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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 4151. |
SA - Node is located at |
| A. | Left upper corner of the left atrium |
| B. | Left lower corner of the left atrium |
| C. | Right upper corner of the right atrium |
| D. | Righr lower corner of the right atrium |
| Answer» D. Righr lower corner of the right atrium | |
| 4152. |
Which test is carried out if disease is occured by salmonella typhi ? |
| A. | Widal test |
| B. | Lisman test |
| C. | Blood test |
| D. | Barium test |
| Answer» B. Lisman test | |
| 4153. |
In bacteria, genes for antibiotic resistance are usually located in |
| A. | Plasmids |
| B. | Cytoplasm |
| C. | Mitochondria |
| D. | Nucleus |
| Answer» C. Mitochondria | |
| 4154. |
Which is not applicable institute conservation ? (KCET – 2007) |
| A. | National Park |
| B. | Sanctuary |
| C. | Botanical Garden |
| D. | Biosphere reserve |
| Answer» D. Biosphere reserve | |
| 4155. |
Which tissue is located in uterine tube and proximal tube of kidneys respectively :- |
| A. | Columnar epithelium, Cuboidal epithelium |
| B. | Ciliated epithelium, columnar epithelium |
| C. | Ciliated epithelium, Cuboidal epithelium |
| D. | Cuboidal epithelium, ciliated epithelium |
| Answer» D. Cuboidal epithelium, ciliated epithelium | |
| 4156. |
Out of the following , Find out the reason for occurrence of free martin in cattles ? |
| A. | Both the twins are connected by a common umbilical cord |
| B. | Gonad of the male develop earlier then those of the female |
| C. | Male hormones reach the female embryo and influence the development of male sex in the female embryo |
| D. | All of the above |
| E. | cessive |
| Answer» E. cessive | |
| 4157. |
Which statement is true for the researches carried out at the IVRI. |
| A. | In india little attendance has been paid for developing poultry industry in comparision to other countries. |
| B. | High biological value of eggs is recommended the consumption of eggs. |
| C. | Poultry keeping has become small scale industry for palatable and nutritive food which it provides in the form of eggs as well as adult animals. |
| D. | In India poutry farms development is necessary. |
| Answer» C. Poultry keeping has become small scale industry for palatable and nutritive food which it provides in the form of eggs as well as adult animals. | |
| 4158. |
Genetic information is carried by the long chain molecules which are made up of |
| A. | Amino acids |
| B. | Nucleotides |
| C. | Chromosomes |
| D. | Enzymes |
| Answer» C. Chromosomes | |
| 4159. |
85-90% (9/10) of all photosynthesis in the world is carried out by |
| A. | Shrub |
| B. | Algae of the oceans |
| C. | Herbs |
| D. | Scientists in the laboratory |
| Answer» C. Herbs | |
| 4160. |
A test cross is carried out to AIPMT - 2012 |
| A. | determine the genotype of a plant at F1 |
| B. | Predict whether two traits are linked |
| C. | assess the number of alleles of a gene |
| D. | determine whether two species or varieties will breed successfully. |
| E. | cessive |
| Answer» B. Predict whether two traits are linked | |
| 4161. |
It is estimated that about 85% of the earth’s photosynthetic activity is carried out by |
| A. | tree |
| B. | savannas |
| C. | phytoplanktons |
| D. | herbaceous plants |
| Answer» D. herbaceous plants | |
| 4162. |
Cross XXYy xxYy yields Xx YY:XxYy :Xxyy:xxyy offspring in the ratio of |
| A. | 0 : 3 : 1 : 1 |
| B. | 1 : 2 : 1 : 0 |
| C. | 1 : 1 : 1 : 1 |
| D. | 1 : 2 : 1 : 1 |
| E. | cessive |
| Answer» D. 1 : 2 : 1 : 1 | |
| 4163. |
Which of the following conditions represent a case of co- dominant genes ? |
| A. | A gene expresses itself , suppressing the phenotypic effect of its alleles. |
| B. | enes that are similar in phenotypic effect when present separately, but when together interact to produce a different trait. |
| C. | Alleles, both of which interact to produce effect in homozygous condition |
| D. | Alleles, both of which interact to produce an independent effect in heterozygous condition. |
| E. | cessive |
| Answer» E. cessive | |
| 4164. |
Test cross is |
| A. | Tt Tt |
| B. | Tt TT |
| C. | TT TT |
| D. | Tt tt |
