Past Year Paper, Biology (Set - 2), Foreign, 2016, Class 12, Biology | Additional Study Material for NEET PDF Download

 Page 1


57/2/2 1 [P.T.O. 
 
 
 
 
¸üÖê»Ö ®ÖÓ. 
Roll No.  
 
 
 
•Öß¾Ö ×¾Ö–ÖÖ®Ö (ÃÖî¨üÖ×®ŸÖÛú) 
BIOLOGY (Theory)  
×®Ö¬ÖÖÔ׸üŸÖ ÃÖ´ÖµÖ  :    3 ‘ÖÓ™êü †×¬ÖÛúŸÖ´Ö †ÓÛú  : 70 
Time allowed : 3 hours Maximum Marks : 70 
 
ÃÖÖ´ÖÖ®µÖ ×®Ö¤ìü¿Ö    : : : :   
    (i) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¯ÖÖÑ“Ö ÜÖÞ›üÖë ´Öë 26 ¯ÖÏ¿®Ö פü‹ ÝÖ‹ Æïü … ÃÖ³Öß ¯ÖÏ¿®Ö †×®Ö¾ÖÖµÖÔ Æïü … 
 (ii) ÜÖÞ›ü – Ûú ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 1 ÃÖê 5 †×ŸÖ »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö Æïü … ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ‹Ûú †ÓÛú ÛúÖ Æîü …  
 (iii) ÜÖÞ›ü – ÜÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 6 ÃÖê 10 »Ö‘Öã-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö I ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¤üÖê †ÓÛúÖë ÛúÖ Æîü …  
 (iv) ÜÖÞ›ü – ÝÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 11 ÃÖê 22 »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö II ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ŸÖß®Ö †ÓÛúÖë ÛúÖ Æîü …  
 (v) ÜÖÞ›ü – ‘Ö ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 23 ´Öæ»µÖ †Ö¬ÖÖ׸üŸÖ ¯ÖÏ¿®Ö “ÖÖ¸ü †ÓÛúÖë ÛúÖ Æîü …  
 (vi) ÜÖÞ›ü – ’û  ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 24 ÃÖê 26 ¤üß‘ÖÔ-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¯ÖÖÑ“Ö †ÓÛúÖë ÛúÖ Æîü …  
 (vii) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ÃÖ´ÖÝÖÏ ¯Ö¸ü ÛúÖê‡Ô ×¾ÖÛú»¯Ö ®ÖÆüà Æîü, ×±ú¸ü ³Öß ¤üÖê †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú ¯ÖÏ¿®Ö ´Öë, ŸÖß®Ö †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú 
¯ÖÏ¿®Ö ´Öë †Öî¸ü ¯ÖÖÑ“Ö †ÓÛúÖë ¾ÖÖ»Öê ÃÖ³Öß ŸÖß®ÖÖë ¯ÖÏ¿®ÖÖë ´Öë ³Öߟָüß “ÖµÖ®Ö-×¾ÖÛú»¯Ö פü‹ ÝÖ‹ Æïü … ¯ÖÏŸµÖêÛú ¯Ö¸üßõÖÖ£Öá ÛúÖê 
‹êÃÖê ¯ÖÏ¿®ÖÖë Ûêú ¤üÖê ×¾ÖÛú»¯ÖÖë ´Öë ÃÖê ÛúÖê‡Ô ‹Ûú ¯ÖÏ¿®Ö Æü»Ö Ûú¸ü®ÖÖ Æîü …  
 Series : ONS/2 
57/2/2
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ´ÖãצüŸÖ ¯Öéšü 8 Æïü … 
• ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¤üÖ×Æü®Öê ÆüÖ£Ö Ûúß †Öê¸ü פü‹ ÝÖ‹ ÛúÖê›ü ®Ö´²Ö¸ü ÛúÖê ”ûÖ¡Ö ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü ¯Ö¸ü ×»ÖÜÖë …  
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë 26 ¯ÖÏ¿®Ö Æïü …  
• Ûéú¯ÖµÖÖ ¯ÖÏ¿®Ö ÛúÖ ˆ¢Ö¸ü ×»ÖÜÖ®ÖÖ ¿Öãºþ Ûú¸ü®Öê ÃÖê ¯ÖÆü»Öê, ¯ÖÏ¿®Ö ÛúÖ ÛÎú´ÖÖÓÛú †¾Ö¿µÖ ×»ÖÜÖë …  
• ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌü®Öê Ûêú ×»Ö‹ 15 ×´Ö®Ö™ü ÛúÖ ÃÖ´ÖµÖ ×¤üµÖÖ ÝÖµÖÖ Æîü … ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖ ×¾ÖŸÖ¸üÞÖ ¯Öæ¾ÖÖÔÆËü®Ö ´Öë 10.15 ²Ö•Öê 
×ÛúµÖÖ •ÖÖµÖêÝÖÖ … 10.15 ²Ö•Öê ÃÖê 10.30 ²Ö•Öê ŸÖÛú ”ûÖ¡Ö Ûêú¾Ö»Ö ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌëüÝÖê †Öî¸ü ‡ÃÖ †¾Ö×¬Ö Ûêú ¤üÖî¸üÖ®Ö ¾Öê 
ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ ¯Ö¸ü ÛúÖê‡Ô ˆ¢Ö¸ü ®ÖÆüà ×»ÖÜÖëÝÖê …  
• Please check that this question paper contains 8 printed pages. 
• Code number given on the right hand side of the question paper should be written on the 
title page of the answer-book by the candidate. 
• Please check that this question paper contains 26 questions. 
• Please write down the Serial Number of the question before attempting it. 
• 15 minute time has been allotted to read this question paper. The question paper will be 
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the 
question paper only and will not write any answer on the answer-book during this period. 
ÛúÖê›ü ®ÖÓ. 
Code No.  
    
