Q 1 – Which of the following statements about the autotrophs is incorrect?
(A) They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll.
(B) They store carbohydrates in the form of starch.
(C) They convert carbon dioxide and water into carbohydrates in the absence of sunlight.
(D) They constitute the first trophic level in food chains U.1
Ans. Option (C) is correct.
Q 2 – In which of the following groups of organisms, food material is broken down outside the body and absorbed?
(A) Mushroom, green plants, Amoeba
(B) Yeast, mushroom, bread mould
(C) Paramecium, Amoeba, Cuscuta
(D) Cuscuta, lice, tapeworm
Ans. Option (B) is correct
Q 3 – Which is the correct sequence of parts in humaa alimentary canal?
(A) Mouth→ stomach → small intestine →, oesophagus → large intestine
(B) Mouth→ oesophagus → stomach→ large intestine → small intestine
(C) Mouth → stomach→ oesophagus → small intestine → large intestine
(D) Mouth → oesophagus → stomach → small intestine → large intestine
Ans. Option (D) is correct
Q 4 – If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?
(A) Proteins breaking down into amino acids
(B) Starch breaking down into sugars
(C) Fats breaking down into fatty acids and
(D) Absorption of vitaminsglycerol
Ans. Option (B) is Correct.
Q 5 – Select the correct statement.
(A) Heterotrophs do not synthesise their own food.
(B) Heterotrophs utilise solar energy for photosynthesis.
(C) Heterotrophs synthesise their own food.
(D) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates.
Ans. Option (A) is correct
Q 6 – The autotrophic mode of nutrition requires
(A) carbon dioxide and water
(B) chlorophyll
(C) sunlight
(D) all of these
Ans. Option (D) is correct
Q 7 – The inner lining of stomach is protected by one of the following from hydrochloric acid. Choose the correct one.
(A). Pepsin
(B) Mucus
(C) Salivary amylase
(D) Bile
Ans. Option (B) is correct.
Q 8 – A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
(A) complex proteins
(B) simple proteins
(C) fats
(D) starch
Ans. Option (D) is correct
Q 9 – The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
(A) cytoplasm
(B) mitochondria
(C) chloroplast
(D) nucleus
Ans. Option (B) is correct
Q 10 – The correct sequence of anaerobic reactions in yeast
(A) Glucose Pyruvate 
Pyruvate 
Ethanol + Carbon dioxide
(B) Glucose Pyruvate Pyruvate
Lactic acid
(C) Glucose Pyruvate PyruvateLactic acid
(D) Glucose Pyruvate Pyruvate Ethanol + Carbon Dioxide
Ans. Option (D) is correct.
Q 11 – Which of the following statement(s) is (are) correct?
(i) Pyru% at an he con% erted into ethanol and carbon dioxide by yeast.
(ii) Fermentation takes place in aerobic bacteria.
(iii) Fermentation takes place in mitochondria.
(iv) Fennell to don is a form of anaerobic respiration.
(A) (i) and (iii)
(B) (ii) and (iv)
(C) (i) and (iv)
(D) (ii) and (iii)
(Ans. Option (C) is correct
Q 12 – During deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in the
(A) cytoplasm
(B) chloroplast
(C) mitochondria
(D) golgi body
Ans. Option (A) is correct
Q 13 – Which of the following completes the given equation? Glucose + Oxygen (?)
(A) Only carbon dioxide + water + energy
(B) Only carbon dioxide + water
(C) Only carbon dioxide
(D) Only water + energy
Ans. Option (A) is correct.
Q 14 – Which of the following take place after we exercise?
(A) Out body needs more oxygen.
(B) Our body needs to replace the energy used.
(C) Our body needs to get rid of excess carbon dioxide.
(D) All of these
Ans. Option (D) is correct
Q 15 – Which of these statements is correct about alveoli?
(B) They form a very large surface area.
(B) They have a very thin wall.
(B) They are covered with blood capillaries.
(D) All of these
Ans. Option (D) is correct
Q 16 – As air passes through the nasal cavity, it is
(A) Filtered in the nostrils
(B) Moistened by mucus
(C) Warmed to the body temperature
(D) All of these
Ans. Option (D) is correct
Q 17 – What prevents back flow of blood inside the heart during contraction?
(A) Valves in heart
(B) Thick muscular walls of ventricles
(C) Thin walls of atria
(D) All of the above
Ans. Option (A) is correct
Q 18 – Single circulation, i.e., blood flows through the heart only once during one cycle of passage through the only once during one cycle of passage through the body, is exhibited by
(A) Labeo, Chameleon, Salamander
(B) Hippocampus, Exocoetus, Anabas
(C) Hyla, Rana, Draco
(D) Whale Dolphin Turtle
Ans. Option (B) is correct.
