Life Processes

1. A.
   By eating the bread on which it is growing.
2. B.
   By using nutrients from the bread to prepare their own food.
3. C.
   By breaking down the nutrients of bread outside the body and then absorbing them.
4. D.
   By allowing other organisms to grow on the bread and then consuming them.

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1. A.
   Xylem
2. B.
   Stomata
3. C.
   Phloem
4. D.
   Cuticle

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1. A.
   Stomata
2. B.
   Epidermal cells
3. C.
   Guard cells
4. D.
   Chloroplasts

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1. A.
   (i) and (ii)
2. B.
   (i) and (iii)
3. C.
   (ii) and (iii)
4. D.
   (i) only

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1. A.
   Both plants are kept in the dark room for three days before placing them in separate glass jars.
2. B.
   Both plants are covered with separate wooden bell-jars.
3. C.
   Use vaseline to seal the bottom of the jars with the glass plates.
4. D.
   Both potted plants were kept in sunlight for a few hours before the iodine test for the presence of starch.

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1. A.
   Glucose $\rightarrow$ Pyruvate $\xrightarrow[\text{of } \mathrm{O_2}]{\text{Absence}}$ Ethanol + $\mathrm{CO_2}$ + Energy
2. B.
   Glucose $\xrightarrow{\mathrm{O_2}}$ Pyruvate $\xrightarrow{\mathrm{O_2}}$ Energy
3. C.
   Glucose $\xrightarrow{\mathrm{O_2}}$ Pyruvate $\xrightarrow[\text{oxygen}]{\text{Lack of}}$ Ethanol + Energy
4. D.
   Glucose $\rightarrow$ Pyruvate $\xrightarrow[\text{oxygen}]{\text{Lack of}}$ Lactic acid + Energy

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1. A.
   The guard cells have shrunk.
2. B.
   The water comes out of the guard cells.
3. C.
   Large amount of water is lost through stomata.
4. D.
   The guard cells have swelled due to inflow of water.

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1. A.
   Fishes
2. B.
   Amphibians
3. C.
   Reptiles
4. D.
   Mammals

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1. A.
   Starch
2. B.
   Sugar
3. C.
   Fat
4. D.
   Protein

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1. A.
   Minerals from leaves to other parts of the plant.
2. B.
   Plant growth hormones from leaves to other parts of the plant.
3. C.
   Water and inorganic substances from leaves to other parts of the plant.
4. D.
   Organic substances from leaves to the other parts of the plant.

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1. A.
   Trypsin digests emulsified fats and lipase digests proteins.
2. B.
   Trypsin digests proteins and lipase digests emulsified fats.
3. C.
   Trypsin and lipase both digests fats.
4. D.
   Trypsin digests proteins and lipase digests carbohydrates.

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1. A.
   $\mathrm{CO_2 + O_2 + H_2O \xrightarrow{\text{Chlorophyll}} C_6H_{12}O_6 + H_2O}$
2. B.
   $\mathrm{6CO_2 + 6H_2O \xrightarrow[\text{Sunlight}]{\text{Chlorophyll}} C_6H_{12}O_6 + O_2}$
3. C.
   $\mathrm{CO_2 + H_2O \xrightarrow{\text{Sunlight}} C_6H_{12}O_6}$
4. D.
   $\mathrm{6CO_2 + 12H_2O \xrightarrow[\text{Sunlight}]{\text{Chlorophyll}} C_6H_{12}O_6 + 6O_2 + 6H_2O}$

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1. A.
   (i) and (ii)
2. B.
   (ii) and (iii)
3. C.
   (iii) and (iv)
4. D.
   (i) and (iv)

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1. A.
   (i) and (ii)
2. B.
   (ii) and (iii)
3. C.
   (ii), (iii) and (iv)
4. D.
   (i), (ii) and (iii)

