advantages and disadvantages of regeneration reproduction
Answers
Explanation:
Advantages of Reproduction Asexual
• Good qualities from parents are retained in the offspring without variation.
• New individuals produced asexually mature faster.
• Process does not depend on external factors which may fail such as pollination.
• New individuals obtain nourishment from parent and so are able to survive temporarily under unsuitable conditions.
• No indiscriminate spreading of individuals which can result in wastage of offspring.
• Takes a shorter time and leads to rapid colonization.
Disadvantages of asexual reproduction
• New offspring may carry undesirable qualities from parents.
• Offspring may be unable to withstand changing environmental conditions.
• Faster maturity can cause overcrowding and stiff competition.
• Reduced strength and vigour of successive generations.
Advantages of sexual reproduction
• Leads to variations.
• Variations which are desirable often show hybrid vigour.
• High adaptability of individuals to changing environmental conditions.
• Variations provide a basis for evolutionary changes.
Disadvantages of sexual reproduction
• Fusion is difficult if two individuals are isolated.
• Some variations may have undesirable qualities.
• Population growth is slow.
Regeneration, in biology, the process by which some organisms replace or restore lost or amputated body parts.
Organisms differ markedly in their ability to regenerate parts. Some grow a new structure on the stump of the old one. By such regeneration whole organisms may dramatically replace substantial portions of themselves when they have been cut in two, or may grow organs or appendages that have been lost. Not all living things regenerate parts in this manner, however. The stump of an amputated structure may simply heal over without replacement. This wound healing is itself a kind of regeneration at the tissue level of organization: a cut surface heals over, a bone fracture knits, and cells replace themselves as the need arises.
Regeneration, as one aspect of the general process of growth, is a primary attribute of all living systems. Without it there could be no life, for the very maintenance of an organism depends upon the incessant turnover by which all tissues and organs constantly renew themselves. In some cases rather substantial quantities of tissues are replaced from time to time, as in the successive production of follicles in the ovary or the molting and replacement of hairs and feathers. More commonly, the turnover is expressed at the cellular level. In mammalian skin the epidermal cells produced in the basal layer may take several weeks to reach the outer surface and be sloughed off. In the lining of the intestines, the life span of an individual epithelial cell may be only a few days.