NCERT Exemplar Class 12 Biology Chapter 14 Ecosystem Multiple Choice Questions Single Correct Answer Type 1. Decomposers like fungi and bacteria are i. Autotrophs ii. Heterotrophs iii. Saprotrophs iv. Chemo-autptrophs Choose the correct answer: (a) i and iii (b) i and iv (c) ii and iii (d) i and ii Answer. (c) Decomposers like fungi…
Read more
NCERT Exemplar Class 12 Biology Chapter 13 Organisms and Populations Multiple Choice Questions Single Correct Answer Type 1. Autecology is the (a) Relation of a population to its environment (b) Relation of an individual to its environment (c) Relation of a community to its environment (d) Relation of a biome to its environment Answer. (b)…
Read more
NCERT Exemplar Class 12 Biology Chapter 12 Biotechnology and its Applications Multiple Choice Questions Single Correct Answer Type 1. Bt cotton is not (a) A GM plant (b) Insect resistant (c) A bacterial gene expressing system (d) Resistant to all pesticides Answer. (d) Bt cotton is a GM plant, insect resistant and a bacterial gene…
Read more
NCER Exemplar Class 12 Biology Chapter 11 Biotechnology: Principles and Processes Multiple Choice Questions Single Correct Answer Type 1. Rising of dough is due to (a) Multiplication of yeast (b) Production of CO2 (c) Emulsification (d) Hydrolysis of wheat flour starch into sugars. Answer. (b) Dough, which is used for making dosa and idli is…
Read more
NCERT Exemplar Class 12 Biology Chapter 10 Microbes in Human Welfare Multiple Choice Questions Single Correct Answer Type 1. The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is (a) Vitamin C (b) Vitamin D (c) Vitamin B12 (d) Vitamin E Answer. (c) The vitamin B12 content increases…
Read more
NCERT Exemplar Class 12 Biology Chapter 9 Strategies for Enhancement in Food Production Multiple Choice Questions Single Correct Answer Type 1. The chances of contacting bird flu from a properly cooked (above 100°C) chicken and egg are (a) Very high (b) High (c) Moderate (d) None Answer. (d) Properly cooked (above 100°C) chicken and egg…
Read more
NCERT Exemplar Class 12 Biology Chapter 8 Human Health and Diseases Multiple Choice Questions Single Correct Answer Type 1. The term ‘Health’ is defined in many ways. The most accurate definition of the health would be (a) Health is the state of body and mind in a balanced condition (b) Health is the reflection of…
Read more
NCERT Exemplar Class 12 Biology Chaper 7 Evolution Multiple Choice Questions Single Correct Answer Type 1. Which of the following is used as an atmospheric pollution indicator? (a) Lepidoptera (b) Lichens (c) Lycopersicon (d) Lycopodium Answer. (b) Lichens are sensitive to SO2 pollution. Lichens are very good pollution indicators, they do not grow in polluted…
Read more
NCERT Exemplar Class 12 Biology Chapter 6 Molecular Basis of Inheritance Multiple Choice Questions Single Correct Answer Type 1. In a DNA strand the nucleotides are linked together by (a) Glycosidic bonds (b) Phosphodiester bonds (c) Peptide bonds (d) Hydrogen bonds Answer. (b) In a DNA strand the nucleotides are linked together by Phosphodiester bonds.…
Read more
Biology NCERT Chapter 5 – Principles of Inheritance and Variation 1. Mention the advantages of selecting a pea plant for the experiment by Mendel. Solution: Gregor Mendel demonstrated characters of inheritance acquired by offspring from parents. He selected a pea plant for this experiment for the following reasons: Peas exhibit several visible contrasting features, such…
Read more