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1. A.
   Entry of water into guard cells
2. B.
   Exit of water from guard cells
3. C.
   Entry of air into the stomatal pore
4. D.
   Entry of water into the stomatal pore

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1. A.
   contraction of right atrium
2. B.
   relaxation of left ventricle
3. C.
   contraction of right ventricle
4. D.
   contraction of left ventricle

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1. A.
   Excess water is given out by transpiration.
2. B.
   Gums and Resins are wastes that are stored.
3. C.
   Roots secrete some wastes into the soil.
4. D.
   Flowers can store some waste products.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both, Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both, Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Phosphorus
2. B.
   Nitrogen
3. C.
   Iron
4. D.
   Magnesium

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1. A.
   Right atrium receives deoxygenated blood from different parts of the body and sends it to pulmonary veins.
2. B.
   Left atrium sends oxygenated blood to right ventricle which pumps it to different parts of the body.
3. C.
   Right atrium receives deoxygenated blood from the body and sends it to the right ventricle.
4. D.
   Left atrium receives oxygenated blood from the pulmonary arteries and sends it to the left ventricle.

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1. A.
   $\mathrm{CO_2}$ concentration in stomata
2. B.
   Temperature in guard cells
3. C.
   $\mathrm{O_2}$ concentration in stomata
4. D.
   Amount of water in guard cells

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1. A.
   A and B
2. B.
   B and D
3. C.
   A and C
4. D.
   C and D

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1. A.
   Nitrogen
2. B.
   Phosphorus
3. C.
   Iron
4. D.
   Magnesium

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1. A.
   Alveoli
2. B.
   Capillaries
3. C.
   Arteries
4. D.
   Veins

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1. A.
   (iv), (i), (ii), (iii), (v)
2. B.
   (iii), (ii), (iv), (i), (v)
3. C.
   (ii), (i), (iv), (v), (iii)
4. D.
   (iii), (iv), (i), (ii), (v)

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1. A.
   proteins into amino acids
2. B.
   fats into fatty acids and glycerol
3. C.
   starch into simple sugars
4. D.
   sugars into alcohol

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1. A.
   Mucus and Trypsin
2. B.
   Pepsin and Trypsin
3. C.
   Mucus and Pepsin
4. D.
   Pepsin and Salivary amylase

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1. A.
   Paramoecium
2. B.
   Amoeba
3. C.
   Leishmania
4. D.
   Rhizopus

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1. A.
   Bryophyllum
2. B.
   Hibiscus
3. C.
   Cuscuta
4. D.
   Helianthus

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1. A.
   $\mathrm{CO_2}$
2. B.
   Starch
3. C.
   Resins and gums
4. D.
   Dead cells

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1. A.
   Nephron
2. B.
   Urethra
3. C.
   Neuron
4. D.
   Urinary bladder

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1. A.
   Vacuole and Cytoplasm
2. B.
   Chloroplast and Mitochondria
3. C.
   Mitochondria and Cytoplasm
4. D.
   Cytoplasm and Mitochondria

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1. A.
   Mitochondria and Oxygen deficient muscle cells
2. B.
   Cytoplasm and Oxygen rich muscle cells
3. C.
   Cytoplasm and Yeast cells
4. D.
   Cytoplasm and Oxygen deficient muscle cells

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1. A.
   Bile, Trypsin, Pepsin
2. B.
   Hydrochloric acid, Pepsin, Mucus
3. C.
   Lipase, Bile, Mucus
4. D.
   Salivary amylase, Pepsin, Bile

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1. A.
   Both, Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both, Assertion (A) and Reason (R) are true, and Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Transpiration
2. B.
   Evaporation
3. C.
   Conduction
4. D.
   Translocation

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1. A.
   (i) Amino acids, (ii) glucose and (iii) fatty acids
2. B.
   (i) Amino acids, (ii) glucose, (iii) fatty acids and glycerol
3. C.
   (i) Glucose, (ii) fatty acids and glycerol, (iii) amino acids
4. D.
   (i) Sugars, (ii) amino acids, (iii) fatty acids and glycerol

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1. A.
   (a)
2. B.
   (a) and (d)
3. C.
   (b) and (c)
4. D.
   (b) and (d)

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1. A.
   lifted ribs and curve/dome shaped diaphragm.
2. B.
   lifted ribs and flattened diaphragm.
3. C.
   relaxed ribs and flattened diaphragm.
4. D.
   relaxed ribs and curve/dome shaped diaphragm.

