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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.
| 951. |
Lichens are a symbiotic association of algae sad fungi. Which of the following statements is correct in respect of lichens? |
| A. | Fungus supplies water and minerals to cells of algae. |
| B. | Algae supplies food to the fungus. |
| C. | Fungus supplies water, minerals and food to algae and algae do not supply anything. |
| D. | Both (a) and (b) are correct. |
| Answer» E. | |
| 952. |
Which of the following is true about parasitic plants? (i) They absorb food from their host. (ii) They compete with the host for sunlight.(iii) They kill the host plant eventually. |
| A. | (i) and (ii) only |
| B. | (i) and (iii) only |
| C. | (ii) and (iii) only |
| D. | (i), (ii) and (iii) |
| Answer» C. (ii) and (iii) only | |
| 953. |
Which of the following part is modified into pitcher in pitcher plant? |
| A. | Leaf |
| B. | Nodes |
| C. | Stem |
| D. | Roots |
| Answer» B. Nodes | |
| 954. |
Which of the following is insectivorous? |
| A. | Mushroom |
| B. | Cuscuta |
| C. | Mucor |
| D. | Nepenthes |
| Answer» E. | |
| 955. |
Refer to the given figure of human digestive system, What is X here and what is its function? |
| A. | Small intestine-Absorbs nutrients from digested food |
| B. | Stomach - Breaks down food using acids and enzymes |
| C. | Appendix - Has no specific function in the body |
| D. | Rectum - Temporary storage of faeces before being expelled out of the body. |
| Answer» D. Rectum - Temporary storage of faeces before being expelled out of the body. | |
| 956. |
The given figure shows the movement of food through the oesophagus. This movement is aided by the muscles of the oesophagus in a wave-like action called |
| A. | Diapedesis |
| B. | Peristalsis |
| C. | Rumination |
| D. | Muscularisation. |
| Answer» C. Rumination | |
| 957. |
Read the given statements and select the correct option. Statement 1: The digested food is absorbed mainly in the small intestine. Statement 2: The inner wall of small intestine contains numerous finger-like projections called villi. |
| 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 in 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 in not the correct explanation of statement 1. | |
| 958. |
Refer to the given figure. It illustrates (Bread) (Fungal mycellum) |
| A. | Autotrophic nutrition |
| B. | Saprotrophic nutrition |
| C. | Parasitic nutrition |
| D. | Symbiotic nutrition. |
| Answer» C. Parasitic nutrition | |
| 959. |
Refer to the given graph which shows the effect of pH on the activities of three enzymes, X, Y and Z. Which of the following are the possible locations in the alimentary canal of man where the three enzymes can be found? |
| A. | XYZSmall intestineMouthStomach |
| B. | XYZMouthStomachSmall intestine |
| C. | XYZStomachSmall intestineMouth |
| D. | XYZStomach Mouth Small intestine |
| Answer» E. | |
| 960. |
Priyanka took a destarched potted plant and set up an experiment as shown in the figure. She left the plant in sunlight for few hours and then tested the leaves X and Y for starch. Leaf X did not give starch test while leaf Y showed presence of starch. What is proved by this experiment? |
| A. | Chlorophyll is necessary for photo-synthesis. |
| B. | Carbon dioxide is necessary for photo- synthesis. |
| C. | Light is necessary for photosynthesis. |
| D. | Oxygen is given out during photo-synthesis. |
| Answer» C. Light is necessary for photosynthesis. | |
| 961. |
The given diagram shows a destarched, variegated leaf, partly covered by black paper. The plant is placed in bright light for several hours. Four discs are then cut from the leaf in the positions shown and are tested for starch. Which discs do/does not contain starch? |
| A. | 1, 3 and 4 only |
| B. | 1 and 2 only |
| C. | 2 only |
| D. | 3 and 4 only |
| Answer» B. 1 and 2 only | |
| 962. |
Direction: Refer to the given diagram showing, a part of human alimentary canal and answer the following questions, Which of the following statements is/are correct for the structure labelled Z? |
| A. | Absorption of digested food takes place here. |
| B. | The undigested food is passed out to the structure Y. |
| C. | It has very large surface area due to presence of numerous villi. |
| D. | All of these |
