MADHYAMIK EXAMINATION 2013
LIFE SCIENCE
Time- Three Hours Fifteen Minutes
(First fifteen minutes for reading the question paper only)
Full Marks-90
(For Regular and Sightless Regular Candidates)
Full marks-100
(For External and Sightless External Candidates)
FOR REGULAR, EXTERNAL AND SIGHTLESS
CANDIDATES
Special credit will be given for answers which are brief and to the point. Marks will be deducted for spelling mistakes, untidiness and bad handwriting.
[ENGLISH VERSION]
(Bifurcated Syllabus)
(For Class X Syllabus Only)
Directions
For Regular Candidates, the questions of Group 'A' , 'B' and 'C' will have to be answered.
For External Candidates, the questions of Group 'D' will also have to be answered in addition to group 'A', 'B' and 'C'.
Instructions regarding the number of questions to be attempted have been indicated at the beginning of each group.
Special Instruction for Sightless Candidates
In Group 'C', instead of Question Nos. 12 and 13, any one of the Question Nos. 12(A) and 13(A) will have to be answered.
Group 'A'
[Candidates will have to answer question Nos. 1,2,3 and 4]
1. Complete the sentences choosing the correct answer (any five): 1x5=5
(i) The part of human eye that functions as refractive media is
(a) Cornea (b) Retina
(c) Vitreous humor (d) Choroid
(ii) Which of the following endocrine gland secretes TSH?
(a) Thyroid (b) Testes
(c) Adrenal (d) Pituitary
(iii) In a DNA molecule the complimentary base pair of guanine is
(a) Adenine (b) Cytosine
(c) Thymine (d) Uracil
