiritual values | |
| 5555. |
Who worked on poky strain of Neurospora |
| A. | Marry and Mitchell |
| B. | Ruth Sagar |
| C. | Khorana |
| D. | Crick |
| Answer» B. Ruth Sagar | |
| 5556. |
A farmer crossed a walnut combed chicken with a single combed one and obtained all walnut combed chickens in \[{{F}_{1}}\]. The genotype of the parents was [AIIMS 1993] |
| A. | Rr Pp × rr pp |
| B. | RR PP × rr pp |
| C. | RR pp × rr pp |
| D. | RR Pp × rr pp |
| Answer» C. RR pp × rr pp | |
| 5557. |
In pea hybrids between red flowered and white flowered strains were crossed back to pure red flowered strain. The progeny of this cross will have [MP PMT 1990] |
| A. | Red flowers only |
| B. | White flowers only |
| C. | Equal number of red and white flowers |
| D. | Mostly red flowers |
| Answer» B. White flowers only | |
| 5558. |
If in a dihybrid cross Mendel had used two such characters which have linked, he would have faced difficulty in explaining the results n the basis of his [CBSE PMT 1990] |
| A. | Law of segregation |
| B. | Law of multiple factor hypothesis |
| C. | Law of independent assortment |
| D. | Law of dominance |
| Answer» D. Law of dominance | |
| 5559. |
The crossing of a homozygous tall plant with a dwarf in \[{{F}_{2}}\] would yield plants in the ratio of [CPMT 1985] |
| A. | All homozygous dwarf |
| B. | All heterozygous tall |
| C. | One homozygous tall, one homozygous dwarf and two heterozygous tall |
| D. | Two tall and two dwarf |
| Answer» D. Two tall and two dwarf | |
| 5560. |
Mendel crossed a pure white-flowered recessive pea plant with a dominant pure red-flowered plant. The first generation of hybrids from the cross should show [CPMT 1989, 91; RPMT 1995; MH-CET 2002; DPMT 2003] |
| A. | 50% white-flowered and 50% red-flowered plants |
| B. | All red-flowered plants |
| C. | 75% red-flowered and 25% white-flowered plants |
| D. | All white-flowered plants |
| Answer» C. 75% red-flowered and 25% white-flowered plants | |
| 5561. |
The percentage of heterozygous individuals obtained in \[{{F}_{2}}\] generation from selfing the plants with genotype Rr would be [AIIMS 1994] |
| A. | 24 |
| B. | 50 |
| C. | 75 |
| D. | 100 |
| Answer» C. 75 | |
| 5562. |
Self-pollination between Tt and Tt plants results into genotype ratio of |
| A. | 0.125694444444444 |
| B. | 0.0430671296296296 |
| C. | 0.04375 |
| D. | 0.166666666666667 |
| Answer» C. 0.04375 | |
| 5563. |
In hybridization, Tt × tt give rise to the progeny of ratio [CBSE PMT 1999; RPMT 1999; BVP 2000; Pb. PMT 2000; BHU 2003] |
| A. | 0.0423611111111111 |
| B. | 0.0430555555555556 |
| C. | 0.0840277777777778 |
| D. | 0.0430671296296296 |
| Answer» B. 0.0430555555555556 | |
| 5564. |
Which genotype represents a true dihybrid condition [CBSE PMT 1991] |
| A. | Tt Rr |
| B. | tt rr |
| C. | Tt rr |
| D. | Tt RR |
| Answer» B. tt rr | |
| 5565. |
In dihybrid cross, out of 16 plants obtained, the number of genotypes shall be [MP PMT 2001] |
| A. | 4 |
| B. | 9 |
| C. | 16 |
| D. | 12 |
| Answer» C. 16 | |
| 5566. |
Which of the following depicts the Mendel's dihybrid ratio [Bihar MDAT 1992; RPMT 1995; MP PMT 1995, 98; AFMC 2000; BVP 2001] |
| A. | 0.125694444444444 |
| B. | 9 : 3 : 3 : 1 |
| C. | 0.379861111111111 |
| D. | 0.625694444444444 |
| Answer» C. 0.379861111111111 | |
| 5567. |
A dihybrid for qualitative trait is crossed with homozygous recessive individual of its type, the phenotypic ratio is [Orissa JEE 2005] |
| A. | 0.0430671296296296 |
| B. | 0.125694444444444 |
| C. | 1 : 1: 1 : 1 |
| D. | 9 : 3 : 3 : 1 |
| Answer» D. 9 : 3 : 3 : 1 | |
| 5568. |
Which of the following is genotypic ratio of 2 Mendel's monohybrid cross [Bihar MDAT 1991; KCET 1994; EAMCET 1993; MP PMT 1996; MP PMT 2005] |
