The part of the plant embryo that develops into the root is the:
A. Plumule
B. Hypocotyl
C. Radicle
D. Epicotyl
Answer: Option C
Solution (By JKSSB Mock Tests)
The radicle is the embryonic root, emerging first during germination, and develops into the primary root system. The plumule develops into the shoot, hypocotyl is below cotyledons, epicotyl above cotyledons. The radicle grows downward (positively geotropic) to anchor and absorb water.
Explanation:
The vocal cords (folds) in the larynx vibrate as air passes, producing sound. Pitch is controlled by tension. Epiglottis prevents food entry, trachea is airway.
Explanation:
Ammonia (NH₃) is highly toxic and requires large volumes of water for its excretion; hence it is produced by aquatic animals. Urea is less toxic, uric acid least toxic and water-insoluble. Creatinine is a minor waste. Ammonia is converted to urea in the liver via the urea cycle in ureotelic organisms.
Explanation:
Bile juice is continuously secreted by the liver. It is stored and concentrated in the gall bladder and released into the duodenum (first part of the small intestine) when food enters. Bile contains bile salts (like bilirubin and biliverdin) which are crucial for the emulsification of fats, breaking them into smaller micelles for easier digestion by lipases.
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