X Chemistry - Carbon and Its Compounds for CBSE

AnonymousNovember 20, 2012 at 3:59 AM
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Trend Setter Questions with Solutions : Diversity in Living Organisms more than 150 solved Questions One Mark Questions: 1) What is biological classification ? Ans: Grouping of organisms based on similarities & dissimilarities is called biological classification. 2) What is Taxonomy ? Ans: The systematic study of identification classification and naming of oraganisms is called taxonomy. 3) Who made 1st attempt for scientific basis of classification ? Ans : Aristotle. 4) On what morphological criteria Aristotle classified the plants ? Ans : Based on the morphological nature of the stem. 5) Based on the nature of the steam name the types of plants classified by Aristotle. Ans: Herbs, Shrubs & Trees. 6) Name the 2 kingdoms of classification ? Ans: (1) Plantae & Metaphyta (2) Animatia Metazoa 7) What are prokaryotas ? Ans: The organisms which do not have well organized nucleus in their cell are called prokaryotes. OR Organisms co...

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Q Name the cells having branches structure. Ans Nerve Cell. Q Why cells could not be observed before seventeenth century? Ans Cells could not be observed before seventeenth century because till that time microscope was not invented. Q Why plant cell have cell wall? Ans Plant cells need protection against variations in temperature, high wind speed, atmospheric moisture, etc. They are exposed to these variations because they cannot move. That's why they have cell wall. Q Which organism has the smallest cell? Ans Mycoplasmas, a bacteria has the smallest cell of the size of 0.1 micron i.e. ten thousandth part of a mill metre. ' Q Which is the largest cell visible by unaided eye? Ans Ostrich egg has the largest visible cell by unaided eye. Q Name the four elements, which fonn major part of protoplasm. Ans These are carbon, hydrogen, oxygen and nitrogen. Q Give two examples of prokaryotes. Ans Bacteria and blue green algae. Q Name the la...

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