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MCQOPTIONS
This section includes 2637 Mcqs, each offering curated multiple-choice questions to sharpen your 7th Class knowledge and support exam preparation. Choose a topic below to get started.
| 1051. |
Blood vessels and nerves are present in which part of the tooth? |
| A. | Pulp cavity |
| B. | Dentine |
| C. | Crown of a tooth |
| D. | Enamel |
| Answer» B. Dentine | |
| 1052. |
Which mineral is required for healthy teeth and bones? |
| A. | Iron |
| B. | Calcium |
| C. | Sodium |
| D. | Magnesium |
| Answer» C. Sodium | |
| 1053. |
Which of the following deals with the study of teeth? |
| A. | Dentistry |
| B. | Dermatology |
| C. | Neurology |
| D. | Cardiology |
| Answer» B. Dermatology | |
| 1054. |
Which of the following secrete digestive juices which convert complex substances of food into simpler substances? |
| A. | Liver |
| B. | Pancreas |
| C. | Both the above |
| D. | None of these |
| Answer» D. None of these | |
| 1055. |
Which of the following is part of the digestive tract? |
| A. | Small intestine |
| B. | Large intestine |
| C. | Both of these |
| D. | None of these |
| Answer» D. None of these | |
| 1056. |
Which of the following describes enamel? |
| A. | It is hard outer protective covering on the tooth. |
| B. | It is the cavity which contains nerves and blood vessels in a tooth. |
| C. | It is the soft, invisible covering present in a tooth. |
| D. | It is the nerve that connects tooth and the brain. |
| Answer» B. It is the cavity which contains nerves and blood vessels in a tooth. | |
| 1057. |
Which of the following is part of alimentary canal? |
| A. | Stomach |
| B. | Oesophagus |
| C. | Euccal cavity |
| D. | All of these |
| Answer» E. | |
| 1058. |
What helps the herbivores to snip off foliage from branches-? |
| A. | Canine teeth |
| B. | Large incisors |
| C. | sharp molars |
| D. | upper jaw |
| Answer» C. sharp molars | |
| 1059. |
What happens to the food when it enters the stomach from oesophagus? |
| A. | Food mixes with juices and digestion of carbohydrate starts. |
| B. | Food mixes with juices and digestion of protein starts. |
| C. | Food quickly moves into small intestine. |
| D. | Food quickly moves into large intestine. |
| Answer» C. Food quickly moves into small intestine. | |
| 1060. |
Which labelled part of tongue detects the flavor of lemon juice? |
| A. | (i) |
| B. | (ii) |
| C. | (iii) |
| D. | (iv) |
| Answer» C. (iii) | |
| 1061. |
Which of the following is the correct sequence of human nutrition? |
| A. | Ingestion\[\to \]egestion\[\to \]digestion absorption \[\to \]assimilation. |
| B. | Egestion\[\to \]ingestion absorption\[\to \] assimilation. |
| C. | Digestion\[\to \] assimilation\[\to \]ingestion \[\to \] absorption\[\to \] egestion. |
| D. | Ingestion\[\to \]digestion\[\to \]absorption assimilation \[\to \] egestion. |
| Answer» E. | |
| 1062. |
These are blood sucking parasites. |
| A. | Earthworm |
| B. | Hookworm |
| C. | Leeches |
| D. | Bedbugs |
| Answer» D. Bedbugs | |
| 1063. |
A fresh water organism which contains cytoplasm. |
| A. | Euglena |
| B. | Paramaecium |
| C. | Hydra |
| D. | Amoeba |
| Answer» E. | |
| 1064. |
A locomotory organ found in unicellular animal- |
| A. | Cilia |
| B. | flagella |
| C. | Sessile |
| D. | Pseudopodia |
| Answer» E. | |
| 1065. |
Which part of the alimentary canal is most acidic? |
| A. | Colon |
| B. | lleum |
| C. | Mouth |
| D. | Stomach |
| Answer» E. | |
| 1066. |
After digestion, the digested food is absorbed by blood while undigested food enters into which of the following parts of the alimentary Canal? |
| A. | Rectum |
| B. | Stomach |
| C. | Small intestine |
| D. | Large intestine |
| Answer» E. | |
| 1067. |
Siphoning is the mode of feeding alone in which type of animal. |
| A. | Humming bird |
| B. | Butterfly |
| C. | Ant |
| D. | Housefly |
| Answer» C. Ant | |
