MCQOPTIONS
Saved Bookmarks
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.
| 151. |
The corner of the cells of collenchyma tissue in plant are thickened due to deposition of _____ |
| A. | Lignin and suberin |
| B. | Suberin and cutin |
| C. | Cellulose and pectin |
| D. | Chitin and lignin |
| Answer» D. Chitin and lignin | |
| 152. |
13 - Chambered heart occurs in |
| A. | Leech |
| B. | Earthworm |
| C. | Snail |
| D. | Cockroach |
| Answer» E. | |
| 153. |
When during the Cell Cycle are Chromosomes visible? |
| A. | Only during interphase |
| B. | Only during cell division |
| C. | Only during g1 phase |
| D. | Only during they are replicated |
| Answer» C. Only during g1 phase | |
| 154. |
Bone deformities occur due to the excess intake of |
| A. | Phosphorus |
| B. | Potassium |
| C. | Fatty acid |
| D. | Fluorine |
| Answer» E. | |
| 155. |
The rate of heartbeat is accelerated by the hormone |
| A. | Adrenaline |
| B. | Acetylcholine |
| C. | Thyroxine |
| D. | Pituitrin |
| Answer» B. Acetylcholine | |
| 156. |
Only male frog produce croacking sound because ____ |
| A. | Female frog have no larynx |
| B. | Female frog have larynx but no vocal cord |
| C. | Male frog have three pair of vocal cord |
| D. | Male frog can magnify their voice with the help of sound box |
| Answer» B. Female frog have larynx but no vocal cord | |
| 157. |
Number of eyes found in Earthworm.......... |
| A. | One |
| B. | Many |
| C. | No eye |
| D. | Two |
| Answer» D. Two | |
| 158. |
The enzyme that is necessary to bring about clotting of blood is |
| A. | Peptidase |
| B. | Amylase |
| C. | Lipase |
| D. | Thrombokinase |
| Answer» E. | |
| 159. |
Vivipary is defined as germination |
| A. | During storage |
| B. | Within the fruit |
| C. | With cotyledons coming out of soil |
| D. | With cotyledons remaining inside the soil |
| Answer» C. With cotyledons coming out of soil | |
| 160. |
Which of the following is an Autoimmune disease? |
| A. | Systematic lupus erythematosus |
| B. | Acute anaphylaxis |
| C. | Farmer's lung |
| D. | A heart attack |
| Answer» B. Acute anaphylaxis | |
| 161. |
Who is known as father of Zoology |
| A. | Darwin |
| B. | Aristotle |
| C. | Lamark |
| D. | Theophrastus |
| Answer» C. Lamark | |
| 162. |
The human heart is |
| A. | Neurogenic heart |
| B. | Myogenic heart |
| C. | Pulsating heart |
| D. | Ampullary heart |
| Answer» C. Pulsating heart | |
| 163. |
During rainy season wooden doors are difficult to open or closure because of ? |
| A. | Imbibition |
| B. | Plasmolysis |
| C. | Diffusion |
| D. | Osmosis |
| Answer» B. Plasmolysis | |
| 164. |
The seeds of flowering plants are made up of- |
| A. | Ovary and ovary wall |
| B. | Embryo, food reserves and coat |
| C. | Cotyledons |
| D. | Zygotes |
| Answer» C. Cotyledons | |
| 165. |
A dried flower bud which is used as spice is obtained from- |
| A. | Cinnamon |
| B. | Caradamon |
| C. | Clove |
| D. | Coriander |
| Answer» D. Coriander | |
| 166. |
Which one of the following viruses contains both DNA and RNA? |
| A. | Polio virus |
| B. | Leuko virus |
| C. | Cyanophage |
| D. | Herpes virus |
| Answer» C. Cyanophage | |
| 167. |
A tumor enclosed within a capsule is termed |
| A. | Metastasis |
| B. | Basophils |
| C. | Benign |
| D. | Malignant |
| Answer» D. Malignant | |
| 168. |
Which of the following is a pair of viral diseases? |
| A. | Ringworm, aids |
| B. | Typhoid, tuberculosis |
| C. | Dysentery, common cold |
| D. | Common cold, aids |
| Answer» E. | |