| E. | cessive |
| Answer» E. cessive | |
| 4165. |
If distance between gene on chromosome in more , then gene shows :- |
| A. | Less Linkag |
| B. | strong linkage |
| C. | weak linkage |
| D. | incomplete linkage |
| E. | cessive |
| Answer» C. weak linkage | |
| 4166. |
If there were only parental combinations in F2 of a dihybrid cross then Mendel might have discovered ? |
| A. | Independent assortment |
| B. | Atavism |
| C. | Linkage |
| D. | Repulsion |
| E. | cessive |
| Answer» B. Atavism | |
| 4167. |
Which of the following is significance of dominance ? |
| A. | Organisms with dominant genes are more vital |
| B. | Harmful mutations are not expressed due to dominant gene |
| C. | Heterosis is due to dominant gene |
| D. | All the above |
| E. | cessive |
| Answer» C. Heterosis is due to dominant gene | |
| 4168. |
Genes do not occur in pairs in |
| A. | Zygote |
| B. | Somatic cell |
| C. | Endosperm cell |
| D. | Gametes |
| E. | cessive |
| Answer» E. cessive | |
| 4169. |
Allele is the |
| A. | Alternate trait of gene pair |
| B. | Total number of genes for a trait |
| C. | Total number of chromosomes |
| D. | Total number of chromosomes of a haploid set. |
| E. | cessive |
| Answer» B. Total number of genes for a trait | |
| 4170. |
1: 1: 1: 1 ratio shows |
| A. | Monohybrid cross |
| B. | Dihybrid cross |
| C. | Back cross |
| D. | Dihybrid test cross |
| E. | cessive |
| Answer» E. cessive | |
| 4171. |
Heterozygous tall plants were crossed with dwarf plants what will be the ratio of dwarf plants in the following progency ? |
| A. | 50% |
| B. | 25 % |
| C. | 75% |
| D. | 100% |
| E. | cessive |
| Answer» B. 25 % | |
| 4172. |
Phenotypic ratio 3:1 proves |
| A. | Dominance |
| B. | Segregation |
| C. | Crossing over |
| D. | Independent Assortment |
| E. | cessive |
| Answer» C. Crossing over | |
| 4173. |
In a plant, gene "T" is responsible for tallness and its recessive allele "t" for dwarfness and "R" is reponsible for red colour flower and its recessive allele "r" of white flower colour. A tall and red flowered plant with genotype TtRr crossed with dwarf and red flowered ttRr. What is the percentage of dwarf - white flowered offspring of above cross ? |
| A. | 50% |
| B. | 6.25% |
| C. | 12.5 % |
| D. | 50 % |
| E. | cessive |
| Answer» D. 50 % | |
| 4174. |
In Mirabilis plant the appearance of the pink hybrid (Rr) between cross of a red (RR) and white (rr) flower parent indicates |
| A. | Segregation |
| B. | Dominance |
| C. | Incomplete dominance |
| D. | Heterosis |
| E. | cessive |
| Answer» D. Heterosis | |
| 4175. |
Types of phenotypes of F2 generation of dihybrid cross ? |
| A. | 4 |
| B. | 16 |
| C. | 8 |
| D. | 9 |
| E. | cessive |
| Answer» B. 16 | |
| 4176. |
Which of the following is the unit of inheritance ? |
| A. | Phenotype |
| B. | Genotype |
| C. | Gene |
| D. | Genome |
| E. | cessive |
| Answer» D. Genome | |
| 4177. |
What is the ratio of homozygous plants for both dominant characters in F2 of a Dilybrid cross ? |
| A. | 1/16 |
| B. | 3/16 |
| C. | 4/16 |
| D. | 9/16 |
| E. | cessive |
| Answer» E. cessive | |
| 4178. |
A gene located an y - chromosome and therefore, transmitted from father to son is known as |
| A. | Supplementary gene |
| B. | Complementary gene |
| C. | Duplicate gene |
| D. | Holandric gene |
| E. | cessive |
| Answer» B. Complementary gene | |
| 4179. |
Genotype - Phenotype concept was first produced by |
| A. | Bateson |
| B. | Johannsen |
| C. | Sutton&Boveri |
| D. | Punnet |
| E. | cessive |
| Answer» B. Johannsen | |
| 4180. |
Mendelism is genetics of |
| A. | Haploids |
| B. | Diploids |
| C. | Prokaryotes |
| D. | All the above |
| E. | cessive |
| Answer» E. cessive | |
| 4181. |
From a single ear of corn, a farmer planted 200 kernels which produced 140 tall & 40 short plants. The genotypes of these off springs are most likely. |
| A. | TT ,tt |
| B. | TT , Tt , tt |
| C. | TT ,Tt |
| D. | Tt ,tt |
| E. | cessive |
| Answer» B. TT , Tt , tt | |
| 4182. |
The organizations whose genetic material has been altered using genetic engineering is called as - |
| A. | Genetically mutant organism |
| B. | Genetically modern organism |
| C. | Genetically modified organism |