¯Ö¸üßõÖÖ£Öá ÛúÖê›ü ÛúÖê ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü 
¯Ö¸ü †¾Ö¿µÖ ×»ÖÜÖë … 
Candidates must write the Code on 
the title page of the answer-book. 
 
SET – 2 
Page 2


57/2/2 1 [P.T.O. 
 
 
 
 
¸üÖê»Ö ®ÖÓ. 
Roll No.  
 
 
 
•Öß¾Ö ×¾Ö–ÖÖ®Ö (ÃÖî¨üÖ×®ŸÖÛú) 
BIOLOGY (Theory)  
×®Ö¬ÖÖÔ׸üŸÖ ÃÖ´ÖµÖ  :    3 ‘ÖÓ™êü †×¬ÖÛúŸÖ´Ö †ÓÛú  : 70 
Time allowed : 3 hours Maximum Marks : 70 
 
ÃÖÖ´ÖÖ®µÖ ×®Ö¤ìü¿Ö    : : : :   
    (i) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¯ÖÖÑ“Ö ÜÖÞ›üÖë ´Öë 26 ¯ÖÏ¿®Ö פü‹ ÝÖ‹ Æïü … ÃÖ³Öß ¯ÖÏ¿®Ö †×®Ö¾ÖÖµÖÔ Æïü … 
 (ii) ÜÖÞ›ü – Ûú ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 1 ÃÖê 5 †×ŸÖ »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö Æïü … ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ‹Ûú †ÓÛú ÛúÖ Æîü …  
 (iii) ÜÖÞ›ü – ÜÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 6 ÃÖê 10 »Ö‘Öã-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö I ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¤üÖê †ÓÛúÖë ÛúÖ Æîü …  
 (iv) ÜÖÞ›ü – ÝÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 11 ÃÖê 22 »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö II ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ŸÖß®Ö †ÓÛúÖë ÛúÖ Æîü …  
 (v) ÜÖÞ›ü – ‘Ö ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 23 ´Öæ»µÖ †Ö¬ÖÖ׸üŸÖ ¯ÖÏ¿®Ö “ÖÖ¸ü †ÓÛúÖë ÛúÖ Æîü …  
 (vi) ÜÖÞ›ü – ’û  ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 24 ÃÖê 26 ¤üß‘ÖÔ-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¯ÖÖÑ“Ö †ÓÛúÖë ÛúÖ Æîü …  
 (vii) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ÃÖ´ÖÝÖÏ ¯Ö¸ü ÛúÖê‡Ô ×¾ÖÛú»¯Ö ®ÖÆüà Æîü, ×±ú¸ü ³Öß ¤üÖê †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú ¯ÖÏ¿®Ö ´Öë, ŸÖß®Ö †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú 
¯ÖÏ¿®Ö ´Öë †Öî¸ü ¯ÖÖÑ“Ö †ÓÛúÖë ¾ÖÖ»Öê ÃÖ³Öß ŸÖß®ÖÖë ¯ÖÏ¿®ÖÖë ´Öë ³Öߟָüß “ÖµÖ®Ö-×¾ÖÛú»¯Ö פü‹ ÝÖ‹ Æïü … ¯ÖÏŸµÖêÛú ¯Ö¸üßõÖÖ£Öá ÛúÖê 
‹êÃÖê ¯ÖÏ¿®ÖÖë Ûêú ¤üÖê ×¾ÖÛú»¯ÖÖë ´Öë ÃÖê ÛúÖê‡Ô ‹Ûú ¯ÖÏ¿®Ö Æü»Ö Ûú¸ü®ÖÖ Æîü …  
 Series : ONS/2 
57/2/2
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ´ÖãצüŸÖ ¯Öéšü 8 Æïü … 
• ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¤üÖ×Æü®Öê ÆüÖ£Ö Ûúß †Öê¸ü פü‹ ÝÖ‹ ÛúÖê›ü ®Ö´²Ö¸ü ÛúÖê ”ûÖ¡Ö ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü ¯Ö¸ü ×»ÖÜÖë …  
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë 26 ¯ÖÏ¿®Ö Æïü …  
• Ûéú¯ÖµÖÖ ¯ÖÏ¿®Ö ÛúÖ ˆ¢Ö¸ü ×»ÖÜÖ®ÖÖ ¿Öãºþ Ûú¸ü®Öê ÃÖê ¯ÖÆü»Öê, ¯ÖÏ¿®Ö ÛúÖ ÛÎú´ÖÖÓÛú †¾Ö¿µÖ ×»ÖÜÖë …  
• ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌü®Öê Ûêú ×»Ö‹ 15 ×´Ö®Ö™ü ÛúÖ ÃÖ´ÖµÖ ×¤üµÖÖ ÝÖµÖÖ Æîü … ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖ ×¾ÖŸÖ¸üÞÖ ¯Öæ¾ÖÖÔÆËü®Ö ´Öë 10.15 ²Ö•Öê 
×ÛúµÖÖ •ÖÖµÖêÝÖÖ … 10.15 ²Ö•Öê ÃÖê 10.30 ²Ö•Öê ŸÖÛú ”ûÖ¡Ö Ûêú¾Ö»Ö ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌëüÝÖê †Öî¸ü ‡ÃÖ †¾Ö×¬Ö Ûêú ¤üÖî¸üÖ®Ö ¾Öê 
ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ ¯Ö¸ü ÛúÖê‡Ô ˆ¢Ö¸ü ®ÖÆüà ×»ÖÜÖëÝÖê …  
• Please check that this question paper contains 8 printed pages. 
• Code number given on the right hand side of the question paper should be written on the 
title page of the answer-book by the candidate. 
• Please check that this question paper contains 26 questions. 
• Please write down the Serial Number of the question before attempting it. 
• 15 minute time has been allotted to read this question paper. The question paper will be 
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the 
question paper only and will not write any answer on the answer-book during this period. 
ÛúÖê›ü ®ÖÓ. 
Code No.  
    
¯Ö¸üßõÖÖ£Öá ÛúÖê›ü ÛúÖê ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü 
¯Ö¸ü †¾Ö¿µÖ ×»ÖÜÖë … 
Candidates must write the Code on 
the title page of the answer-book. 
 
SET – 2 
57/2/2 2  
General Instructions :   
 (i) There are a total of 26 questions and five sections in the question paper.                     
All questions are compulsory. 
 (ii) Section A contains questions number 1 to 5, Very Short Answer type questions of 
one mark each. 
 (iii) Section B contains questions number 6 to 10, Short Answer type-I questions of two 
marks each. 
 (iv) Section C contains questions 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 questions 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.  
 