| 169. |
Fruit of which of the following plant is found underground soil- |
| A. | Potato |
| B. | Carrot |
| C. | Pea-nut |
| D. | Onion |
| Answer» D. Onion | |
| 170. |
Seed developed from- |
| A. | Gynecium |
| B. | Ovule |
| C. | Ovary |
| D. | Pollen grain |
| Answer» C. Ovary | |
| 171. |
In an area where DDT had been used extensively, the population of birds declined significantly because |
| A. | Many of the birds eggs laid, did not hatch |
| B. | Earthworms in the area got eradicated |
| C. | Cobras were feeding exclusively on birds |
| D. | Birds stopped laying eggs |
| Answer» B. Earthworms in the area got eradicated | |
| 172. |
What is the correct order for Respiration? |
| A. | Election transport chain ? krebs? cycle ? glycolysis |
| B. | Glycolysis ? krebs? cycle ? electron transport chain |
| C. | Glycolysis ? electron transport chain ? krebs? cycle |
| D. | The krebs? cycle - electron transport chain - glycolysis |
| Answer» C. Glycolysis ? electron transport chain ? krebs? cycle | |
| 173. |
The fleshy thalamus is edible in- |
| A. | Mango |
| B. | Orange |
| C. | Tomato |
| D. | Apple |
| Answer» E. | |
| 174. |
Phycology is the branch of botany in which we study about |
| A. | Algae |
| B. | Fungi |
| C. | Ecology |
| D. | Virus |
| Answer» B. Fungi | |
| 175. |
Which statement best describes Arteries? |
| A. | They have thin walls and transport blood away from the heart |
| B. | They have thick walls and transport blood toward the heart |
| C. | They have thin walls and transport blood toward the heart |
| D. | They have thick walls and transport blood away from the heart |
| Answer» E. | |
| 176. |
Nitrogen fixing bacteria is useful in growing which crop ________ |
| A. | Wheat |
| B. | Paddy |
| C. | Legume |
| D. | Maiz |
| Answer» D. Maiz | |
| 177. |
Age of fossils in the past was generally determined by radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led t |
| A. | Electron spin resonance (esr) and fossil dna |
| B. | Study of carbohydrates/proteins in fossils |
| C. | Study of carbohydrates/proteins in rocks |
| D. | Study of the conditions of fossilization |
| Answer» B. Study of carbohydrates/proteins in fossils | |
| 178. |
Bark of which tree is used as a concliment- |
| A. | Cinnamon |
| B. | Clove |
| C. | Neem |
| D. | Palm |
| Answer» B. Clove | |
| 179. |
At which stage of HIV infection does one usually show symptoms of AIDS? |
| A. | When the infecting retrovirus enters host cells |
| B. | When hiv replicates rapidly in helper t-lymphocytes and damages large number of these |
| C. | Within 15 days of sexual contact with an infected person |
| D. | When viral dna is produced by reverse transcriptase |
| Answer» C. Within 15 days of sexual contact with an infected person | |
| 180. |
When the bark of a tree is removed in a circular fashion all around near its base it gradually dries up and dies because- |
| A. | Water from soil cannot rise to aerial parts. |
| B. | Roots are staryed of energy. |
| C. | Tree is infected by soil microbes. |
| D. | Root do not receive oxygen for respiration. |
| Answer» D. Root do not receive oxygen for respiration. | |
| 181. |
Which one of the following pair is not correctly matched- |
| A. | Funaria - bryophyte |
| B. | Chlorella - pteridophte |
| C. | Spyrogyra - algae |
| D. | Cycas - gymnosperm |
| Answer» C. Spyrogyra - algae | |
| 182. |
Which one of the following plant is preferred for mixed cropping in order to enhance the bioavailability of nitrogen? |
