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Chapter – 9 Biomolecules Q1. What are monosaccharides? Give examples. Answer Monosaccharides are the simplest carbohydrates molecules that cannot be hydrolysed into smaller carbohydrates molecules. The general formula of carbohydrates is Cn H2n OH; their examples are Ribose, Glucose and Fructose. Q 2. What is a disaccharide? Write briefly. Answer A sugar molecule composed of … Read more
Chapter – 8 Cell : The unit of Life Q1. 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 the cells are formed from pre-existing cells. (d). A unicellular organism carries out its activities within a single cell. Answer: … Read more
Chapter – 7 Structural Origination Of Animal 1. Discuss how classification systems have undergone several changes over a period of time? Answer. 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 proposed different systems of classification which … Read more
Chapter – 6 Anatomy of flowering plants 1. State the location and function of different types of meristems. Answer. 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. The shoot apical meristem is present at the tip … Read more
Chapter – 5 Morphology Of Flowering Plants 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 Answer. Roots of some plants change their shape and structure and become modified to perform certain functions other than absorption and conduction … Read more
Chapter – 4 Animal Kingdom 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. Animal classification would be very confusing if fundamental features are not considered. (i) Animals having different … Read more
Chapter – 3 Plant Kingdom 1. What is the basis of classification of algae? Answer. Fritsch (1935), has classified algae considering phylogeny, affinities and inter-relationships of various forms. 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 … Read more
Chapter – 2 Biological Classification 1. Discuss how classification systems have undergone several changes over a period of time? Answer. 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 proposed different systems of classification which have undergone … Read more
Chapter – 1 The Living world 1. Why are living organisms classified? Solution: The earth contains millions of organisms, and we may know the plants and animals that live near us by their native names. The local names vary from place to place within a country. This leads to confusion in identifying and studying specific … Read more