Carotenoid contains:
Correct answer: D. Both (A) and (B)
- A. Carotenes
- B. Xanthophylls
- C. Chlorophyll - C
- D. Both (A) and (B)
Explanation
The carotenoids are divided into two main classes: carotenes and xanthophylls. Carotenes are pure hydrocarbons, meaning they consist only of carbon and hydrogen. Xanthophylls are similar to carotenes but have one or more oxygen atoms in their structure. Although both are types of carotenoids, chlorophylls, such as chlorophyll - C, are not related to carotenoids but are rather a different group of pigments involved in photosynthesis. Therefore, the correct answer is that carotenoids contain both carotenes and xanthophylls.
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About Plant Nutrition and Transport
Plants require macronutrients and micronutrients for growth, and mineral deficiencies produce recognizable symptoms. Transport involves water and minerals through xylem by transpiration pull, cohesion and adhesion, while phloem translocates sugars from sources to sinks. Root pressure and transpiration are distinct mechanisms.
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