1. A
   Epidermal cells
2. B
   Stem hair
3. C
   Lenticels
4. D
   Root hair

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1. A
   water in the germinating seeds
2. B
   water in the beaker
3. C
   water used for soaking the seeds
4. D
   air in the flask

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1. A
   To enlarge the material
2. B
   To clean the material
3. C
   To colour the material
4. D
   To prevent the material from drying

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1. A
   Starch
2. B
   Fats
3. C
   Proteins
4. D
   Carbohydrates

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1. A
   Glycolysis
2. B
   Electron transport chain
3. C
   Krebs cycle
4. D
   Oxidation

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1. A
   Chlorophyll absorbs solar energy.
2. B
   Carbon dioxide is oxidized 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
   Mouth → stomach → small intestine → oesophagus → large intestine
2. B
   Mouth → oesophagus → small intestine → large intestine
3. C
   Mouth → oesophagus → stomach → large intestine → small intestine
4. D
   Mouth → oesophagus → stomach → small intestine → large intestine

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

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1. A
   Lipase
2. B
   Amylase
3. C
   Ptyalin
4. D
   Trypsin

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1. A
   Colon
2. B
   Cystic duct
3. C
   Caecum
4. D
   Rectum

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1. A
   Oxygen
2. B
   Heamoglobin
3. C
   Water
4. D
   Carbon dioxide

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1. A
   Carbon dioxide and water are both oxidized
2. B
   Water is reduced and carbon dioxide is oxidized
3. C
   Carbon dioxide and water are both reduced
4. D
   Carbon dioxide is reduced and water is oxidized

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1. A
   endosmosis rate will be same
2. B
   endosmosis rate will be less
3. C
   endosmosis rate will be more
4. D
   endosmosis process will not occur

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

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1. A
   Cellulase
2. B
   Pepsin
3. C
   Trypsin
4. D
   Amylase

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1. A
   respiration
2. B
   excretion
3. C
   nutrition
4. D
   transportation

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1. A
   dialysis
2. B
   filtration
3. C
   transplantation
4. D
   artificial kidney

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1. A
   Amphibians and reptiles
2. B
   Amphibians only
3. C
   Pisces and amphibians
4. D
   Pisces only

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1. A
   lower surface of the leaf
2. B
   tip of the leaf
3. C
   point of attachment of the leaf to its petiole
4. D
   upper surface of the leaf

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1. A
   faster because the amount of dissolved oxygen in water is fairly low.
2. B
   faster because they need more oxygen for their survival.
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 small.

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1. A
   to enhance respiration
2. B
   to release oxygen for respiration
3. C
   to absorb carbon dioxide released by germinating seeds
4. D
   to remove water vapour from the flask

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1. A
   Presence of lime with germinating seeds
2. B
   Absence of KOH
3. C
   Absence of NaOH
4. D
   Presence of KOH in conical flask in the test tube

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1. A
   Dry gram seeds
2. B
   Wet gram seeds
3. C
   Boiled gram seeds
4. D
   Germinating gram seeds

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1. A
   Nasal passage → trachea → pharynx → larynx → alveoli
2. B
   Nostrils → larynx → pharynx → trachea → lungs
3. C
   Nostrils → pharynx → larynx → trachea → alveoli
4. D
   Larynx → nostrils → pharynx → lungs

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1. A
   Minerals
2. B
   Proteins
3. C
   Carbohydrates
4. D
   Fats

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