(i) There are a total of 26 questions and five sections in the question paper, All questions are compulsory.
(ii) Section A contains question number 1 to 5, Very Short Answer type questions of one mark each.
(iii) Section B contains question number 6 to 10, Short Answer type I questions of two marks each.
(iv) Section C contains question number 11 to 22, Short Answer type II questions of three marks each.
(v) Section D contains question number 23, Value Based Question of four marks.
(vi) Section E contains question number 24 to 26, Long Answer type questions of five marks each.
(vii) There is no overall choice in the question paper, however, an internal choice is provided in one question of two marks, one question of three marks and all three questions of five marks. An examinee is to attempt any one of the questions out of the two given in the question paper with the same question number.
What does nature's carrying capacity for a species indicate?VIEW SOLUTION
- Q2VIEW SOLUTION
- Q3VIEW SOLUTION
- Q4VIEW SOLUTION
- Q5VIEW SOLUTION
- Q6VIEW SOLUTION
- Q7VIEW SOLUTION
- Q8VIEW SOLUTION
- Q9VIEW SOLUTION
- Q10VIEW SOLUTION
- Q11VIEW SOLUTION
- Q12VIEW SOLUTION
- Q13VIEW SOLUTION
- Q14VIEW SOLUTION
- Q15VIEW SOLUTION
Draw a pyramid of bio-mass and pyramid of energy in sea. Give your comments on the shape of pyramids drawn.Or
(a) Rearrange the following greenhouse gases in increasing order of their relative contribution to the total global warming.
N2O; CFC; CO2; C2H4.
(b) What is the effect of global warming on polar ice-caps? Comment on its possible ecological impact. VIEW SOLUTION
- Q17VIEW SOLUTION
- Q18VIEW SOLUTION
You make a visit to a Hill station, one of your friend suddenly became unwell and felt uneasy.VIEW SOLUTION
(a) list two symptoms you would look for to term it to be due to allergen.
(b) Explain the response of the body to an allergen.
(c) Name two drugs that can be recommended for immediate relief.
- Q20VIEW SOLUTION
- Q21VIEW SOLUTION
- Q22VIEW SOLUTION
You have a friend whose parents are too indulgent in his/her daily affairs. They think him/her to be still young which makes him/her sad and is upset all the time. As he/she feels that the parents should give him/her opportunity to take independent decision on some issues.VIEW SOLUTION
(a) Would you support your friend and why?
(b) Write the characteristics of this age group.
(c) List two curative measures.
(a) Where does spermatogenesis occur in human testes? Describe the process of spermatogenesis upto the formation of spermatozoa.
(b) Trace the path of spermatozoa from the testes upto the ejaculatory duct only.
Explain the events upto fertilization that occur in a flower after the pollengrain has landed on its compatible stigma. VIEW SOLUTION
(a) How does a Human Immunodeficiency Virus (HIV) replicate in a host?
(b) How does an HIV-infected patient lose immunity?
(c) List any two symptoms of this disease.
Describe the process of waste-water treatment under the following heads :
(a) Primary treatment.
(b) Secondary treatment. VIEW SOLUTION
(a) State the cause and symptoms of colour-blindness in humans.
(b) Statistical data has shown that 8% of the human males are colour-blind when only 0.4% of females are colour-blind. Explain giving reasons how is it so.
(a) Describe Hardy-Weinberg's principle.
(b) How do variation lead to speciation?
(c) How is the genetic equilibrium affected by the variations leading to speciation. VIEW SOLUTION
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