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Biological Classification — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBiological Classification3 Marks
Question
Write short notes on:
  1. Kingdom Plantae.
  2. Kingdom Animalia.
  3. Bacteria.
  4. Lichens.
✓

Answer

  1. Kingdom Plantae: All green plants are taken under this kingdom. Majority of members are autotrophic. Exceptions are certain parasitic plants, like Venus fly trap. Plants show alternation of generation. Reproduction is vegetative, asexual and sexual.
  2. Kingdom Animalia: Animals are mobile. They show holozoic nutrition, i.e., they ingest their food and break complex food substance into simpler compounds. Animals can be unicellular and multicellular. Reproduction is asexual and sexual.
  3. Bacteria: Bacteria are unicellular. Among bacteria there are certain species which are believed to be on earth since life began on earth. Bacteria can be beneficial and harmful to humans. Nutrition is heterotrophic and autotrophic.
  4. Lichens: Lichens are a very good example of symbiosis. Lichens are combination of algae and fungi. The algal part provides food and base to the fungal part, while the fungal part provides gases to the algal part. They are supposed to be very good tool to identify level of pollution in a given ecosystem.

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