JAM Classes

  ENVIRONMENTAL SCIENCE CLASS: 11th      Year 2020 Time: 3 Hours       Maximum Marks: 70 Section- A Note: Question number 1-8 to be answered in one word or one sentence: (1 marks each). 1. Plants which grow on saline Environment are called halophytes. 2. Lichen is association between algae and fungi. 3. The chemical and organic process dead organisms undergo to become coal is carbonization. 4. Ozone which act as shield for uv-radiations occurs in which atmospheric layer stratosphere. 5. Widal test is done for identifying which disease typhoid fever. 6. Expand WHO .   World Health Organization. 7. The maximum population size a particular environment can support is carrying capacity. 8. Natality is scientific term for births rate. Section- B Note: - Q. Nos. 9-18 to be answered in 30 words. (2 marks each0. 9. What is Bt cotton? Ans. Bt cotton is a Genetically Modified Organism or we can say genet...

Previous Year Question Papers of Jammu and Kashmir Board of School Education ENVIRONMENTAL SCIENCE CLASS: 11th            Year 2020 Time: 3 Hours         Maximum Marks: 70 Section- A Note: Question number 1-8 to be answered in one word or one sentence: 1. Plants which grow on saline Environment are called…………………. 2. Lichen is association between…………………… and……….………. 3. The chemical and organic process dead organisms undergo to become coal is…… 4. Ozone which act as shield for uv-radiations occurs in which atmospheric layer…… 5. Widal test is done for identifying which disease………………. 6. Expand WHO. 7. The maximum population size a particular environment can support is …………… 8. Natality is scientific term for…………. Section- B Note: - Q. Nos. 9-18 to be answered in 30 words 9. What is Bt cotton? 10. What are the major environmental issues? 11. Enlist few products obtained from animals. 12. Why is World Environment Day Celebrated on...