ÜÖÞ›ü – Ûú 
SECTION – A 
1. ×ÛúÃÖß Ã¯Öß¿Öß•ÖÌ Ûêú ×»Ö‹ ¯ÖÏÛéú×ŸÖ Ûúß ¾ÖÆü®Ö õÖ´ÖŸÖÖ ×ÛúÃÖ ²ÖÖŸÖ ÛúÖ ÃÖÓÛêúŸÖ ¤êüŸÖß Æîü ? 1 
 What does nature’s carrying capacity for a species indicate ? 
  
2. ‹Ûú ÃÖÓפüÝ¬Ö AIDS Ûêú ¸üÖêÝÖß ´Öë HIV ÛúÖ ¯ÖŸÖÖ »ÖÝÖÖ®Öê Ûêú ×»Ö‹ †Ö×Þ¾ÖÛú ®Öî¤üÖ×®ÖÛúú ×ÛÎúµÖÖ×¾Ö×¬Ö ÛúÖ ÃÖã—ÖÖ¾Ö      
¤üßו֋ …   1 
 Suggest a molecular diagnostic procedure that detects HIV in a suspected AIDS patient.  
 
3. ¤üÖê •ÖÓŸÖã†Öë Ûêú ®ÖÖ´Ö ²ÖŸÖÖ‡‹ וִ֮Öë ´Ö¤ü “ÖÛÎú ¯ÖϤüÙ¿ÖŸÖ ÆüÖêŸÖÖ Æîü … 1 
 Name two animals that exhibit Oestrus cycle. 
 
4. ‹Ûú ‹ŒÃÖÖò®Ö ÃÖê ‹Ûú ‡®™ÒüÖò®Ö ´Öë ³Öê¤ü Ûú¸ü®Öê Ûêú ×»Ö‹ ‹Ûú †ÓŸÖ¸ü ²ÖŸÖÖ‡‹ … 1 
 Mention one difference to distinguish an exon from an intron. 
 
5. ˆŸ¯Ö׸ü¾ÖŸÖÔ•Ö®Ö ŒµÖÖ ÆüÖêŸÖÖ Æîü ? ×ÛúÃÖß ³ÖÖîןÖÛú ÛúÖ¸üÛú ÛúÖ ®ÖÖ´Ö ²ÖŸÖÖ‡‹ •ÖÖê ˆŸ¯Ö׸ü¾ÖŸÖÔ•Ö®Ö ÆüÖê ÃÖÛúŸÖÖ Æîü … 1 
 What is a Mutagen ? Name a physical factor that can be a Mutagen.  
Page 3


57/2/2 1 [P.T.O. 
 
 
 
 
¸üÖê»Ö ®ÖÓ. 
Roll No.  
 
 
 
•Öß¾Ö ×¾Ö–ÖÖ®Ö (ÃÖî¨üÖ×®ŸÖÛú) 
BIOLOGY (Theory)  
×®Ö¬ÖÖÔ׸üŸÖ ÃÖ´ÖµÖ  :    3 ‘ÖÓ™êü †×¬ÖÛúŸÖ´Ö †ÓÛú  : 70 
Time allowed : 3 hours Maximum Marks : 70 
 