| Answer» E. | |
| 963. |
Direction: Refer to the given diagram showing, a part of human alimentary canal and answer the following questions, Which of the labelled structures removes most water from the undigested food? |
| A. | X |
| B. | Y |
| C. | Z |
| D. | None of these |
| Answer» C. Z | |
| 964. |
The steps of the digestive process are listed below in a random order. (i) Water and some salts from undigested food are absorbed. (ii) Food is liquefied; breakdown of proteins begins. (iii) Food is moistened; breakdown of starch begins. (iv) Proteins, carbohydrates, and fats break down; nutrients are majorly absorbed into the bloodstream. Select the option that gives the correct order of these events as food passes through the human digestive tract. |
| A. | (ii), (iv), (i), (iii) |
| B. | (iv), (ii), (iii), (i) |
| C. | (i), (iii), (ii), (iv) |
| D. | (iii), (ii), (iv), (i) |
| Answer» E. | |
| 965. |
Which enzymes are likely to act on the baked potatoes eaten by a man, starting from the mouth as they move down the alimentary canal? |
| A. | Salivary amylase \[\to \] pancreatic amy- lase \[\to \]Disaccharidases |
| B. | Pancreatic amylase \[\to \] salivary amylase \[\to \]Lipase |
| C. | Salivary maltase \[\to \] Lipase \[\to \] Trypsinogen |
| D. | Salivary maltase \[\to \] pancreatic amylase Trypsin |
| Answer» B. Pancreatic amylase \[\to \] salivary amylase \[\to \]Lipase | |
| 966. |
In an experiment demonstrating the evolution of oxygen in Hydrilla, sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favourable? |
| A. | Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate. |
| B. | Amount of oxygen evolved decreases as the availability of carbon dioxide increases. |
| C. | Amount of oxygen evolved increases as the availability of carbon dioxide increases. |
| D. | Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate. |
| Answer» D. Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate. | |
| 967. |
The given figure shows human digestive system. In which labelled part digestion of fat is completed? |
| A. | P |
| B. | R |
| C. | S |
| D. | Q |
| Answer» C. S | |
| 968. |
Read the given paragraph where few words have been italicized.The gall bladder secretes bile juice which is stored in the liver. Bile breaks down fats into tiny droplets that can be digested and absorbed more easily. The digestive juices then act on these tiny droplets to form simpler compounds known as am/no acids and glycerol.Select the correct statement regarding this. |
| A. | The positions of gall bladder and liver should be interchanged. |
| B. | Amino acids and glycerol should not be replaced as they are correctly mentioned. |
| C. | Fats should be replaced by starch whereas am/no acids should be replaced by peptides. |
| D. | The positions of fats and glycerol should be interchanged. |
| Answer» B. Amino acids and glycerol should not be replaced as they are correctly mentioned. | |
| 969. |
Read the given statements.(i) Paramecium has stiff hair-like structures called __ all over its body, which are used for __.(ii) Hydra has a number of __ around its mouth that entangle small aquatic animals and kill them with their__ cells.(iii) Frog uses its long, sticky __ to catch insects.(iv) Mosquito sucks up the blood of animals with its __.Select the option which correctly fills the blanks in any two of these statements. |
| A. | (ii) - Cilia, Absorptive; (iii) - Hand |
| B. | (i) - Tentacles, Ingestion; (iv) - Feeding tube |
| C. | (i) - Cilia, Ingestion; (ii) - Tentacles, Stinging |
| D. | (iii) - Tongue; (iv) - Pseudopodia |
| Answer» D. (iii) - Tongue; (iv) - Pseudopodia | |
| 970. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 The partly digested food reaches the lower part of small intestines and digestion of all components of food is completed here by intestinal juice. Which enzyme is secreted by small intestine? |
| A. | Amylase |
| B. | pepsin |
| C. | tripsin |
| D. | HCl |
| Answer» D. HCl | |
| 971. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 The partly digested food reaches the lower part of small intestines and digestion of all components of food is completed here by intestinal juice. Which gland is called eargest gland in the body? |
| A. | Stomach |
| B. | pancreas |
| C. | Liver |
| D. | heart |
| Answer» D. heart | |
