MCQOPTIONS
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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.
| 1101. |
The water in blood in which metabolites, salts, proteins and wastes are dissolved is called |
| A. | plasma |
| B. | glucose |
| C. | sucrose |
| D. | glycerol |
| Answer» B. glucose | |
| 1102. |
Considering the structure of human heart, the deoxygenated blood is received by |
| A. | left atrium |
| B. | right atrium |
| C. | upper atrium |
| D. | lower atrium |
| Answer» C. upper atrium | |
| 1103. |
The presence of sugar into the sieve tubes leads to |
| A. | decrease of solute concentration |
| B. | increase of solute concentration |
| C. | increase of solvent concentration |
| D. | decrease of solvent concentration |
| Answer» C. increase of solvent concentration | |
| 1104. |
On the formation of red blood cells (RBCs), the nucleus is |
| A. | multiplied |
| B. | divided |
| C. | absent |
| D. | present |
| Answer» E. | |
| 1105. |
The microorganisms that prepares their food from water and carbon dioxide are |
| A. | photosynthetic amoeba |
| B. | photosynthetic algae |
| C. | photosynthetic hydra |
| D. | photosynthetic flagella |
| Answer» C. photosynthetic hydra | |
| 1106. |
The substances that absorbs visible light are known as |
| A. | thylakoids |
| B. | pigments |
| C. | chromatin |
| D. | granum |
| Answer» C. chromatin | |
| 1107. |
The loss of electrons is known as |
| A. | anabolism |
| B. | metabolism |
| C. | oxidation |
| D. | reduction |
| Answer» D. reduction | |
| 1108. |
The five-carbon sugar in ATP molecule is known as |
| A. | phosphorus |
| B. | magnesium |
| C. | adenine |
| D. | ribose |
| Answer» E. | |
| 1109. |
During osmosis, the cells in which carbon dioxide diffuses after absorption in thin layer of water are |
| A. | mesophyll cells |
| B. | chlorophyll cells |
| C. | xylem cells |
| D. | phloem cells |
| Answer» B. chlorophyll cells | |
| 1110. |
The rhythmic contraction and expansion of artery when blood is forced to pass through it is called |
| A. | heart rate |
| B. | contracting rate |
| C. | relaxing rate |
| D. | pulse |
| Answer» E. | |
| 1111. |
The pathway on which oxygenated blood is carried to body tissues from heart and deoxygenated blood is carried to heart from body tissues is classified as |
| A. | aortic circulation |
| B. | pericardial circuit |
| C. | systemic circulation |
| D. | pericardium circuit |
| Answer» D. pericardium circuit | |
| 1112. |
The percentage of water in plasma is about |
| A. | 80-82% |
| B. | 90-92% |
| C. | 50-52% |
| D. | 60-62% |
| Answer» C. 50-52% | |
| 1113. |
The pressure of blood is high in |
| A. | arteries |
| B. | veins |
| C. | capillaries |
| D. | nerves |
| Answer» B. veins | |
| 1114. |
The components of blood circulatory system in humans includes |
| A. | blood |
| B. | blood vessels |
| C. | heart |
| D. | all of above |
| Answer» E. | |
| 1115. |
The attachment of oxygen to atoms of hydrogen makes the |
| A. | unstable association |
| B. | stable association |
| C. | oxidized association |
| D. | non-oxidized association |
| Answer» B. stable association | |
| 1116. |
The microorganism that gets the prepared food is non-photosynthetic |
| A. | protozoan |
| B. | algae |
| C. | hydra |
| D. | Volvox |
| Answer» B. algae | |
| 1117. |
The form of investment of energy in respiration is |
| A. | dark energy |
| B. | kinematic energy |
| C. | glycol-bond energy |
| D. | bond energy |
| Answer» E. | |
| 1118. |
The chemical formula of lactic acid is |
| A. | (C5)H5O5) |
| B. | (C3)H6O4) |
| C. | (C2)H6O3) |
| D. | (C8)H5O6) |
| Answer» D. (C8)H5O6) | |
| 1119. |
The nucleotide which is the energy currency of all the cells is |
| A. | adenosine monophosphate |
| B. | adenosine diphosphate |
| C. | adenosine triphosphate |
| D. | adenosine bimagnese |
| Answer» D. adenosine bimagnese | |
| 1120. |
The site of light reactions involved in photosynthesis are thylakoid membranes of |
| A. | phloem tissues |
| B. | xylem tissues |
| C. | sclerenchyma tissues |
| D. | chloroplasts |
| Answer» E. | |
| 1121. |
The released kinetic energy by the breakdown of enzymes is stored in bonds of ATP molecules in the form of |
| A. | potential energy |
| B. | artificial energy |
| C. | hydra energy |
| D. | thermal energy |
| Answer» B. artificial energy | |
| 1122. |
The kind of cellular respiration which occurs in the presence of oxygen is |
| A. | anaerobic respiration |
| B. | aerobic respiration |
| C. | nitrogenous respiration |
| D. | acidic respiration |
| Answer» B. aerobic respiration | |
| 1123. |
The site of occurrence of electron transport chain and Krebs cycle is |
| A. | support tissues |
| B. | nervous tissue |
| C. | mitochondria |
| D. | muscle tissue |
| Answer» D. muscle tissue | |
| 1124. |
The coenzyme (FAD) stands for |
| A. | Flavin adipose dinucleotide |
| B. | Folic adipose di-nuclear |
