Biotechnology and Its Applications Important Questions for CBSE Class 12 Biology Transgenic Animals and Ethical Issues 1.Transgenic animals are animals that have had their DNA manipulated to possess and express an extra (foreign) gene. For example, transgenic mice, rats, rabbits, pigs, sheeps, cows and fish have been produced. 2. Common reasons for developing transgenic … [Read more...]
Important Questions for CBSE Class 12 Biology Animal Husbandry
Strategies for Enhancement in Food Production Important Questions for CBSE Class 12 Biology Animal Husbandry 1.Animal husbandry is the agricultural practice of breeding and raising livestock. It deals with the care and breeding of livestock like buffaloes, cows, pigs, horses, cattle, sheep, goat, etc. It also includes poultry farming and fisheries. More than 70%*of the world’s … [Read more...]
Important Questions for CBSE Class 12 Biology Energy Flow and Ecological Succession
Ecosystem Important Questions for CBSE Class 12 Biology Energy Flow and Ecological Succession 1.Energy Flow (i)Sun is the only source of energy for all the ecosystems on earth, except for deep sea hydrothermal ecosystem. (ii)Of the total incident solar radiation, less than 50% is Photosynthetically Active Radiation (PAR). (iii)Plants capture only 2-10% of the PAR and this … [Read more...]
Important Questions for CBSE Class 12 Biology Biotechnological Applications in Agriculture and Medicine
Biotechnology and Its Applications Important Questions for CBSE Class 12 Biology Biotechnological Applications in Agriculture and Medicine 1. Biotechnology essentially deals with industrial scale production of biopharmaceuticals and biologicals. The applications of biotechnology include therapeutics, diagnostics, genetically modified crops for agriculture, processed food, … [Read more...]
Important Questions for CBSE Class 12 Biology Sexual Reproduction
Reproduction in Organisms Important Questions for CBSE Class 12 Biology Sexual Reproduction 1.All organisms have to reach a certain stage of growth and maturity in their life cycle before they reproduce sexually. 2.Life cycle of an organism is divided into the following three phases: (i)Juvenile or vegetative phase - Pre-reproductive period (ii)Reproductive phase — … [Read more...]