| 1068. |
Which of the following is the largest gland in human body? |
| A. | Pancreas |
| B. | Stomach |
| C. | Kidney |
| D. | Liver |
| Answer» E. | |
| 1069. |
Which enzyme helps in transfer of Trypsinogen to trypsin secreted from the walls of the small intestine? |
| A. | Proteinase |
| B. | Enterokinase |
| C. | Amylase |
| D. | Lactase |
| Answer» C. Amylase | |
| 1070. |
In which of the following parts of the alimentary canal, the liver and pancreas release their secretions? |
| A. | Large intestine |
| B. | Small intestine |
| C. | Stomach |
| D. | Oesophagus |
| Answer» C. Stomach | |
| 1071. |
In which part of the human digestive system digestion doesn't take place. |
| A. | Stomach |
| B. | Small Intestine |
| C. | Oesophagus |
| D. | Large Intestine |
| Answer» D. Large Intestine | |
| 1072. |
Which statement is correct about the villi? |
| A. | It increases the surface area for absorption of food. |
| B. | It decreases the surface area for absorption of food. |
| C. | It protects the lining of small intestine. |
| D. | It protects the lining of stomach. |
| Answer» B. It decreases the surface area for absorption of food. | |
| 1073. |
Which gland acts as mixed gland? |
| A. | Pancreas |
| B. | Duodenum |
| C. | Hypothalamus gland |
| D. | Digestive gland |
| Answer» B. Duodenum | |
| 1074. |
In which of the following parts of the alimentary canal the complete digestion and absorption of food takes place? |
| A. | Large intestine |
| B. | Small intestine |
| C. | Oesophagus |
| D. | Stomach |
| Answer» C. Oesophagus | |
| 1075. |
Which of the following sequences correctly represents the flow of food from mouth to anus? |
| A. | Oesophagus \[\to \] Stomach \[\to \] Small intestine \[\to \]Large intestine. |
| B. | Large intestine \[\to \] Oesophagus Stomach \[\to \] Small intestine. |
| C. | Small intestine\[\to \]Large intestine Oesophagus\[\to \] stomach. |
| D. | Stomach \[\to \] Small intestine Large intestine \[\to \] Oesophagus. |
| Answer» B. Large intestine \[\to \] Oesophagus Stomach \[\to \] Small intestine. | |
| 1076. |
DIRECTIONS: Look at the below picture and answer the given questions. What is structure C? |
| A. | Gall bladder |
| B. | Liver |
| C. | Stomach |
| D. | Heart |
| Answer» B. Liver | |
| 1077. |
DIRECTIONS: Look at the below picture and answer the given questions. What is structure I? |
| A. | Liver |
| B. | Pancreas |
| C. | Stomach |
| D. | Kidney |
| Answer» D. Kidney | |
| 1078. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. Look at the below diagram and answer the given questions. Teeth marked as I are |
| A. | Molars |
| B. | Premolars |
| C. | Incisors |
| D. | Canines |
| Answer» C. Incisors | |
| 1079. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. Look at the below diagram and answer the given questions. Teeth marked III are also called |
| A. | Tearing teeth |
| B. | canives |
| C. | nolars |
| D. | crocking teeth |
| Answer» E. | |
| 1080. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. Look at the below diagram and answer the given questions. Teeth used to grind food are marked as |
| A. | I |
| B. | II |
| C. | III |
| D. | IV |
| Answer» E. | |
| 1081. |
Raccoon is an example of which type of animal- |
| A. | Herbivore |
| B. | Omnivore |
| C. | Carnivore |
| D. | Parasite |
| Answer» C. Carnivore | |
| 1082. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. Look at the below diagram and answer the given questions. The teeth marked II represent |
| A. | canives |
| B. | incisors |
| C. | premolars |
| D. | molars |
| Answer» B. incisors | |
| 1083. |
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) The mode of taking in food into the body varies for different organisns. (ii) Complex components of food cannot be digested as such. (iii) Digestion of food begins in the mouth. |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct. |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» D. All statements are incorrect. | |
