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The internal structure of many protists is much more complex than that or cells of multicellular organisms. Does this mean that the protist is engaged in more complex activities than the multicellular organism is? If not, why ire protistan cells more complicated?
To explain:
If or if not the protist organizations are involved in more complex activities than the multicellular organisms and are they more complicated than the other multi-cellular organizations.
Introduction:
Protists are small unicellular eukaryotic organisms, which have organelles like chloroplasts and mitochondria present inside the cells. The other organisms include prokaryotes, which do not have a nucleus and the chromosome is present in the cytoplasm.
Explanation of Solution
Protists have evolved over the other prokaryotic organizations due to differences in modes of nutrition, reproduction, and locomotion. The protists group includes Stramenopiles, Euglenozoans, Apicomplexans, and Amoebas.
Stramenopiles include diatoms, which are heterotrophic organisms with photosynthetic pigments for the preparation of food and metabolites inside the cell.
Euglenozoans are photosynthetic organisms, which prepare their food by trapping the energy from sunlight.
Apicomplexans are heterotrophic parasitic organisms in the human body. Amoebas have pseudopodia for locomotion and absorb food through the process of phagocytosis.
Protists have both the modes of asexual and sexual reproduction, which give them an added advantage over the other multi-cellular organisms.
Yes, these features of differences in nutrition, reproduction and locomotion confirm the evolution of the protists with development of complex activities over the other prokaryotic organisms and multicellular organisms.
The protists have complex features for preparing food due to the presence of chlorophyll. Flagella and pseudopodia for locomotion and presence of organelles like mitochondria, nucleus, and chloroplasts make them more complex than the multicellular organisms.
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Chapter 21 Solutions
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