| C. | Folic adenine di-nuclear |
| D. | Flavin adenine dinucleotide |
| Answer» E. | |
| 1125. |
The process of using statistical and computational techniques for analyzing biological data is classified as |
| A. | socio-biology |
| B. | biotechnology |
| C. | bioinformatics |
| D. | genetics |
| Answer» D. genetics | |
| 1126. |
The statistical methods are used to |
| A. | deleting the data |
| B. | record the data |
| C. | analyze the data |
| D. | store the data |
| Answer» D. store the data | |
| 1127. |
20 Observations on malaria were listed by A.F.A King in |
| A. | 1906 |
| B. | 1883 |
| C. | 1887 |
| D. | 1980 |
| Answer» C. 1887 | |
| 1128. |
In the Italian word 'malaria', the "mala" means |
| A. | poisonous |
| B. | gaseous |
| C. | good |
| D. | bad |
| Answer» E. | |
| 1129. |
The alternative hypothesis is evaluated by |
| A. | query |
| B. | experimentation |
| C. | deduction |
| D. | analysis |
| Answer» C. deduction | |
| 1130. |
Considering kinds of epithelial tissues, the ciliated columnar epithelium is composed of |
| A. | elongated cells with cilia |
| B. | flat cells with flagella |
| C. | cube cells with cilia |
| D. | flat cells with cilia |
| Answer» B. flat cells with flagella | |
| 1131. |
The tissues that are composed of cells having the ability to divide are classified as |
| A. | meristematic tissues |
| B. | spinal tissues |
| C. | apical tissues |
| D. | secondary tissues |
| Answer» B. spinal tissues | |
| 1132. |
The process in which the smaller molecules move across the semi-permeable membrane with the help of water pressure is |
| A. | filtration |
| B. | osmosis |
| C. | facilitated diffusion |
| D. | diffusion |
| Answer» B. osmosis | |
| 1133. |
The minimum size of an object that can be seen under an electron microscope is |
| A. | 0.2 nanometer |
| B. | 0.5 nanometer |
| C. | 0.8 nanometer |
| D. | 1.5 nanometer |
| Answer» B. 0.5 nanometer | |
| 1134. |
The magnification of SEM is |
| A. | 10000 to 20000 |
| B. | 10000 to 100000 |
| C. | 10000 to 12000 |
| D. | none of above |
| Answer» C. 10000 to 12000 | |
| 1135. |
The name of scientist who introduced taxon of "order" in taxonomic hierarchy is |
| A. | Andrea Caesalpino |
| B. | Augustus Rivinus |
| C. | Tournefort |
| D. | John Ray |
| Answer» C. Tournefort | |
| 1136. |
In the binomial nomenclature, the second name represents |
| A. | species |
| B. | order |
| C. | kingdom |
| D. | class |
| Answer» B. order | |
| 1137. |
The basic unit of classification is |
| A. | species |
| B. | genus |
| C. | kingdom |
| D. | class |
| Answer» B. genus | |
| 1138. |
The taxonomic categories are also known as |
| A. | taxa |
| B. | hexa |
| C. | tetra |
| D. | none of above |
| Answer» B. hexa | |
| 1139. |
The method of proposing scientific names for differentiating living organisms is called |
| A. | binomial nomenclature |
| B. | nominal nomenclature |
| C. | amino nomenclature |
| D. | autotrophs nomenclature |
| Answer» B. nominal nomenclature | |
| 1140. |
The single-celled organism is called |
| A. | unicellular |
| B. | multicellular |
| C. | autotrophic |
| D. | heterotrophic |
| Answer» B. multicellular | |
| 1141. |
The number of elements that are found in nature is |
| A. | 12 |
| B. | 23 |
| C. | 96 |
| D. | 92 |
| Answer» A. 12 | |
| 1142. |
The word 'biology' comes from the language |
| A. | Greek |
| B. | Latin |
| C. | Arbi |
| D. | English |
| Answer» B. Latin | |
| 1143. |
The most famous book of Jabir-bin -Hayan is |
| A. | Al nabatat |
| B. | Al abil |
| C. | Al khail |
| D. | Al Wahoosh |
| Answer» B. Al abil | |
| 1144. |
The branch of biology which deals with the study of insects is classified as |
| A. | anatomy |
| B. | paleontology |
| C. | entomology |
| D. | morphology |
| Answer» D. morphology | |
| 1145. |
The ventricle of the heart which has most of the thickest wall is |
| A. | lower ventricle |
| B. | upper ventricle |
| C. | right ventricle |
| D. | left ventricle |
| Answer» E. | |
| 1146. |
The person having antigen B on surface of RBCs has |
| A. | blood group B |
| B. | blood group A |
| C. | blood group O |
| D. | blood group AB |
| Answer» B. blood group A | |
| 1147. |
The aorta is divided into common iliac arteries that includes |
| A. | hepatic iliac artery only |
| B. | external iliac artery only |
| C. | internal iliac artery |
| D. | hepatic and external iliac artery |
| Answer» E. | |
| 1148. |
The area of plants for storage or active metabolism is called |
| A. | sinks |
| B. | epidermis |
| C. | links |
| D. | sources |
| Answer» B. epidermis | |
| 1149. |
The inner side of guard cells is |
| A. | rough |
| B. | straight |
| C. | concave |
| D. | convex |
| Answer» D. convex | |
| 1150. |
The diffusion of water vapors is reduced as the |
| A. | air becomes humid |
| B. | temperature goes below 0 |
| C. | temperature goes above 55 |
| D. | stomatas blocked |
| Answer» B. temperature goes below 0 | |