ÃÖÖ´ÖÖ®µÖ ×®Ö¤ìü¿Ö    : : : :   
    (i) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¯ÖÖÑ“Ö ÜÖÞ›üÖë ´Öë 26 ¯ÖÏ¿®Ö פü‹ ÝÖ‹ Æïü … ÃÖ³Öß ¯ÖÏ¿®Ö †×®Ö¾ÖÖµÖÔ Æïü … 
 (ii) ÜÖÞ›ü – Ûú ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 1 ÃÖê 5 †×ŸÖ »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö Æïü … ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ‹Ûú †ÓÛú ÛúÖ Æîü …  
 (iii) ÜÖÞ›ü – ÜÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 6 ÃÖê 10 »Ö‘Öã-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö I ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¤üÖê †ÓÛúÖë ÛúÖ Æîü …  
 (iv) ÜÖÞ›ü – ÝÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 11 ÃÖê 22 »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö II ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ŸÖß®Ö †ÓÛúÖë ÛúÖ Æîü …  
 (v) ÜÖÞ›ü – ‘Ö ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 23 ´Öæ»µÖ †Ö¬ÖÖ׸üŸÖ ¯ÖÏ¿®Ö “ÖÖ¸ü †ÓÛúÖë ÛúÖ Æîü …  
 (vi) ÜÖÞ›ü – ’û  ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 24 ÃÖê 26 ¤üß‘ÖÔ-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¯ÖÖÑ“Ö †ÓÛúÖë ÛúÖ Æîü …  
 (vii) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ÃÖ´ÖÝÖÏ ¯Ö¸ü ÛúÖê‡Ô ×¾ÖÛú»¯Ö ®ÖÆüà Æîü, ×±ú¸ü ³Öß ¤üÖê †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú ¯ÖÏ¿®Ö ´Öë, ŸÖß®Ö †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú 
¯ÖÏ¿®Ö ´Öë †Öî¸ü ¯ÖÖÑ“Ö †ÓÛúÖë ¾ÖÖ»Öê ÃÖ³Öß ŸÖß®ÖÖë ¯ÖÏ¿®ÖÖë ´Öë ³Öߟָüß “ÖµÖ®Ö-×¾ÖÛú»¯Ö פü‹ ÝÖ‹ Æïü … ¯ÖÏŸµÖêÛú ¯Ö¸üßõÖÖ£Öá ÛúÖê 
‹êÃÖê ¯ÖÏ¿®ÖÖë Ûêú ¤üÖê ×¾ÖÛú»¯ÖÖë ´Öë ÃÖê ÛúÖê‡Ô ‹Ûú ¯ÖÏ¿®Ö Æü»Ö Ûú¸ü®ÖÖ Æîü …  
 Series : ONS/2 
57/2/2
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ´ÖãצüŸÖ ¯Öéšü 8 Æïü … 
• ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¤üÖ×Æü®Öê ÆüÖ£Ö Ûúß †Öê¸ü פü‹ ÝÖ‹ ÛúÖê›ü ®Ö´²Ö¸ü ÛúÖê ”ûÖ¡Ö ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü ¯Ö¸ü ×»ÖÜÖë …  
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë 26 ¯ÖÏ¿®Ö Æïü …  
• Ûéú¯ÖµÖÖ ¯ÖÏ¿®Ö ÛúÖ ˆ¢Ö¸ü ×»ÖÜÖ®ÖÖ ¿Öãºþ Ûú¸ü®Öê ÃÖê ¯ÖÆü»Öê, ¯ÖÏ¿®Ö ÛúÖ ÛÎú´ÖÖÓÛú †¾Ö¿µÖ ×»ÖÜÖë …  
• ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌü®Öê Ûêú ×»Ö‹ 15 ×´Ö®Ö™ü ÛúÖ ÃÖ´ÖµÖ ×¤üµÖÖ ÝÖµÖÖ Æîü … ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖ ×¾ÖŸÖ¸üÞÖ ¯Öæ¾ÖÖÔÆËü®Ö ´Öë 10.15 ²Ö•Öê 
×ÛúµÖÖ •ÖÖµÖêÝÖÖ … 10.15 ²Ö•Öê ÃÖê 10.30 ²Ö•Öê ŸÖÛú ”ûÖ¡Ö Ûêú¾Ö»Ö ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌëüÝÖê †Öî¸ü ‡ÃÖ †¾Ö×¬Ö Ûêú ¤üÖî¸üÖ®Ö ¾Öê 
ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ ¯Ö¸ü ÛúÖê‡Ô ˆ¢Ö¸ü ®ÖÆüà ×»ÖÜÖëÝÖê …  
• Please check that this question paper contains 8 printed pages. 
• Code number given on the right hand side of the question paper should be written on the 
title page of the answer-book by the candidate. 
• Please check that this question paper contains 26 questions. 
• Please write down the Serial Number of the question before attempting it. 
• 15 minute time has been allotted to read this question paper. The question paper will be 
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the 
question paper only and will not write any answer on the answer-book during this period. 
ÛúÖê›ü ®ÖÓ. 
Code No.  
    
