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Diversity In Living Organisms
What are the characteristics of:
(i) Subkingdom cryptogamae and (ii) Subkingdom phanerogamae?
(i) Cryptogamae. These are also known as lower plants / flowerless or seedless plants. These plants have hidden reproductive organs. They do not bear external flowers or seeds.
(ii) Phanerogamae. These bear seeds. Sex organs are multicellular and embryo develops from a fertilized egg. Plant body is differentiated into stem, leaves and roots. Vascular system (xylem and phloem) is well developed.
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What are the major divisions in the plantae? What is the basis for these divisions?
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
Explain how animals in vertebrata are classified into further subgroups.
Name the biggest animal and the tallest tree.
What is classification?
Name the branch of science which deals with classification.
Why do we classify organisms?
Give three examples of the range of variations that you see in life form around you.
What was the basis of animal classification done by Aristotle.
Why a method of classification of animals proposed by Aristotle was not accepted ? Explain with example.
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