| A. | 0.04375 |
| B. | 0.125694444444444 |
| C. | 0.0430671296296296 |
| D. | 1 : 1 : 1 : 1 |
| Answer» D. 1 : 1 : 1 : 1 | |
| 5569. |
Which of the statement is correct |
| A. | Each back cross is a test cross |
| B. | Each test cross is a back cross |
| C. | Both tests have the same meaning |
| D. | Reappearence of similar characters in a test cross is called a back cross |
| Answer» C. Both tests have the same meaning | |
| 5570. |
Mendel proposed which of the following term for hereditary units |
| A. | Factor (determiner) |
| B. | Genome |
| C. | Genetic particle |
| D. | None of the above |
| Answer» B. Genome | |
| 5571. |
When a cross is made between offspring and its parents, it is known as [MP PMT 1993] |
| A. | Monohybrid cross |
| B. | Dihybrid cross |
| C. | Back cross |
| D. | Reciprocal cross |
| Answer» D. Reciprocal cross | |
| 5572. |
A 1: 1 phenotypic ratio in a test cross indicates that the |
| A. | Alleles are codominant |
| B. | Dominant phenotype of parent was heterozygous |
| C. | Alleles segregated independently |
| D. | Alleles are dominant |
| Answer» C. Alleles segregated independently | |
| 5573. |
In \[{{F}_{2}}\] generation, a phenotypic ratio of 1:1:1:1 exhibits |
| A. | Back cross |
| B. | Monohybrid test cross |
| C. | Lethality |
| D. | Dihybrid test cross |
| Answer» E. | |
| 5574. |
Cross between F1 plant and recessive female plant is called [CPMT 1995; RPMT 1995] |
| A. | Back cross |
| B. | Test cross |
| C. | Out cross |
| D. | Mutation |
| Answer» C. Out cross | |
| 5575. |
The cross used to ascertain whether the plant is homozygous or heterozygous is [CBSE PMT 1994; CPMT 2001; BHU 1994, 2002] |
| A. | Linkage cross |
| B. | Reciprocal cross |
| C. | Test cross |
| D. | Monohybrid cross |
| Answer» D. Monohybrid cross | |
| 5576. |
Change of male and female parents during crosses is known as |
| A. | Back cross |
| B. | Test cross |
| C. | Reciprocal cross |
| D. | Monohybrid cross |
| Answer» D. Monohybrid cross | |
| 5577. |
Which of the following is heterozygous for two pairs of alleles [AMU 1990] |
| A. | TTRR |
| B. | TrRR |
| C. | ttrr |
| D. | TrtR |
| Answer» E. | |
| 5578. |
How many different kinds of gametes may be produced by an organism with the genotype RrYy [MP PMT 1993] |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» E. | |
| 5579. |
The genotype of an individual is Rr Bb. How many different types of gametes will it produce based on the law of independent assortment |
| A. | 16 |
| B. | 9 |
| C. | 8 |
| D. | 4 |
| Answer» E. | |
| 5580. |
A cross between plants having RRYY and rryy composition will yield plants with [MP PMT 1993; BHU 2003] |
| A. | Round and yellow seeds |
| B. | Round and green seeds |
| C. | Wrinkled and yellow seeds |
| D. | Wrinkled and green seeds |
| Answer» B. Round and green seeds | |
| 5581. |
Mendel's law of heredity can be explained with the help of [CBSE PMT 1999] |
| A. | Mitosis |
| B. | Meiosis |
| C. | Both mitosis and meiosis |
| D. | None of the above |
| Answer» C. Both mitosis and meiosis | |
| 5582. |
Mendel's principle of segregation was based on the separation of alleles in the garden pea during [MP PMT 1993] |
| A. | Pollination |
| B. | Embryonic development |
| C. | Seed formation |
| D. | Gamete formation |
| Answer» E. | |
| 5583. |
When heterozygous tall plants are self-pollinated than tall and dwarf plants are obtained, this is explain to [RPMT 1999] |
| A. | Law of purity of gamete |
| B. | Segregation of law |
| C. | Division in spores |
| D. | Independent assortment |
| Answer» C. Division in spores | |
| 5584. |
The first law of Mendel [CPMT 2003] |