¯Ö¸üßõÖÖ£Öá ÛúÖê›ü ÛúÖê ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü 
¯Ö¸ü †¾Ö¿µÖ ×»ÖÜÖë … 
Candidates must write the Code on 
the title page of the answer-book. 
 
SET – 2 
57/2/2 2  
General Instructions :   
 (i) There are a total of 26 questions and five sections in the question paper.                     
All questions are compulsory. 
 (ii) Section A contains questions number 1 to 5, Very Short Answer type questions of 
one mark each. 
 (iii) Section B contains questions number 6 to 10, Short Answer type-I questions of two 
marks each. 
 (iv) Section C contains questions 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 questions 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.  
 
ÜÖÞ›ü – Ûú 
SECTION – A 
1. ×ÛúÃÖß Ã¯Öß¿Öß•ÖÌ Ûêú ×»Ö‹ ¯ÖÏÛéú×ŸÖ Ûúß ¾ÖÆü®Ö õÖ´ÖŸÖÖ ×ÛúÃÖ ²ÖÖŸÖ ÛúÖ ÃÖÓÛêúŸÖ ¤êüŸÖß Æîü ? 1 
 What does nature’s carrying capacity for a species indicate ? 
  
2. ‹Ûú ÃÖÓפüÝ¬Ö AIDS Ûêú ¸üÖêÝÖß ´Öë HIV ÛúÖ ¯ÖŸÖÖ »ÖÝÖÖ®Öê Ûêú ×»Ö‹ †Ö×Þ¾ÖÛú ®Öî¤üÖ×®ÖÛúú ×ÛÎúµÖÖ×¾Ö×¬Ö ÛúÖ ÃÖã—ÖÖ¾Ö      
¤üßו֋ …   1 
 Suggest a molecular diagnostic procedure that detects HIV in a suspected AIDS patient.  
 
3. ¤üÖê •ÖÓŸÖã†Öë Ûêú ®ÖÖ´Ö ²ÖŸÖÖ‡‹ וִ֮Öë ´Ö¤ü “ÖÛÎú ¯ÖϤüÙ¿ÖŸÖ ÆüÖêŸÖÖ Æîü … 1 
 Name two animals that exhibit Oestrus cycle. 
 
4. ‹Ûú ‹ŒÃÖÖò®Ö ÃÖê ‹Ûú ‡®™ÒüÖò®Ö ´Öë ³Öê¤ü Ûú¸ü®Öê Ûêú ×»Ö‹ ‹Ûú †ÓŸÖ¸ü ²ÖŸÖÖ‡‹ … 1 
 Mention one difference to distinguish an exon from an intron. 
 
5. ˆŸ¯Ö׸ü¾ÖŸÖÔ•Ö®Ö ŒµÖÖ ÆüÖêŸÖÖ Æîü ? ×ÛúÃÖß ³ÖÖîןÖÛú ÛúÖ¸üÛú ÛúÖ ®ÖÖ´Ö ²ÖŸÖÖ‡‹ •ÖÖê ˆŸ¯Ö׸ü¾ÖŸÖÔ•Ö®Ö ÆüÖê ÃÖÛúŸÖÖ Æîü … 1 
 What is a Mutagen ? Name a physical factor that can be a Mutagen.  
57/2/2 3 [P.T.O. 
ÜÖÞ›ü – ÜÖ 
SECTION – B 
 
6. Æü´ÖÖ¸êü ¤êü¿Ö ´Öë E-†¾Ö׿Ö™üÖë ÛúÖ ×®Ö¯Ö™üÖ®Ö ×ÛúÃÖ ¯ÖÏÛúÖ¸ü ×ÛúµÖÖ •ÖÖŸÖÖ Æîü ? ‡ÃÖ †¾Ö׿Ö™ü Ûêú ×®Ö¯Ö™üÖ®Ö ÛúÖ ÃÖÆüß ŸÖ¸üßÛúÖ 
²ÖŸÖÖ‡‹ …   2 
 How e-wastes are being handled in our country ?  Write the correct solution for treating 
this waste. 
 
