15. What is trinomial nomenclature?
16. What is meant by loose connective tissues and its types?
17. What are the ill effects of adulteration of food?
18. Give notes on platelets.
19. What is meant by muscular dystrophy?
20. Why thymus is considered as a lymphoid organ?
Answers
Answer:
15In biology, trinomial nomenclature is used to name living things at a rank lower than species. The term trinomial nomenclature means "three-part name" or "system of three-part names".
16.Connective tissue is one of the four basic types of animal tissue, Loose connective tissue is named so because of the "weave" and type of its constituent fibers. These fibers form an irregular network with spaces between the fibers. The spaces are filled with ground substance. The three main types of loose connective fibers include collagenous, elastic, and reticular fibers.
17.Non-permitted colour or permitted food colour like metanil yellow, beyond the safe limit in coloured food can cause allergies, hyperactivity, liver damage, infertility, anaemia, cancer and birth defects.
18.Platelets have no cell nucleus: they are fragments of cytoplasm that are derived from the megakaryocytes of the bone marrow, which then enter the circulation.
19.A serious medical condition in which somebody’s muscles gradually become weaker from the time they are born.
20.The thymus is a specialized primary lymphoid organ of the immune system. Within the thymus, T cells mature.
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