CBSE Class 12 Biology Applications of Biotechnology (1). CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.
ONE MARK QUESTIONS
1.What was the speciality of the milk produced by cow Rosie?
2.Describe the responsibility of GEAC, set- up by the Indian Government.
TWO MARKS QUESTIONS
3.Nematode specific genes are introduced into the tobacco plants using Agrobacterium vectors to develop resistance in tobacco plants against nematodes. Explain the events that occur in tobacco plant to develop resistance.
4.Name the source organism from which Ti plasmid is isolated. Explain the use of this plasmid in biotechnology.
5.Highlight the any four advantages of Genetically Modified Organisms (GMOs).
6.One of the main objectives of biotechnology is to minimize the use of insecticides on cultivated crops. Explain with the help of a suitable example how insect resistant crops have been developed using techniquesof biotechnology
8.How is transgenic tobacco plant protected against Meloidegyneincognita? Explain the procedure.
3 MARK QUESTIONS
9.Name the source and the types of Cry genes isolated from it for incorporation into crops by biotechnologists. Explain how these genes have brought beneficial changes in the genetically modified crops
10.How did Eli lily company go about preparing the human insulin? How is the insulin thus produced different from that produced by the functional human insulin gene?
11.a) Name the nematode that infests and damages tobacco roots.
b) How are transgenic tobacco plants produced to solve this problem?
12a) How is mature insulin different from proinsulin secreted by pancreas in humans?
b) Explain how was human functional insulin produced using rDNA technology?
Why is the functional insulin thus produced considered better than the ones earlier by diabetic patients?
Please click the link below to download full pdf file for CBSE Class 12 Biology Applications of Biotechnology (1).
Click for more Biology Study Material ›