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Biological Classification
Organise a discussion in your class on the topic- Are viruses living or non-living?
Viruses are microscopic organisms that have characteristics of both living and non-living. A virus consists of a strand of DNA or RNA covered by a protein coat. The presence of nucleic acid (DNA or RNA) suggests that viruses are alive. In addition, they can also respond to their environment (inside the host cell) in a limited manner. However, some other characters, such as their inability to reproduce without using the host cell machinery and their acellular nature, indicate that viruses are non-living. Therefore, classifying viruses has remained a mystery.
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How are viroids different from viruses?
Describe briefly the four major groups of Protozoa.
Plants are autotrophic. Can you think of some plants that are partially heterotrophic?
What do you the terms phycobiont and mycobiont signify?
Give a comparative account of the classes of Kingdom Fungi under the following:(i) Mode of nutrition (ii) Mode of reproduction.
What are the characteristic features of Euglenoids?
Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.
Organise a discussion in your class on the topic- Are viruses living or non-living?
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