CBSE Questions for Class 12 Medical Biology Strategies For Enhancement In Food Production Quiz 3 - MCQExams.com

• Tissue culture, a method of biological research in which fragments of tissue from an animal or plant are transferred to an artificial environment in which they can continue to survive and function. 
• The cultured tissue may consist of a single cell, a population of cells, or a whole or part of an organ. 
• Tissue culture is used to create large amounts of plants or growing material in a sterile environment with the required water and nutrients to suit the plant species and a gelling agent such as agar. 
• One major breakthrough made possible by tissue culture is the development of disease-free bananas in East Africa. 

• Cross breeding is the breeding of closely or distantly related individuals to produce new crop varieties or lines with desirable properties. 
• Inbreeding is the mating of organisms closely related by ancestry.
• Outbreeding refers to matings between individuals from different populations, subspecies, or species. 
• Mating of animals within the same breed, but having no common ancestors on either side of their pedigree up to 4-6 generations is called outcrossing. The resulting offsprings are called outcross.
• Interspecific hybridization is the crossing of two species from the same genus. This allows the exploitation of useful genes from wild, unimproved species for the benefit of the cultivated species.

• The dried cells of microorganisms such as bacteria, fungi, yeasts and algae that are grown in large-scale culture systems as proteins for human or animal consumption are collectively known as single-cell protein. 
• SCP made for human consumption as a balanced diet by CFTRI, Mysore is a dried mass of Spirulina.
  
• Spirulina is considered the best source. The composition of the biomass, including the high protein content, low content in nucleic acids, the occurrence of high concentrations of vitamins and other growth factors, and the presence of cell wall that is more easily digestible than that of other microbes indicate that Spirulina is a promising source of food or feed.

Inbreeding is the production of offspring from the mating or breeding of individuals or organisms that are closely related genetically, in contrast to outcrossing, which refers to mating unrelated individuals. 

Thus, the correct answer is (B).

• Totipotency is the ability of a single cell to divide and produce all of the differentiated cells in an organism. 
• Differentiation is the process by which a cell changes from one cell type to another. Most commonly this is a less specialized type becoming a more specialized type, such as during cell growth.
• Homeostasis is the property of maintaining the same conditions within the human body. The human body manages a multitude of highly complex interactions to maintain balance or return systems to functioning within a normal range.
• Dedifferentiation is an important biological phenomenon, whereby cells regress from a specialized function to a simpler state reminiscent of stem cells.

• Aeration of the culture
• Constant Mixing
• Breakage of cell aggregates in small particles

Taraporewala Aquarium, situated in the city of Mumbai, India. It is the country's oldest and one of the city's main attractions. it hosts marine and freshwater fishes. The aquarium is located on the famous Marine Drive. Hence option D is correct.