In chlorophyII-b, the porphyrine ring is attached to the:
Correct answer: C. Aldehyde group
- A. Methyl group
- B. Carboxyl group
- C. Aldehyde group
- D. Hydroxyl group
Explanation
The porphyrin ring in chlorophyll-b is specifically attached to an aldehyde group, which includes a carbonyl group (C=O) bonded to a hydrogen atom. This distinguishes it from chlorophyll-a, where the attachment is a methyl group. Methyl groups (CH3) are simple carbon groups not present in chlorophyll-b's structure. Carboxyl groups (COOH) and hydroxyl groups (OH) are not involved in the attachment of the porphyrin ring in chlorophyll-b.
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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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