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Biological Classification
What are the characteristic features of Euglenoids?
Euglenoids have the following characteristics:
i. They are unicellular protists commonly found in fresh water.
ii. Instead of cell wall, a protein-rich cell membrane known as pellicle is present.
iii They bear two flagella on the anterior end of the body.
iv. A small light sensitive eye spot is present.
v. They contain photosynthetic pigments such as chlorophyll and can thus prepare their own food. However, in absence of light, they behave similar to heterotrophs by capturing other small aquatic organisms.
vi. They have both plant and animal-like features, which makes them difficult to classify.
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What is the nature of cell-walls in diatoms?
Find out what do the terms ‘algal bloom’ and ‘red-tides’ signify.
How are viroids different from viruses?
Describe briefly the four major groups of Protozoa.
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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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