| A. | Wheat |
| B. | Gram |
| C. | Maize |
| D. | Barley |
| Answer» C. Maize | |
| 183. |
The plant dye Henna imparts orangered colour to skin and hairs due to its reaction with which of the following? |
| A. | Protein and amino acid |
| B. | Lipids |
| C. | Carbohydrates |
| D. | Amino acids |
| Answer» B. Lipids | |
| 184. |
The genetic material in virus is |
| A. | Dna or rna |
| B. | Rna only |
| C. | Dna only |
| D. | None of these |
| Answer» B. Rna only | |
| 185. |
Why do you feel cool under a tree but not so under a tin shed on a sunny day? |
| A. | The greenness of the tree gives the coal feeling |
| B. | Photosynthesis absorbs heat |
| C. | The leaves convert water vapour into water which is a heat absorbing process |
| D. | The leaves gives out water which vaporises absorbing some heat as latent heat |
| Answer» E. | |
| 186. |
Cancer cells are damaged by radiations while others are not because cancer cells are |
| A. | Starved |
| B. | Different in nature |
| C. | Undergoing rapid divisions |
| D. | None of these |
| Answer» D. None of these | |
| 187. |
Gametophytes of sexually reproducing flowering plants are- |
| A. | Haploid |
| B. | Diploid |
| C. | Tetraploid |
| D. | Polyploid |
| Answer» B. Diploid | |
| 188. |
In plant which one of the following tissues is dead? |
| A. | Parenchyma |
| B. | Collenchyma |
| C. | Sclerenchyma |
| D. | Phloem |
| Answer» D. Phloem | |
| 189. |
The major of the following principles does a rocket work? |
| A. | Mango |
| B. | Drumstick |
| C. | Neem |
| D. | Lotus |
| Answer» C. Neem | |
| 190. |
Vegetative propagation by stem cutting is generally foundation- |
| A. | Banana |
| B. | Sugarcane |
| C. | Mango |
| D. | Cotton |
| Answer» C. Mango | |
| 191. |
The tobacco mosaic virus (TMV) is approximately ___ in size. |
| A. | 700 ? 30 nm |
| B. | 300 ? 18 nm |
| C. | 3000 ? 5 nm |
| D. | 800 ? 10 nm |
| Answer» C. 3000 ? 5 nm | |
| 192. |
Which one of the following is a protein fiber? |
| A. | Nylon |
| B. | Polyester |
| C. | Silk |
| D. | Cotton |
| Answer» D. Cotton | |
| 193. |
Which of the following plant only produce seed but not fruit? |
| A. | Sugarcane |
| B. | Pea-nut |
| C. | Cycus |
| D. | Almond |
| Answer» D. Almond | |
| 194. |
Which one of the following is a insectivorous plant- |
| A. | Fashion flower plant |
| B. | Pitcher plant |
| C. | Night queen |
| D. | Flame of the forest |
| Answer» C. Night queen | |
| 195. |
Virus multiplies in |
| A. | Living tissue |
| B. | Dead tissue |
| C. | Culture medium |
| D. | Soil |
| Answer» B. Dead tissue | |
| 196. |
Starch is an example of- |
| A. | Polysaccharide |
| B. | Oligosaccharide |
| C. | Monosaccharide |
| D. | Disaccharide |
| Answer» B. Oligosaccharide | |
| 197. |
Carcinoma refers to |
| A. | Malignant tumours of the skin or mucous membrane |
| B. | Malignant tumours of the colon |
| C. | Malignant tumours of the connective tissue |
| D. | Benign tumours of the connective tissue |
| Answer» B. Malignant tumours of the colon | |
| 198. |
A fertilized egg is known as- |
| A. | Oospore |
| B. | Connidiospore |
| C. | Zoospore |
| D. | Zygote |
| Answer» E. | |
| 199. |
A baby has been born with a small tail. It is the case exhibiting |
| A. | Atavism |
| B. | Retrogressive evolution |
| C. | Metamorphosis |
| D. | Mutation |
| Answer» B. Retrogressive evolution | |
| 200. |
The incubation period of Hepatitis 'B' virus is: |
| A. | 30-180 days |
| B. | One week |
| C. | 42-56 days |
| D. | 15-20 days |
| Answer» B. One week | |