| 972. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 The partly digested food reaches the lower part of small intestines and digestion of all components of food is completed here by intestinal juice. What are proteins changed into? |
| A. | Amino acid |
| B. | HCl acid |
| C. | Pepsin |
| D. | starch |
| Answer» B. HCl acid | |
| 973. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 A new born body has no teeth. Teeth begin to appear when the baby is six to seven months old. By the age of three year children have 20 teeth. Which teeth are called grinding teeth |
| A. | Incisors |
| B. | canines |
| C. | Premolars |
| D. | molars |
| Answer» E. | |
| 974. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 A new born body has no teeth. Teeth begin to appear when the baby is six to seven months old. By the age of three year children have 20 teeth. Which is the layer of the teeth below the enamel? |
| A. | Pulp |
| B. | gum |
| C. | dentive |
| D. | root |
| Answer» D. root | |
| 975. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Our stomach expands when the food entives and contracts when it goes out. Thus the stomach can expand and contract. The enzyme secreted by the stomach is |
| A. | tripain |
| B. | pepsin |
| C. | Amylase |
| D. | laile |
| Answer» C. Amylase | |
| 976. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Our stomach expands when the food entives and contracts when it goes out. Thus the stomach can expand and contract. Our stomach is located |
| A. | In the left side of the body |
| B. | In the right side of the body |
| C. | Below the abdomen |
| D. | In the chest |
| Answer» B. In the right side of the body | |
| 977. |
The process of breakdown of food particles into small pieces is called _______. |
| A. | Digestion |
| B. | Mastication |
| C. | Peristalsis |
| D. | Diffusion |
| Answer» C. Peristalsis | |
| 978. |
DIRECTIONS: Match the column I with column II and select the correct answers using the code given below the columns. Column-I Column-II (A) Unicellular (p) omnivore (B) Blood sucking (q) Locomotion (C) Raccoon (r) amoeba (D) Pseudopodia (s) leech |
| A. | (A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (p), (D) \[\to \] (q) |
| B. | (A) \[\to \] (r), (B) \[\to \] (s), (C) \[\to \] (p), (D) \[\to \] (q) |
| C. | (A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (s), (D) \[\to \] (r) |
| D. | (A) \[\to \] (r), (B) \[\to \] (p), (C) \[\to \] (q), (D) \[\to \] (s) |
| Answer» C. (A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (s), (D) \[\to \] (r) | |
| 979. |
The figure given below shows a part of the human alimentary canal. Which of the two labelled structures produce substances involved in the conversion of fats into fatty acids and glycerol? |
| A. | J and K |
| B. | J and N |
| C. | K and L |
| D. | L and M |
| Answer» E. | |
| 980. |
DIRECTIONS: Match the column I with column II and select the correct answers using the code given below the columns. Column-I Column-II (A) Salivary glands (p) pepsin (B) Liver (q) trypoin (C) Small in trstive (r) amylase (D) Stomach (s) Bile |
| A. | (A) \[\to \] (r), (B) \[\to \] (s), (C) \[\to \] (q), (D) \[\to \] (p) |
| B. | (A) \[\to \] (r), (B) \[\to \] (q), (C) \[\to \] (p), (D) \[\to \] (s) |
| C. | (A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (q), (D) \[\to \] (p) |
| D. | (A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (s), (D) \[\to \] (r) |
| Answer» B. (A) \[\to \] (r), (B) \[\to \] (q), (C) \[\to \] (p), (D) \[\to \] (s) | |
| 981. |
DIRECTIONS: Match the column I with column II and select the correct answers using the code given below the columns. Column-I Column-II (A) Incisors (p) Grinding teeth (B) Canines (q) Cracking teeth (C) Premolars (r) Cutting teeth (D) Molars (s) Tearing teeth |
| A. | (A) \[\to \] (p), (B) \[\to \] (s), (C) \[\to \] (q), (D) \[\to \] (r) |
| B. | (A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (s), (D) \[\to \] (r) |
| C. | (A) \[\to \] (r), (B) \[\to \] (s), (C) \[\to \] (q), (D) \[\to \] (p) |
| D. | (A) \[\to \] (r), (B) \[\to \] (q), (C) \[\to \] (s), (D) \[\to \] (p) |
| Answer» D. (A) \[\to \] (r), (B) \[\to \] (q), (C) \[\to \] (s), (D) \[\to \] (p) | |
| 982. |
Egestion is |
| A. | The storage of undigested and waste material in rectum |
