Practice Pakistan questions with answers and explanations.
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The gallbladder stores and concentrates bile made by the liver.
It releases bile into the small intestine.
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Salivary amylase starts breaking starch into smaller sugars.
Its action continues briefly after swallowing.
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Pepsin works in the acidic stomach environment.
It breaks proteins into smaller peptides.
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Lipase hydrolyzes fats into fatty acids and glycerol.
It acts mainly in the small intestine.
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Splitting water during photosynthesis releases oxygen.
The gas diffuses out through stomata.
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Platelets gather at damaged vessels and activate clotting.
This limits blood loss.
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Chlorophyll absorbs mainly blue and red light.
Its green color results from reflected green wavelengths.
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Plasma carries cells, nutrients, hormones, wastes, and proteins.
It is mostly water.
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Most transpiration occurs through leaf stomata.
It helps pull water upward through xylem.
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The anther is part of the stamen.
It contains pollen-producing structures.
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The stigma is typically sticky or adapted to catch pollen.
It is part of the female reproductive structure.
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Pollination occurs before fertilization in flowering plants.
It may be carried out by wind, insects, or other agents.
