Question

Corallium nobile , is a coral which is mainly used for
A. SCP (single cell protein)
B. Ornamental purpose
C. Production of antibiotics
D. None of the above

Answer 1

Red corals grow on rocky seabed with low sedimentation, usually in dark environments – at depth or in dark caves or crevices. The original species, C. rubrum which is formerly known as Gorgonia nobilis is mainly found in the Mediterranean Sea. It grows at depths between ten to three hundred meters below the sea level, although the shallower areas of these habitats have been largely depleted by mining.

Complete answer:
Option A SCP (Single Cell Protein): Single-celled protein or microbial protein refers to the edible single-celled microorganisms. These are biomass or protein extracts from pure or mixed cultures of algae, yeast, fungi or bacteria that may be used as an ingredient or a substitute for protein rich foods and are suitable for human consumption. Corals are not used in the production of single cell proteins.
Hence option A is not correct.
Option B Ornamental purpose: The hard skeleton of the red coral branches is naturally translucent, but can be polished to give a glassy sheen. Thanks to their deep and permanent shine and color, the precious coral skeletons have been harvested since ancient times for decorative purposes. Since Corallium nobile , which is a coral, is used for ornamental purposes.
So, option B is the correct answer.
Option C Production of antibiotics: Antibiotics are drugs that fight bacterial infections in humans and animals. They work by killing bacteria or making it difficult for bacteria to grow and multiply. Corallium nobile is not used for antibiotic production.
Hence option C is not correct.
Option D None of the above: Since option B is the correct answer.
So, option D is wrong.

Hence, Option B Ornamental purpose is the correct answer.

Note:
Corals are marine invertebrates of the anthozoa class of the family Cnidaria. They often form small colonies of many identical individual polyps. Coral species include important reef builders that live in tropical oceans and secrete calcium carbonate to form a hard skeleton. Colony of myriad genetically identical polyps is known as a coral “group”.