Q 19 – The blood leaving the tissues becomes richer in
(A) carbon dioxide
(B) Water
(C) haemoglobin
(D) oxygen
Ans. Option (A) is correct
Q 20 – The xylem in plants are responsible for
(A) transport of water
(B) transport of food
(C) transport of amino
(D) acids transport of oxygen
Ans. Option (A) is correct
Q 21 – Which of the following statement(s) is (are) true about heart?
(i) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs.
(ii) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs.
(iii) Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts.
(iv) Right atrium receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body
(A) (i)
(B) (ii)
(C) (ii) and (iv)
(D) (i) and (iii)
Ans. Option (C) is correct.
Q 22 – In which of the following vertebrate group/ groups, heart does not pump oxygenated blood to different parts of the body?
(A) Pisces and amphibians
(B) Amphibians and reptiles
(C) Amphibians only
(D) Pisces only
Ans. Option (D) is correct
Q 23 – Choose the correct statement that describes arteries.
(A) They have thick elastic walls, blood flows under high pressure; collect blood from different organs and bring it back to the heart.
(B) They have thin walls with valves inside, blood flows under low pressure and carry blood away from the heart to various organs of the body.
(C) They have thick elastic walls, blood flows under low pressure; carry blood from the heart to various organs of the body.
(D) They have thick elastic walls without valves inside, blood flows under high pressure and carry blood away from the heart to different parts of the body.
Ans. Option (D) is correct.
Q 24 – Which of these statements is correct about the function of blood?
(A) It helps in transportation of respiratory gases.
(B) It regulates body temperature.
(C) It helps in transportation of waste products.
(D)All the above
Ans. Option (D) is correct
Q 25 – The filtration units of kidneys are called
(A) ureter
(B) urethra
(C) neurons
(D) nephrons
Ans. Option (D) is correct.
Q 26 – The kidneys in human beings are a part of the system for
(A) nutrition
(B) respiration
(C) excretion
(D) transportation.
Ans. Option (C) is correct
Q 27 – Match the words of Column (A) with that of Column (B)
| S. No. | Column (A) | Column (B) | |
| A | Phloem | (i) | Excretion |
| B | Nephron | (ii) | Translocation of food |
| C | Veins | (iii) | Clotting of blood |
| D | Platelets | (iv) | Deoxygenated blood |
(A) A – (ii), B – (i), C – (iv), D – (iii)
(B) A – (iii), B – (ii), C – (i), D – (iv)
(C) A – (iv), B- (iii), C – (ii), D – (i)
(D) A – (i), B – (iv), C – (iii) D – (iv)
Ans. Option (A) is correct
Q 28 – Which of the following is the structural and functional unit of the excretory system?
(A) Neuron
(B) Nephron
(C) Alveolus
(D) Both (A) and (B)
Ans. Option (B) is correct.
Q 29 – Choose the correct path of urine in our body
(A) kidney ureter —)urethra —) urinary bladder
(B) kidney —) urinary bladder urethra —)ureter
(C) kidney —) ureters urinary bladder —)urethra
(D) urinary bladder —) kidney —) ureter —) urethra
Ans. Option (C) is correct.
Q 30 – Which of the following substances are removed from blood in the kidneys?
(A) Water
(B) Urea
(C) Sodium
(D) Ammonia
Ans. Option (B) is correct.
Q 31 – Each nephron has a cup shaped upper end called
_________ which contains a __________
(A) Bowman’s capsule, Ampulla
(B) Capillaries, Bowman’s capsule
(C) Ampulla, Glomerulus
(D) Bowman’s capsule, Glomerulus
Ans. Option (D) is correct.
Q 32 – Which of the following is used artificially to remove nitrogenous waste products from the blood?
(A) Ventilator
(B) Transfusion
(C) Hemodialysis
(D) Angiogram
Ans. Option (C) is correct
(i) Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
(A) Both A and R are true and R is the correct explanation of A.
(B) Both A and R are true but R i’ NOT the correct explanation of A.
(C) A is true but R is false.
(D) A is false and R is true
Q 33 – Assertion (A): lIC1 converts pepsinogen into active enzyme pepsin.
Reason (R): Pepsin converts protein into proteoses and peptones.
Ans. Option (B) is coil t. LI.
Q 34 – Assertion (A): Digestion breaks large complex molecules to simple smaller molecules which can be easily absorbed
Reason (R): Digestion is necessary for the absorption of all molecules.
Ans. Option (C) is correct
Q 35 – Assertion (A): Muscles of stomach will possess thick layers of muscle fibers
Reason (R): These muscles help in mixing the food with the enzymes present in the alimentary canal.
Ans. Option (A) is correct.
