NCERT Solutions For Class 11 Biology Transport in Plants NCRT TEXTBOOK QUESTIONS SOLVED 1.What are the factors affecting the rate of diffusion? Solution. Factors affecting the rate of diffusion are : Density – Rate of diffusion of a substance is inversely proportional to square root of its relative density (Graham’s Law). Permeability of medium –…
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NCERT Solutions For Class 11 Biology Cell Cycle and Cell Division NCRT TEXTBOOK QUESTIONS SOLVED 1. What is the average cell cycle span for a mammalian cell? Solution: 24 hours. 2. Distinguish cytokinesis from karyokinesis. Solution: Differences between cytokinesis and karyokinesis are: 3. Describe the events taking place during the interphase. Solution:…
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NCERT Solutions For Class 11 Biology Biomolecules NCRT TEXTBOOK QUESTIONS SOLVED 1. What are macromolecules? Give examples. Solution: Macromolecules are large high molecular weight substances with complex molecular structure and occur in colloidal state (being insoluble) in intracellular fluid. These are formed by polymerization of large number of micromolecules. Polysaccharides, proteins and nucleic acids…
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NCERT Solutions For Class 11 Biology Cell The Unit of Life NCRT TEXTBOOK QUESTIONS SOLVED 1.Which of the following is not correct? (a) Robert Brown discovered the cell. (b) Schleiden and Schwann formulated the cell theory. (c) Virchow explained that cells are formed from pre-existing cells. (d) A unicellular organism carries out its life…
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NCERT Solutions For Class 11 Biology Structural Organisation in Animals NCRT TEXTBOOK QUESTIONS SOLVED 1. Answer in one word or one line. (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in earthworm? (iii) What is the position of ovaries in cockroach? (iv) How many segments are present in the…
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NCERT Solutions For Class 11 Biology Anatomy of Flowering Plants NCRT TEXTBOOK QUESTIONS SOLVED 1.State the location and function of different types of meristems. Soln. Meristems are of three types on the basis of their location in plant body: (i) Apical meristem: It is present at the apices of root and shoot and is responsible…
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NCERT Solutions For Class 11 Biology Morphology of Flowering Plants NCRT TEXTBOOK QUESTIONS SOLVED 1.What is meant by modification of root? What type of modification of root is found in the: (a) Banyan tree (b) Turnip (c) Mangrove trees Soln.Roots of some plants change their shape and structure and become modified to perform certain functions…
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NCERT Solutions For Class 11 Biology Animal Kingdom NCRT TEXTBOOK QUESTIONS SOLVED 1.What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account? soln. The common fundamental features used for classifying animals include body symmetry, arrangement of cells, nature of coelom, level of organisation.…
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NCERT Solutions For Class 11 Biology Plant Kingdom NCERT TEXTBOOK QUESTIONS SOLVED 1.What is the basis of classification of algae? soln. Fritsch (1935), has classified algae considering phylogeny, affinities and inter-relationships of various forms. He classified algae mainly on the basis of the characters like structure of plant body, nature of the pigments, reserve…
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NCERT Solutions For Class 11 Biology Biological Classification NCRT TEXT BOOK QUESTIONS SOLVED 1.Discuss how classification systems have undergone several changes over a period of time? Soln. Biological classification is the scientific procedure of arranging organisms in a hierarchical series of groups and sub-groups on the basis of their similarities and dissimilarities. Scientists have…
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