| 1084. |
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) At one end stomach receives food from food pipe (ii) At one end stomach opens into small intensives. (iii) Stomach mall releases HCl acid. |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct. |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» D. All statements are incorrect. | |
| 1085. |
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Permanent teeth lasts throughout life (ii) It is the second set of teeth. (iii) There are 32 milk teeth |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct. |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» C. All statements are correct. | |
| 1086. |
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Digestion in amoeba is intracellular. Reason (R): In the food vacuole the food becomes trapped and is digested by the action of digestive juices secreted into food vacuole |
| A. | Both A and R is true and R is the correct explanation of A. |
| B. | Both A and R is true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» B. Both A and R is true but R is not the correct explanation of A. | |
| 1087. |
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Rumen is the first of four chambers of stomach of ruminants Reason (R): In rumen the food gets partly digested and is called cud. |
| A. | Both A and R is true and R is the correct explanation of A. |
| B. | Both A and R is true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» C. A is true but R is false. | |
| 1088. |
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Digestion of carbohydrates, like starch, begins in buccal cavity. Reason (R): The digested food is absorbed in the blood vessels from small intestines. |
| A. | Both A and R is true and R is the correct explanation of A. |
| B. | Both A and R is true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» C. A is true but R is false. | |
| 1089. |
Important diet in herbivorous animal?s are- |
| A. | Protein |
| B. | Cellulose |
| C. | Fat |
| D. | Carbohydrate |
| Answer» C. Fat | |
| 1090. |
Which statement about the large intestine is false? |
| A. | No absorption of materials takes place in the given organ. |
| B. | First part of the given organ is called colon. |
| C. | The length of the given organ is 1.5 metres. |
| D. | It secretes mucus. |
| Answer» B. First part of the given organ is called colon. | |
| 1091. |
Which of the following represents the teeth marked Q in the given figure? |
| A. | Incisors |
| B. | Canines |
| C. | Molars |
| D. | Premolars |
| Answer» C. Molars | |
| 1092. |
Direction : Refer to the given figure of water cycle and answer the following questions. In the given figure if (1) represents the river water, then what does (4) represent? |
| A. | Condensation |
| B. | Respiration |
| C. | Transpiration |
| D. | Precipitation |
| Answer» D. Precipitation | |
| 1093. |
Consider the following statements. Select the option which correctly identifies true (T) and false (F) ones. (i) Microorganisms act upon the dead plants to produce humus. (ii) Autotrophs lie at the base of a food chain. (iii) Large scale cutting of trees is called afforestation. (iv) Branched part of a tree above the stem is called crown. |
| A. | i-T ii-F iii-T iv-F |
| B. | i-T ii-T iii-F iv-T |
| C. | i-T ii-F iii-F iv-T |
| D. | i-T ii-F iii-T iv-T |
| Answer» C. i-T ii-F iii-F iv-T | |
| 1094. |
Read the given statements and select the correct option, Statement 1: Forests prevent soil erosion. Statement 2: Canopy formed by crown of leaves of forest trees reduces the force and speed of raindrops. |
| A. | Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. |
| B. | Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. |
| C. | Statement 1 is true but statement 2 is false. |
| D. | Both statements 1 and 2 are false. |