Q 36 – Assertion (A): Lipases help in emulsification of fats.
Reason (R): Lipases hydrolyses fats and oils.
Ans. Option (D) is correct.
Q 37 – Assertion (A): Photosynthesis is an anabolic process.
Reason (R): The process of photosynthesis occurs in chlorophyll.
Ans. Option (C) is correct
Q 38 – Assertion (A): Energy is used during the process of respiration,
Reason (R): Respiration stores energy in the form of ATP.
Ans. Option (D) is correct
Q 39 – Assertion (A): Humans are not truly aerobic.
Reason (R): They produce lactic acid anaerobically.
Ans. Option (B) is correct
Q 40 – Assertion (A): In humans, there is a complex respiratory system.
Reason (R): Human skin is impermeable to gases.
Ans. Option (B) is correct.
Q 41 – Assertion (A): Alveoli contain an extensive network of blood vessels.
Reason (R): Alveoli is the site where exchange of gases occurs.
Ans. Option (A) is correct
Q 42 – Assertion (A): The muscular walls of ventricles are thicker than auricles.
Reason (R): This helps in preventing the back flow of blood.
Ans. Option (C) is correct.
Q 43 – Assertion (A): In human heart, there is no mixing of oxygenated and deoxygenated blood.
Reason (R): Valves are present in the heart which allows the movement of blood in one direction only.
Ans. Option (B) is correct.
Q 44 – Assertion (A): Valves are present in the arteries.
Reason (R): Arteries carry oxygenated blood from heart to different body parts except pulmonary artery.
Ans. Option (D) is correct
Q 45 – Assertion (A): Plants have low energy needs.
Reason (R): Plant bodies have large proportion of dead cells.
Ans. Option (A) is correct
Q 46 – Assertion (A): Human body produces highly toxic substances, which if not eliminated may cause the death.
Reason (R): Excretory substance removes nitrogenous waste from the body.
Ans. Option (B) is correct.
Q 47 – Assertion (A): Excretory unit of kidneys are nephrons.
Reason (R): It has no role in secretion of urine.
Ans. Option (C) is correct
Q 48 – Assertion (A): Haemodialysis can save the life of patients with kidney failure.
Reason (R): Waste products like urea can be removed from the blood by haemodialysis.
Ans. Option (A) is correct
Q 49 – Assertion (A): In humans, major amount of water p, absorbed by the tubular part of nephron.
Reason (R): Absorption of water depends on the dissolved waste to be excreted from the body.
Ans. Option (B) is correct.
(ii) Read the given passage and answer any of the four questions from Q.1. to Q.5.
Sanjana is suffering from a frequent stomach pain and vomiting. She went to the Doctor. The doctor asked her to go for an ultrasound. In the report, a stone was found in her gall bladder. Doctor asked her to remove the gall bladder by operation. But she was reluctant to go for the operation
Q 50 – The role played by gall bladder in human body is
(A) To store bile
(B) To secrete bile
(C) To emulsify fats
(D) To digest fats
Ans. Option (A) is correct.
Q 51 – Removal of gall bladder
(A) affects the person’s health
(B) Has no effect on the person’s health
(C) Effects the secretion of bile
(D) Effects the digestion of proteins
Ans. Option (B) is correct
Q 52 – Which of the following statement is correct about bile?
(A) It helps in emulsification of fat.
(B) It helps in digestion of carbohydrates
(C) It helps in absorption of digested food.
(D) It helps in the egestion of undigested food.
Ans. Option (A) is correct.
Q 53 – Which part of alimentary canal receives bile from the liver?
(A) Stomach
(B) Small intestine
(C) Large intestine
(D) Oesophagus
Ans. Option (B) is correct.
Q 54 – What is the function of bile salt in the intestine?
(A) Activator of lipase
(B) Emulsifier
(C) Co factor of cholesteryl esterase
(D) Inhibitor of lipid absorption
Ans. Option (B) is correct.
The given diagram is of human digestive human. Study the diagram and answer any of the four questions from Q.I. to Q.5.
Q 55 –Which of these correctly represent the labels B, C, D and E?
(A) B- Oesophagus, C- Liver, D- Stomach, E-pancreas
(B) B- Pancreas, C- Oesophagus, D- Liver, E-Stomach
(C) B- Stomach, C- Pancreas, D- Oesophagus, E-Liver
(D) B- Liver, C- Stomach, D- Pancreas, E-Oesophagus
Ans. Option (A) is correct.
Q 56 – The secretion that is released by label C is:
(A) Bile
(B) Pepsin
(C) Saliva
(D) Gastric juice
Ans. Option (A) is correct.
Q 57 – Name the digestive juice that lacks enzyme but helps in digestion.
