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MCQOPTIONS
This section includes 1528 Mcqs, each offering curated multiple-choice questions to sharpen your Grade9 knowledge and support exam preparation. Choose a topic below to get started.
| 1151. |
Considering all the veins of the human body, the veins that carry deoxygenated blood are |
| A. | pulmonary veins |
| B. | connective veins |
| C. | endothelial veins |
| D. | exothelial veins |
| Answer» B. connective veins | |
| 1152. |
The capillaries are considered as the smallest blood vessels present in |
| A. | pulmonary vessels |
| B. | tissues |
| C. | pulmonary arteries |
| D. | pulmonary valves |
| Answer» C. pulmonary arteries | |
| 1153. |
The small openings present in stems of plants are classified as |
| A. | plasmodesmata |
| B. | lenticels |
| C. | guard cells |
| D. | stomatas |
| Answer» C. guard cells | |
| 1154. |
The period in the cardiac cycle during which blood is filled into atria and ventricles and atria relaxes is called |
| A. | atrial diastole |
| B. | cardiac systole |
| C. | atrial systole |
| D. | cardiac diastole |
| Answer» E. | |
| 1155. |
The dengue fever leads to the decrease in |
| A. | sucrose |
| B. | white blood cells |
| C. | platelets |
| D. | red blood cells |
| Answer» D. red blood cells | |
| 1156. |
The muscular organ which is responsible to pump blood through the blood vessels is known as |
| A. | lungs |
| B. | liver |
| C. | heart |
| D. | none of above |
| Answer» D. none of above | |
| 1157. |
The difference between different blood groups is based on specific |
| A. | platelets |
| B. | basophils |
| C. | antigens |
| D. | neutrophils |
| Answer» D. neutrophils | |
| 1158. |
The muscles that are composed of striated cells and perform involuntary actions are |
| A. | pelvic muscles |
| B. | abdominal muscles |
| C. | sphincter muscles |
| D. | cardiac muscles |
| Answer» E. | |
| 1159. |
The function of pericardial fluid is to |
| A. | reduce friction |
| B. | increase friction |
| C. | increase supply of oxygen |
| D. | increase supply of water |
| Answer» B. increase friction | |
| 1160. |
The substances that act as biocatalysts are considered as |
| A. | reactants |
| B. | products |
| C. | enzymes |
| D. | catalysts |
| Answer» C. enzymes | |
| 1161. |
The enzymes involved in metabolic pathways take the product as a |
| A. | solutes |
| B. | concentrates |
| C. | nitrates |
| D. | substrates |
| Answer» E. | |
| 1162. |
The physiologist who used the term 'enzyme' for the first time is |
| A. | John Oscar |
| B. | Oscar Hertwig |
| C. | Winhelm Kuhne |
| D. | Ernst John |
| Answer» D. Ernst John | |
| 1163. |
The example of organic cofactors is |
| A. | flavin and potassium |
| B. | nitro Flavin |
| C. | heme and flavin |
| D. | riboflavin |
| Answer» D. riboflavin | |
| 1164. |
The particular order in which several enzymes works together is classified as |
| A. | inactive pathways |
| B. | active pathways |
| C. | synthetic pathways |
| D. | metabolic pathways |
| Answer» E. | |
| 1165. |
The covalent bonds that connect two phosphates are indicated by |
| A. | inverted commas |
| B. | colon |
| C. | tilde |
| D. | semicolon |
| Answer» D. semicolon | |
| 1166. |
The energy received from sunlight is absorbed by |
| A. | chromatin |
| B. | chromatids |
| C. | chlorophyll |
| D. | chloroplasts |
| Answer» D. chloroplasts | |
| 1167. |
While burning a fuel, the substance which is consumed is |
| A. | NO2 |
| B. | HCl2 |
| C. | O2 |
| D. | MNO4 |
| Answer» D. MNO4 | |
| 1168. |
If the right hand side of general equation for the process of photosynthesis is 6CO2 + 12H2O + light energy then left hand side of photosynthesis is |
| A. | C6H12O6 + 6O2 + 6H2O |
| B. | C10H9O5 + 6O2 + 6H2O |
| C. | C12H12O6 + 6O4 + 6H4O |
| D. | C8H10O8 + 6O2 + 6H2O |
| Answer» C. C12H12O6 + 6O4 + 6H4O | |
| 1169. |
In the process of glycolysis, the NADH generates |
| A. | 2 Flavin Adenine Dinucleotide (FAD) |
| B. | 2 Adenosine Diphosphate (ADP) |
| C. | 2 Adenosine Triphosphate (ATP) |
| D. | 2 Adenosine monophosphate (AMP) |
| Answer» D. 2 Adenosine monophosphate (AMP) | |
| 1170. |
The biologist who suggested the modification in lock and key model proposed by Emil Fischer is |
| A. | Jane Olive |
| B. | Emil August |
| C. | Daniel Olive |
| D. | Daniel Koshland |
| Answer» E. | |
| 1171. |
The enzymes that are used to remove resistant starch residues are called |
| A. | nucleated enzymes |
| B. | synthetic enzymes |
| C. | protease enzymes |
| D. | amylase enzymes |
| Answer» E. | |
| 1172. |
The proteins are made up of |
| A. | amino acids |
| B. | riboflavin acids |
| C. | omega 3 acids |
| D. | zinc based acids |
| Answer» B. riboflavin acids | |
| 1173. |
The biochemical reaction in which large molecules are synthesized is classified as |
| A. | empiricism |
| B. | anabolism |
| C. | tropism |
| D. | metabolism |
| Answer» C. tropism | |
| 1174. |
The pepsin enzymes that work in the stomach cavity are classified as |