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1. A.
   (i) only
2. B.
   (i) and (iii)
3. C.
   (ii) and (iii)
4. D.
   (ii) and (iv)

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1. A.
   (b) only
2. B.
   (a) and (d)
3. C.
   (b) and (c)
4. D.
   (b) and (d)

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Column I (Enzymes): Pepsin; Column II (Component): Starch
2. B.
   Column I (Enzymes): Trypsin; Column II (Component): Proteins
3. C.
   Column I (Enzymes): Lipase; Column II (Component): Proteins
4. D.
   Column I (Enzymes): Amylase; Column II (Component): Emulsified fat

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1. A.
   nucleus, chloroplast, guard cell, vacuole
2. B.
   nucleus, chloroplast,, vacuole, guard cell
3. C.
   chloroplast, nucleus, vacuole, guard cell
4. D.
   vacuole, guard cell, nucleus, chloroplast

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1. A.
   transpiration and photosynthesis.
2. B.
   transpiration and temperature regulation.
3. C.
   translocation and movement of soluble products of photosynthesis in phloem.
4. D.
   translocation and absorption of water and minerals from soil by roots.

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1. A.
   Stomach and small intestine
2. B.
   Stomach and anus
3. C.
   Small intestine and large intestine
4. D.
   Oesophagus and stomach

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1. A.
   Evaporation : maintains water contents in leaf cells.
2. B.
   Transpiration : creates a suction force which pulls water inside the plant.
3. C.
   Excretion : helps in excreting out waste water from the plant.
4. D.
   Translocation : helps in transporting materials from one cell to another.

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1. A.
   a plant parasite, Cuscuta
2. B.
   an animal parasite, Tapeworm
3. C.
   a bacteria, Rhizobium
4. D.
   a fungi, Rhizopus

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1. A.
   The length of the small intestine in animals differs as it depends on the type of food they eat.
2. B.
   The small intestine is the site of complete digestion of food.
3. C.
   The small intestine receives secretions from liver and pancreas.
4. D.
   The villi of the small intestine absorb water from the unabsorbed food before it gets removed from the body via the anus.

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1. A.
   I
2. B.
   IV
3. C.
   III
4. D.
   II

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1. A.
   High pressure of gases inside the cells.
2. B.
   Movement of water in and out of the guard cells.
3. C.
   Stimulus of light in the guard cells.
4. D.
   Diffusion of $\mathrm{CO_2}$ in and out of the guard cells.

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1. A.
   the function of the root to absorb water.
2. B.
   difference in the concentration of ions between the root and the soil.
3. C.
   excess water present in the soil.
4. D.
   diffusion of water in the roots.

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1. A.
   faster because they need more oxygen for their survival.
2. B.
   faster because the amount of dissolved oxygen in water is fairly low.
3. C.
   slower because the amount of dissolved oxygen in water is fairly low.
4. D.
   slower because the capacity of water of dissolving atmospheric air is limited.

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1. A.
   Glucose
2. B.
   Ethanol
3. C.
   Lactic acid
4. D.
   Lactose

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1. A.
   Chlorophyll absorbs solar energy.
2. B.
   Carbon dioxide is released during the process.
3. C.
   Oxygen is released during the process.
4. D.
   Carbon dioxide is absorbed during the process.

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1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. C.
   (A) is true but (R) is false.
4. D.
   (A) is false but (R) is true.

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1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A).
2. B.
   Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

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