| B. | Removal of faucal material through anus from time to time |
| C. | both the above are correct |
| D. | none of the above is correct |
| Answer» D. none of the above is correct | |
| 983. |
From where does saliva come in our mouth? |
| A. | when we see some food of pure liking |
| B. | when we are quite hungry |
| C. | it is secreted by salivary glands situated in our mouth |
| D. | none of the above is correct |
| Answer» D. none of the above is correct | |
| 984. |
We vomit out food, because |
| A. | it is not to our taste |
| B. | it is poisonous and should not be allowed to enter our body |
| C. | it is not accepted by our stomach |
| D. | all the above are correct |
| Answer» D. all the above are correct | |
| 985. |
Assimilation is |
| A. | the process of change of digested absorbed substances into complex substances and its use. |
| B. | Utilization by living organisms of absorbed food materials in the process of growth, reproduction and repair. |
| C. | Both the above are correct. |
| D. | None of the above is correct |
| Answer» D. None of the above is correct | |
| 986. |
Tongue |
| A. | is a fleshy muscular organ and is attached at the back to the floor of buccal cavity. |
| B. | mixes saliva with food during chewing and helps in swallowing food. |
| C. | helps us to taste food. |
| D. | all the above are correct. |
| Answer» E. | |
| 987. |
It is secreted by salivary glands and its function is to break down starch into sugars. It is |
| A. | Pancreatic juice |
| B. | bile juice |
| C. | Saliva |
| D. | none of these |
| Answer» D. none of these | |
| 988. |
The given figure shows a part of human digestive system. Which of the following represent 'P' in the given figure? |
| A. | Pancreas |
| B. | Liver |
| C. | Gall bladder |
| D. | Duodenum |
| Answer» B. Liver | |
| 989. |
In grass-eating animals, the grass is stored in a part of the stomach where the food gets converted into cud. This part is called |
| A. | stomach |
| B. | rumen |
| C. | rumination |
| D. | ruminant |
| Answer» C. rumination | |
| 990. |
It is a large cream colored gland and is located just below the stomach. It is |
| A. | liver |
| B. | pancreas |
| C. | heart |
| D. | none of these |
| Answer» C. heart | |
| 991. |
It is a carbohydrate and its digestion begins in buccal cavity. It is |
| A. | cellulose |
| B. | starch |
| C. | proteins |
| D. | vitamins |
| Answer» C. proteins | |
| 992. |
The main function of the human digestive system is to |
| A. | Break down foods for absorption into the blood |
| B. | Exchange oxygen and carbon dioxide in the lungs |
| C. | Release energy from sugars within the cells |
| D. | Carry nutrients to all parts of the body |
| Answer» B. Exchange oxygen and carbon dioxide in the lungs | |
| 993. |
Select the one who first discovered one-celled animals |
| A. | Charaka |
| B. | Anton Leeuwenhoek |
| C. | Marcello Malpighi |
| D. | Galen |
| Answer» C. Marcello Malpighi | |
| 994. |
Which one is incorrect about liver? |
| A. | It stores proteins and fats |
| B. | It purifies blood |
| C. | It removes and stores iron from dead red blood cells |
| D. | It helps in digestion by producing bile |
| Answer» B. It purifies blood | |
| 995. |
The function of the acid Secreted by inner lining of stomach is |
| A. | Kills many bacteria |
| B. | Makes the medium in the stomach acidic |
| C. | Helps the digestive juices to act |
| D. | All the above |
| Answer» E. | |
| 996. |
What is the function of mucous secreted, by the inner lining of stomach? |
| A. | Kills many bacteria |
| B. | Makes medium in stomach acidic. |
| C. | Protects lining of stomach |
| D. | All the above |
| Answer» D. All the above | |
| 997. |
Nutrients digested by amoeba are |
| A. | Sugar |
| B. | Cellulose |
| C. | Protein |
| D. | all of the above |
| Answer» E. | |
| 998. |
Which is the largest chamber in the stomach of ruminant? |
| A. | Omasum |
| B. | Rumen |
| C. | Aboniasurn |
| D. | Rsticukim |
| Answer» C. Aboniasurn | |
| 999. |
The canine of our teeth helps in ______. |
| A. | tearing the food |
| B. | grinding the food |
| C. | biting the food |
| D. | cutting the food |
| Answer» B. grinding the food | |
| 1000. |
The other name of defecation is _______. |
| A. | Assimilation |
| B. | Absorption |
| C. | Eyestion |
| D. | Ingestion |
| Answer» D. Ingestion | |