| Answer» B. Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. | |
| 1095. |
Which of the following will happen if the population of snakes is increased in the given food web? |
| A. | The population of frog will increase. |
| B. | The population of peacock will decrease. |
| C. | There will be no effect on the population of hen. |
| D. | The population of grasshopper will increase. |
| Answer» E. | |
| 1096. |
Refer to the given diagrammatic representation of distribution of water on Earth and select the correct statements for X. Y and Z. (i) X is a persistent body of dense ice that is constantly moving under its own weight. (ii) Y is found below the water table and rainwater is its main source. (iii) Z is an important source of water to the perennial rivers. |
| A. | (i) and (ii) only |
| B. | (ii) and (iii) only |
| C. | (i) and (iii) only |
| D. | (i), (ii) and (iii) |
| Answer» B. (ii) and (iii) only | |
| 1097. |
Direction : Read the given data and select the correct option for the following questions.Raman carried out an experiment to find out how fast water can pass through four different types of soil. He put each type of soil in four pots with equal sized holes at the base and placed separate dishes at their bottom to collect water. He poured water in them one by one, and used a stopwatch to record the time taken for water to reach the level he had marked same in each dish. His recording is given in the table as shown below. Type of soilWXYZTime (in seconds)403562120What factors should Raman keep the same to ensure a fair test?(i) The amount of soil (ii) The size of the pot (iii) The shape of the dish (iv) The amount of water |
| A. | (iii) and (iv) only |
| B. | (i) and (ii) only |
| C. | (ii), (iii) and (iv) only |
| D. | (i), (ii), (iii) and (iv) |
| Answer» C. (ii), (iii) and (iv) only | |
| 1098. |
Mr Khanna had a pond in his garden, filled with all kinds of aquatic plants. He wanted to prevent mosquitoes from breeding in the pond without harming the plants in any way. He could _______. (i) Add salt into the water (ii) Add some goldfish into the pond (iii) Spray a film of oil on the surface of the pond |
| A. | (i) only |
| B. | (ii) only |
| C. | (iii) only |
| D. | (i), (ii) and (iii) |
| Answer» C. (iii) only | |
| 1099. |
A large area of forest was cleared by burning. Which of the following statements is/are correct regarding the consequences of this activity? (i) Increase in soil erosion as soil is directly exposed to wind and rain. (ii) The land will have more fresh air as there are lesser trees to take in oxygen. (iii) Wildlife will easily thrive in the cleared area because more space is available now. (iv) New trees will grow faster and replace the burnt forest soon as the ash of the burnt trees will make the soil more fertile. |
| A. | (i) only |
| B. | (i) and (iv) only |
| C. | (i), (ii) and (iv) only |
| D. | (i), (ii), (iii) and (iv) |
| Answer» B. (i) and (iv) only | |
| 1100. |
The steps of wastewater treatment plant are given below randomly. (i) Wastewater is passed into sedimentation tank. (ii) Sludge is decomposed by anaerobic bacteria. (iii) Wastewater is passed through bar screens. (iv) Wastewater is passed to grit and sand removal tank. (v) Solids settle at the bottom and floatable materials are removed by skimmer. (vi) Aeration of water takes place. (vii) Disinfection of water by adding chlorine. Which of the following represents correct sequence of steps? |
| A. | (iii)\[\to \](iv)\[\to \](i) \[\to \](v)\[\to \](ii)\[\to \](vi)\[\to \](vii) |
| B. | (iv)\[\to \](iii)\[\to \](i)\[\to \](v)\[\to \](ii)\[\to \](vi)\[\to \](vii) |
| C. | (iii)\[\to \](iv)\[\to \](v)\[\to \](i)\[\to \](ii)\[\to \](vi) \[\to \](vii) |
| D. | (iii)\[\to \] (iv)\[\to \] (i)\[\to \](ii)\[\to \](v)\[\to \](vi)\[\to \] (vii) |
| Answer» B. (iv)\[\to \](iii)\[\to \](i)\[\to \](v)\[\to \](ii)\[\to \](vi)\[\to \](vii) | |