7. ÃÖÓÛú™üÖ¯Ö®®Ö •Öî¾Ö ×¾Ö×¾Ö¬ÖŸÖÖ Ûêú ÃÖÓ¸üõÖÞÖ Ûêú ×»Ö‹ “ÖÖ¸ü ˆ®®ÖŸÖ þÖ-ãÖÖ®Öê ×¾Ö׬ֵÖÖë ÛúÖ ÃÖã—ÖÖ¾Ö ¤üßו֋ … 2 
 Suggest four advanced ex-situ methods to conserve threatened biodiversity. 
 
8. ¯ÖÏÃÖ¾Ö ´Öë †ÖòŒÃÖß™üÖê×ÃÖ®Ö Ûúß ³Öæ×´ÖÛúÖ ²ÖŸÖÖ‡‹ … ׯ֙ËüµÖæ™ü¸üß ÝÖÏÓ×£Ö ÃÖê ‡ÃÖÛêú ׸üÃÖÖ¾Ö ÛúÖê ÛúÖî®Ö ¯ÖÏê׸üŸÖ Ûú¸üŸÖÖ Æîü ? 2 
 State the role of Oxytocin in parturition. What triggers its release from the pituitary ? 
 
9. (a) ±úÃÖ»ÖÖë Ûêú ¯Öã™üßÛú¸üÞÖ Ûúß †Ö•Ö †Ö¾Ö¿µÖÛúŸÖÖ Æîü … ¤üÖê ÛúÖ¸üÞÖ ²ÖŸÖÖ‡‹ … 
 (b) ×®Ö´®Ö×»Ö×ÜÖŸÖ ´Öë ÃÖê †»Ö¾ÖÞÖ •Ö»ÖßµÖ ´Ö”û»Öß †Öî¸ü ÃÖ´Öã¦üß ´Ö”û»Öß ¯ÖÆü“ÖÖ×®Ö‹ … 
  —ÖàÝÖÖ, Ûêú™ü»ÖÖ, ´ÖîÛêú¸ü»Ö, »ÖÖò²ÃÖ™ü¸ü 2 
 (a) “Fortification of crops is the need of the hour.” Give two reasons. 
 (b) Select one fresh-water and one marine fish from the following : 
   Prawn; Catla; Mackerel; Lobster 
 
10. ¯Ö¸üßõÖÖ£ÖÔ ÛÎúÖòÃÖ (ÃÖÓÛú¸üÞÖ) ÃÖê ‹Ûú ¾µÖ×™ü Ûêú •Öß®Ö ¯ÖϺþ¯Ö ÛúÖ ×®Ö¬ÖÖÔ¸üÞÖ Ûú¸ü®Öê ´Öë ÛîúÃÖê ´Ö¤ü¤ü ×´Ö»ÖŸÖß Æîü ? 2 
†£Ö¾ÖÖ 
 ›üß.‹®Ö.‹. ²ÖÆãüºþ¯ÖŸÖÖ Ûêú ¤üÖê †®Öã¯ÖϵÖÖêÝÖ ×»Ö×ÜÖ‹ … 
 How does a test cross help to determine the genotype of an individual ? 
             OR 
 Mention two applications of DNA polymorphism. 
Page 4


57/2/2 1 [P.T.O. 
 
 
 
 
¸üÖê»Ö ®ÖÓ. 
Roll No.  
 
 
 
•Öß¾Ö ×¾Ö–ÖÖ®Ö (ÃÖî¨üÖ×®ŸÖÛú) 
BIOLOGY (Theory)  
×®Ö¬ÖÖÔ׸üŸÖ ÃÖ´ÖµÖ  :    3 ‘ÖÓ™êü †×¬ÖÛúŸÖ´Ö †ÓÛú  : 70 
Time allowed : 3 hours Maximum Marks : 70 
 
