Write down the 5 characteristics of fungi, protozoa, virus & algae
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⛄Write down the 5 characteristics of fungi, protozoa, virus & algae...?
✳PROTOZOA...
- It includes eukaryotic unicellular and simple multicellular organisms.
- They are mostly heterotrophic.
- They are mostly plant like, as they lack chlorophyll and cell wall.
- They are mostly fresh water organisms.
- Euglena is an exception which has both plant and animal's characteristics.
Examples - Amoeba, Paraemacium and Euglena
✳FUNGI
- It includes eukaryotic multicellular heterotrophs which are absorptive in their nutritional mode e.g. mushrooms.
- Most fungi are decomposers. They live on organic materials, secrete digestive enzymes and absorb small organic molecules formed by the digestion of enzymes.
- They have peculiar way of digesting food, they release enzyme outside and consume it .
- They have a cell wall made up of chitin.
Examples- Rhizopus, Yeast, Slime moulds
✳ALGAE
- Algae are unicellular, colonial or simple multicellular.
- They resemble plant cells with cell walls and chlorophyll in chloroplasts.
- Simple multicellular means that they do not have multicellular sex organs and do not form embryos during their life cycles.
- They can form lichens, with associations with fungi and higher plants.
Examples- Volvox, Chara, Spirogyra
✳VIRUS
- Viruses are at the borderline of living and nonliving. Due to their crystalline nature, they are considered non-living.
- They are acellular i.e. they do not have cellular organization yet show some characters of living organisms (e.g. they possess DNA).
- Viruses contain either RNA or DNA, normally encased in a protein coat.
- They reproduce only in living cells, where they cause a number of diseases.
- They are not considered as organisms and thus are not included in the five-kingdom classification system.
Examples- Corona virus, HIV virus, Tobacco mosaic.
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