| A. | Law of inheritance |
| B. | Law of variation |
| C. | Law of independent assortment |
| D. | Law of segregation |
| Answer» E. | |
| 5585. |
Mendel formulated some laws which are known as [AMU 1990] |
| A. | Laws of germplasm |
| B. | Laws of origin of species |
| C. | Laws of recapitulation |
| D. | Laws of inheritance |
| Answer» E. | |
| 5586. |
Mendel enunciated [MP PMT 1995, 98] |
| A. | Two principles of inheritance |
| B. | Three principles of inheritance |
| C. | Four principles of inheritance |
| D. | Five principles of inheritance |
| Answer» C. Four principles of inheritance | |
| 5587. |
Mendel was the native of [CPMT 1993] |
| A. | France |
| B. | Sweden |
| C. | India |
| D. | Austria |
| Answer» E. | |
| 5588. |
Mendel chose the pea plant to study genetics because of many qualities. One of them which he did not consider was [DPMT 1992] |
| A. | Plant height |
| B. | Plant colour |
| C. | Pod shape |
| D. | Pod colour |
| Answer» C. Pod shape | |
| 5589. |
Which of the following pea plants will be always white flowered |
| A. | In which stem is elongated |
| B. | In which stem is short |
| C. | In which seed coat is white |
| D. | In which pod is constricted |
| Answer» D. In which pod is constricted | |
| 5590. |
Pod character i.e. green colour in pea is |
| A. | Dominant |
| B. | Incompletely dominant |
| C. | Recessive character |
| D. | Abnormal character |
| Answer» B. Incompletely dominant | |
| 5591. |
Which is a dominant character of a pod of pea |
| A. | Constricted shape |
| B. | Inflated shape |
| C. | Conical shape |
| D. | Fusiform shape |
| Answer» C. Conical shape | |
| 5592. |
If two opposite alleles come together, one finding morphological expression masking the other, the fact is described as law of [CPMT 1973, 75] |
| A. | Inheritance |
| B. | Dominance |
| C. | Limiting factor |
| D. | Segregation |
| Answer» C. Limiting factor | |
| 5593. |
In one cross between red flower and white flower the offsprings have red flower in majority and white flowers are much less. In this cross red colour character is [CPMT 1992] |
| A. | Dominant |
| B. | Assorted |
| C. | Recessive |
| D. | Hybrid |
| Answer» B. Assorted | |
| 5594. |
For understanding the genotype of an offspring which cross should be performed |
| A. | With the parent having dominant characters |
| B. | With the parent having recessive characters |
| C. | With any of the plant |
| D. | With plant showing incomplete dominance |
| Answer» C. With any of the plant | |
| 5595. |
The dwarfness in plants of \[{{F}_{2}}\] generation is [DPMT 1992] |
| A. | Recessive |
| B. | Dominant |
| C. | Both the above |
| D. | None of the above |
| Answer» B. Dominant | |
| 5596. |
Mendel was born in [MP PMT 1999] |
| A. | 17th century |
| B. | 18th century |
| C. | 19th century |
| D. | 8th century |
| Answer» D. 8th century | |
| 5597. |
Which genotype characterises an organism that is heterozygous for two genes [MP PMT 1993] |
| A. | RRYy |
| B. | RrYY |
| C. | RRYY |
| D. | RrYy |
| Answer» E. | |
| 5598. |
The hybrids are generally found to be superior to their parents, it is because of |
| A. | Homozygosity |
| B. | Hybrid vigour |
| C. | Parents are generally weak |
| D. | None of these |
| Answer» C. Parents are generally weak | |
| 5599. |
An organism with two identical alleles for a given trait is [MP PMT 1993; CPMT 1994] |
| A. | Homozygous |
| B. | Segregating |
| C. | Dominant |
| D. | A hermaphrodite |
| Answer» B. Segregating | |
| 5600. |
Organisms phenotypically similar but genotypically different are said to be [KCET 1994] |
| A. | Heterozygous |
| B. | Monozygous |
| C. | Multizygous |
| D. | Homozygous |
| Answer» B. Monozygous | |