1. A
   water vapours
2. B
   nitrogen
3. C
   oxygen
4. D
   carbon dioxide

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1. A
   Methanol
2. B
   Formic acid
3. C
   Citric acid
4. D
   Ethanol

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1. A
   nuclei only
2. B
   all parts in the peel
3. C
   cell membrane and cytoplasm
4. D
   stomata only

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

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1. A
   Duck
2. B
   Frog
3. C
   Whale
4. D
   Tadpole

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1. A
   Formation of ATP
2. B
   Excitation of electron of chlorophyll
3. C
   Ionization of water
4. D
   Attachment of CO₂ to 5-carbon sugar

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

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1. A
   Epiglottis
2. B
   Pineal gland
3. C
   Thymus gland
4. D
   Vermiform appendix

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1. A
   sunlight
2. B
   All of these
3. C
   carbon dioxide and water
4. D
   chlorophyll

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1. A
   protein
2. B
   glucose
3. C
   starch
4. D
   sugar

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1. A
   Simpleproteins
2. B
   Fats
3. C
   Starch
4. D
   Complex proteins

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1. A
   Pair of tong
2. B
   Forceps
3. C
   Brush
4. D
   Needle

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1. A
   Heat
2. B
   Ethanol
3. C
   Carbon dioxide
4. D
   Lactic acid

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1. A
   Water
2. B
   KOH
3. C
   Iodine
4. D
   Alcohol

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1. A
   Water level rises in the delivery tube.
2. B
   Water turns milky and rises in the delivery tube.
3. C
   Water turns milky but does not rise in the delivery tube.
4. D
   Water level in the delivery tube remains unchanged.

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

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1. A
   Dissolve starch
2. B
   Make it react with iodine
3. C
   Dissolve chlorophyll
4. D
   Soften the leaf

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1. A
   Glucose → (cytoplasm) pyruvate → (mitochondria) CO₂ + H₂O + Energy
2. B
   Glucose → (mitochondria) pyruvate → (cytoplasm) CO₂ + H₂O + Energy
3. C
   Glucose → (cytoplasm) pyruvate + Energy → (mitochondria) CO₂ + H₂O + Energy
4. D
   Glucose → (cytoplasm) pyruvate → (mitochondria) CO₂ + H₂O

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1. A
   Either vaseline or wax
2. B
   Wax
3. C
   Vaseline
4. D
   Lubricant oil

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1. A
   6CO₂ + 12H₂O + Chlorophyll + Sunlight → C₆H₁₂O₆ + 6O₂ + 6H₂O
2. B
   6CO₂ + 12H₂O + Chlorophyll + Sunlight → C₆H₁₂O₆ + 6CO₂ + 6H₂O
3. C
   6CO₂ + 12H₂O → C₆H₁₂O₆ + 6O₂ + 6H₂O
4. D
   6CO₂ + 12H₂O + Sunlight → C₆H₁₂O₆ + 6O₂ + 6H₂O

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

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1. A
   boiled to make them soft
2. B
   kept moist till they germinate
3. C
   soaked in vinegar
4. D
   dried completely

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1. A
   Parasitic
2. B
   Holozoic
3. C
   Saprotrophic
4. D
   Autotrophic

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1. A
   Golgi body
2. B
   Mitochondria
3. C
   Chloroplast
4. D
   Cytoplasm

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1. A
   Dilute glycerine
2. B
   70% alcohol
3. C
   Nail polish
4. D
   Canada Balsam

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