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Posted by Anonymous on December 23, 2016

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Class 11th BIOLOGY Solution Chapter 3

NCERT Solutions for Class 12th Maths Chapter 3 PLANT KINGDOM Question 1: What is the basis of classification of algae? Answer Algae are classified into three main classes – Chlorophyceae, Phaeophyceae, and Rhodophyceae. These divisions are based on the following factors: (a) Major photosynthetic pigments present (b) Form of stored food (c) Cell wall composition (d) Number of flagella and position of insertion Class I – Chlorophyceae Common name – Green algae Major pigments – Chlorophylls a and b Stored food – Starch Cell wall composition – Cellulose Flagella number and position – 28; equal and apical Class II – Phaeophyceae Common name– Brown algae Major pigments – Chlorophylls a and c, and fucoxanthin Stored food – Mannitol and laminarin Cell wall composition – Cellulose and algin Flagella number and position – 2; unequal and lateral Class III – Rhodophyceae Common name – Red algae Major pigments – Chlorophylls a and b, and phycoery...

Class 12 BIOLOGY NCERT Solution CHAPTER 1

NCERT Solutions for Class 12th Chemistry Chapter 1 Reproduction in Organisms Question 1: Why is reproduction essential for organisms? Answer 1: Reproduction is a fundamental feature of all living organisms. It is a biological process through which living organisms produce offspring’s similar to them. Reproduction ensures the continuance of various species on the Earth. In the absence of reproduction, the species will not be able to exist for a long time and may soon get extinct. Question 2: Which is a better mode of reproduction sexual or asexual? Why? Answer 2: Sexual reproduction is a better mode of reproduction. It allows the formation of new variants by the combination of the DNA from two different individuals, typically one of each sex. It involves the fusion of the male and the female gamete to produce variants, which are not identical to their parents and to themselves. This variation allo...

Class 11th Biology Solution Chapter 4

NCERT Solutions for Class 11th Biology Chapter 4 ANIMAL KINGDOM DOWNLOAD OUR APP Question 1: What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account? Answer For the classification of living organisms, common fundamental characteristics are considered. If we consider specific characteristics, then each organism will be placed in a separate group and the entire objective of classification would not be achieved. Classification of animals is also important in comparing different organisms and judging their individual evolutionary significance. If only a single characteristic is considered, then this objective would not be achieved. DOWNLOAD OUR APP 2.If you are given a specimen, what are the steps that you would follow to classify it? soln. Various steps considered to classify a specimen are: (i)Mode of nutrition – It can be autotrophic, holozoic, saprophytic or parasitic....

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