PROTOZOAN TAXONOMY Zoologists who specialize in the study of protozoa are called proto-zoologists. The protests base diversity of ultrastructure, life cycle, mitochondria, DNA sequence data, life styles and evolutionary lineages.…
SYMBIOTIC LIFESTYLES Many protozoa have symbiotic lifestyles. Symbiosis is an intimate association between two organisms. There are following types of symbiosis in protozoans: 1. Parasitism: An association in which one…
LIFE WITHIN A SINGLE PLASMA MEMBRANE Protozoa have unicellular (cytoplasmic) organization. But they are not simple organisms. Often, they are more complex than any particular cell in higher organisms. Some…
ANIMAL LIKE PROTISTS THE PROTOZOA EVOLUTIONARY PERSPECTIVE: 1. Fossil study of protozoans: The fossil record indicates that all Protists and animal hyla were present during the Cambrian period. Cambrian period…
Multiple Choice Questions MCQs Four options are given at the end of each statement. You should encircle one option from them. 1. Musca domestica is the name of: (a) Insect …
HIGHER ANIMAL TAXONOMY (Out of syllabus) There are following views about animal taxonomy: 1. Monophyletic: Animalia have impressive similarities in animal cellular organization. "lherefore. they are considered as monophyletic. It…
SUBJECTIVE QUESTIONS Write note on taxonomy hierarchy. Write note on nomenclature. What is nomenclature? Why was its need felt? Discuss molecular approach to modern genetics. What is the role of…
OTHER PATTERNS OF ORGANIZATION Many other patterns of organization are present in the animals. These patterns show evolutionary trends. But these trends are not exact sequences in animal evolution. 1.…
PATTERNS OF ORGANIZATION Series of evolutionary changes take place. these can be seen in the body plans in the animal kingdom and the protists. Evolutionary changes do not always mean…
EVOLUTIONARY RELATIONSHIPS AND TREE DIAGRAMS There are following problems in the interpretations of the evolutionary tree diagrams: 1. Stowing relationship above the species: The evolutionary-tree diagrams clarify evolutionary relationships and…
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