| D. | Genetically transferred organism. |
| Answer» D. Genetically transferred organism. | |
| 4183. |
Genetic recombinations occur through |
| A. | Mitosis & fertilization |
| B. | Mitosis & Meiosis |
| C. | Meiosis & fertilization |
| D. | None |
| E. | cessive |
| Answer» D. None | |
| 4184. |
Medelian dihybrid and dihybrid with linkage are respectively related with how many chromosomes? |
| A. | 1 pair & 2 pair |
| B. | 2 pair & 1 pair |
| C. | 2 pair & 2 pair |
| D. | 1 pair & 1 pair In dihybrid with linkage , 2 pairs of genes located in similar homobgous chromosomes |
| E. | cessive |
| Answer» C. 2 pair & 2 pair | |
| 4185. |
The right granted by government to prevent others from the commercial use of resources inventionis - |
| A. | Government grant |
| B. | Patent |
| C. | official document |
| D. | Biopatent |
| Answer» E. | |
| 4186. |
A useful process for determining whether an individual is homozygous or heterozygous is |
| A. | cross - breeding |
| B. | self fertilization |
| C. | Back - crossing |
| D. | Test cross |
| E. | cessive |
| Answer» C. Back - crossing | |
| 4187. |
Which of the following is responsible for causing disease in plants? |
| A. | viru |
| B. | pesticide |
| C. | Herbicide |
| D. | all the above |
| Answer» B. pesticide | |
| 4188. |
In which of the following industrial areas biotechnology is applicable? |
| A. | Health care |
| B. | Environment |
| C. | Agriculture |
| D. | all of the above |
| Answer» E. | |
| 4189. |
The toxin produced by the Bt is coded by a gene named as - |
| A. | Cry |
| B. | Cry Protein |
| C. | Cyr |
| D. | Cyr Protein |
| Answer» C. Cyr | |
| 4190. |
Organisms which can be used to gain commercial benefits are called - |
| A. | Beneficial resource |
| B. | Bioresources |
| C. | Financial resources |
| D. | Biological resources |
| Answer» C. Financial resources | |
| 4191. |
Which of the following techniques use genes and DNA molecules for diagnoses of diseases? |
| A. | Gene therapy |
| B. | Recombinant gene technology |
| C. | Polymerase chain reaction |
| D. | All the above |
| Answer» E. | |
| 4192. |
The method during which genetic characteristics of animals are improved by mating of selectedbreeds is known as - |
| A. | Improved breeding |
| B. | selective breeding |
| C. | mating |
| D. | Breeding |
| Answer» C. mating | |
| 4193. |
Toxin proteins produced by the bacterial gene destroys - |
| A. | Aphid |
| B. | grass hoppers |
| C. | Boll worms |
| D. | Beetles |
| Answer» B. grass hoppers | |
| 4194. |
Exploitation of Patent of biological resources of other nations is called as - |
| A. | Biosafety |
| B. | Biopiracy |
| C. | Biowar |
| D. | Bioabuse |
| Answer» C. Biowar | |
| 4195. |
Due to what food supply has increased during green revolution? |
| A. | use of chemical |
| B. | use of biochemicals |
| C. | use of photochemicals |
| D. | use of agrochemicals |
| Answer» E. | |
| 4196. |
Transgene introduced in the first transgenic cow was responsible for the production of |
| A. | Albumin enriched milk |
| B. | Protein enriched milk |
| C. | Human protein enriched milk |
| D. | Vitamins enriched milk |
| Answer» D. Vitamins enriched milk | |
| 4197. |
What was the amount of Alpha-lactalbumin in the milk of transgenic cow ? |
| A. | 4.2 grams per litre |
| B. | 2.4 grams per litre |
| C. | 3.4 grams per litre |
| D. | 4.2 grams per litre |
| Answer» C. 3.4 grams per litre | |
| 4198. |
What were the earlier sources of Insulin? |
| A. | cattle and pig |
| B. | camel and pig |
| C. | cattle and dog |
| D. | goat and pig |
| Answer» B. camel and pig | |
| 4199. |
Modifications by germ line gene therapy are heritable as - |
| A. | The Functional gene is incorporated into to their genome. |
| B. | The Functional gene is incorporated into one of the gene. |
| C. | The Functional gene is incorporated into somatic cells. |
| D. | All the above |
| Answer» B. The Functional gene is incorporated into one of the gene. | |
| 4200. |
The Phenomenon of introduction of exogenous DNA into the genome of animals is - |
| A. | In vivo, gene therapy |
| B. | Foreign gene therapy |
| C. | Ex vivo gene therapy |
| D. | Transgenesis |
| Answer» E. | |