| A. | diploid enzymes |
| B. | haploid enzymes |
| C. | non-transferable enzymes |
| D. | extracellular enzymes |
| Answer» E. | |
| 1175. |
The centrioles are duplicated during |
| A. | interphase |
| B. | anaphase |
| C. | telophase |
| D. | metaphase |
| Answer» B. anaphase | |
| 1176. |
The spindle fibers are formed on the surface of |
| A. | nuclear envelope |
| B. | chromatin envelope |
| C. | cristae envelope |
| D. | mitotic envelope |
| Answer» B. chromatin envelope | |
| 1177. |
The phase of meiosis I which consists of metaphase I, prophase I, telophase I and anaphase I is |
| A. | synopsis |
| B. | cytokinesis |
| C. | karyokinesis |
| D. | micro dialysis |
| Answer» D. micro dialysis | |
| 1178. |
The chromosomes are divided in anaphase to form |
| A. | daughter chromosomes |
| B. | sister chromosomes |
| C. | daughter chromatids |
| D. | sister chromatids |
| Answer» E. | |
| 1179. |
The biologist who described the significance of meiosis for the inheritance and reproduction is |
| A. | August Weismann |
| B. | Jane Austen |
| C. | Ernst James |
| D. | Arthur Austen |
| Answer» B. Jane Austen | |
| 1180. |
The top of the trachea is known as |
| A. | esophagus |
| B. | epiglottis |
| C. | pharynx |
| D. | larynx |
| Answer» E. | |
| 1181. |
The classification of fertilizers includes |
| A. | organic fertilizers only |
| B. | inorganic fertilizers only |
| C. | amino acids |
| D. | organic and inorganic fertilizers |
| Answer» E. | |
| 1182. |
The fiber which passes through the alimentary canal as it is broke down is |
| A. | unsaturated dietary fiber |
| B. | soluble dietary fiber |
| C. | insoluble dietary fiber |
| D. | saturated dietary fiber |
| Answer» C. insoluble dietary fiber | |
| 1183. |
The situation in which there is no enough food in an area to feed people is called |
| A. | famine |
| B. | drought |
| C. | monsoon |
| D. | thunderstorms |
| Answer» B. drought | |
| 1184. |
The process in which food is prepared and converted into the substances needed for energy and growth is classified as |
| A. | nutrition |
| B. | respiration |
| C. | electrolysis |
| D. | metabolism |
| Answer» B. respiration | |
| 1185. |
When two species are interdependent they form a |
| A. | domino effect |
| B. | pollution |
| C. | parasitic relation |
| D. | deforestation |
| Answer» B. pollution | |
| 1186. |
Eukaryotic and simple multicellular organisms are included in the kingdom |
| A. | Monera |
| B. | Protista |
| C. | Fungi |
| D. | Plantae |
| Answer» C. Fungi | |
| 1187. |
Considering the biodiversity, the plants can be classified as |
| A. | sativum |
| B. | pisum |
| C. | fauna |
| D. | flora |
| Answer» E. | |
| 1188. |
The name of the order to which humans belongs is |
| A. | primates |
| B. | odonatan |
| C. | acarina |
| D. | protura |
| Answer» B. odonatan | |
| 1189. |
The wood which is used to make houses is taken from |
| A. | timber |
| B. | pulp |
| C. | pine |
| D. | bark |
| Answer» B. pulp | |
| 1190. |
When thrombus becomes free-floating and dislodges then the thrombus becomes |
| A. | embolus |
| B. | bolus |
| C. | acidosis |
| D. | hypnosis |
| Answer» E. | |
| 1191. |
The individuals having blood group AB are considered as |
| A. | universal donors |
| B. | universal recipients |
| C. | national recipients |
| D. | national donors |
| Answer» C. national recipients | |
| 1192. |
The kind of pull which is responsible for conduction of salts and water to aerial parts of plants from the roots is called |
| A. | potential pull |
| B. | transpiration pull |
| C. | kinetic pull |
| D. | osmotic pull |
| Answer» C. kinetic pull | |
| 1193. |
If the blood group of a person is B then the antibodies present in that person's blood is |
| A. | anti-O antibodies |
| B. | anti-OA antibodies |
| C. | anti-B antibodies |
| D. | anti-A antibodies |
| Answer» E. | |
| 1194. |
The adhere of water molecules to the walls of xylem is called |
| A. | cohesion |
| B. | adhesion |
| C. | aggression |
| D. | impression |
| Answer» C. aggression | |
| 1195. |
Recently taxonomist divided the organisms in to |
| A. | 5 kingdoms |
| B. | 2 kinds |
| C. | 2 kingdoms |
| D. | 5 kinds |
| Answer» B. 2 kinds | |
| 1196. |
The cell wall of kingdom Plantae organisms is made up of |
| A. | chitin |
| B. | cellulose |
| C. | polysaccharides |
| D. | lipids |
| Answer» C. polysaccharides | |
| 1197. |
The order in taxonomic hierarchies is known as a group of |
| A. | related class |
| B. | related phylum |
| C. | related family |
| D. | related genus |
| Answer» D. related genus | |
| 1198. |
Lion, tiger and swamp deer are extinct species in |
| A. | Pakistan |
| B. | India |
| C. | Africa |
| D. | America |
| Answer» B. India | |
| 1199. |
The main types of protists do not includes |
| A. | protozoan |
| B. | fungi-like |
| C. | Volvox and amoeba |
| D. | algae |
| Answer» D. algae | |
| 1200. |
The scientist Bu Ali Sina was born in |
| A. | 908 AD |
| B. | 809 AD |
| C. | 980 AD |
| D. | 890 AD |
| Answer» D. 890 AD | |