(A) Bile juice
(B) Pancreatic juice
(C) Ptyalin
(D) Pepsin
Ans. Option (A) is correct.
Q 58 – The digestion of food starts in
(A) A
(B) D
(C) F
(D) E
Ans. Option (A) is correct.
Q 59 – In case of diarrhoea, which major process does not takes place normally in region F?
(A) Absorption of food
(B) Absorption of water
(C) Secretion of hormones
(D) Removal of waste material
Ans. Option (B) is correct
Q 60 – The process X occurs in part of cell.
(A) Mitochondria and cytoplasm respectively
(B) Cytoplasm and mitochondria respectively
(C) Both takes place in cytoplasm
(D) Both takes place in mitochondria
Ans. Option (B) is correct
Q 61 – In which of these organisms the process Z takes place?
(A) Bacteria
(B) Humans
(C) Yeast
(D) Spirogyra
Ans. Option (C) is correct
Q 62 – In which part of human body do the process Z takes place?
(A) In muscle cells
(B) In kidneys
(C) In liver cells
(D) In leydig’s cell
Ans. Option (A) is correct.
Q 63 – Where does aerobic respiration occur in a cell ?
(A) Mitochondria
(B) Cytoplasm
(C) Nucleus
(D) Plastid
Ans. Option (A) is correct
Q 64 – Study the diagram of human respiratory system and answer any of the four questions Q.1. to Q.5.
The balloon like structures present in ‘S’ is:
(A) Nephron
(B) Alveoli
(C) Bronchi
(D) Bronchiole
Ans. Option (B) is correct.
Q 65 – Which of these organ is surrounded by cartilaginous rings?
(A) P
(B) Q
(C) R
(D) S
Ans. Option (C) is correct
Q 66 – Which of these statements is incorrect regarding human lungs?
(A) It is the secondary organ for respiration.
(B) It is located on the two sides of heart.
(C) The membrane that encloses lungs is pleural membrane.
(D) The alveolar epithelium of lungs is non-ciliated epithelium.
Ans. Option (A) is correct
Q 67 – Trachea is divided into two smaller tubes called
(A) Bronchi
(C) Larynx
(C) Bronchioles
(D) Alveoli
Ans. Option (A) is correct
Q 68 – Which of these is the function of balloon like structure present in lungs?
(A) Exchange of gases
(B) Absorption of nutrients
(C) Transport of food
(D) Removal of waste materials
Ans. Option (A) is correct
The given diagram represents the structure of a human excretory system. Study the diagram and answer any of the four questions from Q.1. to Q.5
Q 69 – Identify the part 1 in excretion.
(A) Kidney
(B) Ureter
(C) Urethra
(D) Nephron
Ans. Option (B) is correct
Q 70 – Which of these is the structural and functional unit of part 2?
(A) Alveoli
(B) Nephron
(C) Neuron
(D) None of these
Ans. Option (B) is correct
Q 71 – How can we purify the blood by artificial methods?
(A) Filtration
(B) Dialysis
(C) Reabsorption
(D) All of these
Ans. Option (B) is correct
Q 72 – The main waste present in the urine is:
(A) Glucose
(B) Urea
(C) Blood
(D) Protein
Ans. Option (B) is correct.
Q 73 – Choose the correct path of urine in our body:
(A) kidney —) ureter —) urethra urinary bladder
(B) kidney —) urinary bladder —) urethra —) ureter
(C) kidney —) ureters —) urinary bladder —) urethra
(D) urinary bladder kidney —) ureter —) urethra
Ans. Option (C) is correct.
(iii)Read the given passage and answer the questions :
Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left. The left upper chamber (A) then relaxes. It then contracts and the blood is allowed to enter the next chamber (B), as it expands. When the muscular left lower chamber of heart contracts the blood is pumped out to the body via aorta.
Deoxygenated blood reaches from the body to the upper chamber on the right side of heart (C) and it expands. As this part contracts, the corresponding lower chamber (D) dilates. This transfers the blood to right ventricle, which in turn pumps it to the lungs for oxygenated
Q 74 – Which of these correctly represents the label A, B, C and D in the above passage?
(A) A- Left atrium, B- Left Ventricle, C- Right atrium, D- Right ventricle
(B) A- Right ventricle, B- Left atrium, C- Left Ventricle, D- Right atrium
(C ) A- Right atrium, B- Right ventricle, C- Left atrium, D- Left ventricle
(D) A- Left ventricle, B- Right atrium, C- Right ventricle, D- Left atrium
Ans. Option (A) is correct.
Q 75 – Which chambers of human heart contain oxygenated blood?
(A) A and B
(B) A and C
(C) C arid B
(D) C and D
Ans. Option (A) is correct