PHYSIOLOGY
SYNAPTIC PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is multinuclear
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It has one nucleus
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It does not divide into separate cells
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It lacks a cell wall
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Detailed explanation-1: -Acetabularia is a whole organism and it is larger than a cell. This disturbs the cell theory because it seems to break the rule that all organisms are made of cells by not itself being made of cells.
Detailed explanation-2: -Giant algae: these organisms are able to grow up to 100 mm in length yet they are unicellular and contain only one nucleus. Due to their size one would expect them to be composed of many cells.
Detailed explanation-3: -Some fungi are not partitioned by septa and hence have a continuous cytoplasm along the length of the hyphae. Challenges the idea that living structures are composed of discrete cells.
Detailed explanation-4: -The virus does not possess basic cellular organization as bacteria, algae and fungi. Therefore, cell theory is not applicable. Virus does not categorize or does not occur to the cell theory. Hence, the correct answer is option (C).
Detailed explanation-5: -Presence of extra-chromosomal DNA: Mitochondria and chloroplasts are exceptions as they have their own genetic material and can reproduce independently.