ÃÖÖ´ÖÖ®µÖ ×®Ö¤ìü¿Ö    : : : :   
    (i) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¯ÖÖÑ“Ö ÜÖÞ›üÖë ´Öë 26 ¯ÖÏ¿®Ö פü‹ ÝÖ‹ Æïü … ÃÖ³Öß ¯ÖÏ¿®Ö †×®Ö¾ÖÖµÖÔ Æïü … 
 (ii) ÜÖÞ›ü – Ûú ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 1 ÃÖê 5 †×ŸÖ »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö Æïü … ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ‹Ûú †ÓÛú ÛúÖ Æîü …  
 (iii) ÜÖÞ›ü – ÜÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 6 ÃÖê 10 »Ö‘Öã-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö I ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¤üÖê †ÓÛúÖë ÛúÖ Æîü …  
 (iv) ÜÖÞ›ü – ÝÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 11 ÃÖê 22 »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö II ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ŸÖß®Ö †ÓÛúÖë ÛúÖ Æîü …  
 (v) ÜÖÞ›ü – ‘Ö ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 23 ´Öæ»µÖ †Ö¬ÖÖ׸üŸÖ ¯ÖÏ¿®Ö “ÖÖ¸ü †ÓÛúÖë ÛúÖ Æîü …  
 (vi) ÜÖÞ›ü – ’û  ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 24 ÃÖê 26 ¤üß‘ÖÔ-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¯ÖÖÑ“Ö †ÓÛúÖë ÛúÖ Æîü …  
 (vii) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ÃÖ´ÖÝÖÏ ¯Ö¸ü ÛúÖê‡Ô ×¾ÖÛú»¯Ö ®ÖÆüà Æîü, ×±ú¸ü ³Öß ¤üÖê †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú ¯ÖÏ¿®Ö ´Öë, ŸÖß®Ö †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú 
¯ÖÏ¿®Ö ´Öë †Öî¸ü ¯ÖÖÑ“Ö †ÓÛúÖë ¾ÖÖ»Öê ÃÖ³Öß ŸÖß®ÖÖë ¯ÖÏ¿®ÖÖë ´Öë ³Öߟָüß “ÖµÖ®Ö-×¾ÖÛú»¯Ö פü‹ ÝÖ‹ Æïü … ¯ÖÏŸµÖêÛú ¯Ö¸üßõÖÖ£Öá ÛúÖê 
‹êÃÖê ¯ÖÏ¿®ÖÖë Ûêú ¤üÖê ×¾ÖÛú»¯ÖÖë ´Öë ÃÖê ÛúÖê‡Ô ‹Ûú ¯ÖÏ¿®Ö Æü»Ö Ûú¸ü®ÖÖ Æîü …  
 Series : ONS/2 
57/2/2
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ´ÖãצüŸÖ ¯Öéšü 8 Æïü … 
• ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¤üÖ×Æü®Öê ÆüÖ£Ö Ûúß †Öê¸ü פü‹ ÝÖ‹ ÛúÖê›ü ®Ö´²Ö¸ü ÛúÖê ”ûÖ¡Ö ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü ¯Ö¸ü ×»ÖÜÖë …  
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë 26 ¯ÖÏ¿®Ö Æïü …  
• Ûéú¯ÖµÖÖ ¯ÖÏ¿®Ö ÛúÖ ˆ¢Ö¸ü ×»ÖÜÖ®ÖÖ ¿Öãºþ Ûú¸ü®Öê ÃÖê ¯ÖÆü»Öê, ¯ÖÏ¿®Ö ÛúÖ ÛÎú´ÖÖÓÛú †¾Ö¿µÖ ×»ÖÜÖë …  
• ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌü®Öê Ûêú ×»Ö‹ 15 ×´Ö®Ö™ü ÛúÖ ÃÖ´ÖµÖ ×¤üµÖÖ ÝÖµÖÖ Æîü … ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖ ×¾ÖŸÖ¸üÞÖ ¯Öæ¾ÖÖÔÆËü®Ö ´Öë 10.15 ²Ö•Öê 
×ÛúµÖÖ •ÖÖµÖêÝÖÖ … 10.15 ²Ö•Öê ÃÖê 10.30 ²Ö•Öê ŸÖÛú ”ûÖ¡Ö Ûêú¾Ö»Ö ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌëüÝÖê †Öî¸ü ‡ÃÖ †¾Ö×¬Ö Ûêú ¤üÖî¸üÖ®Ö ¾Öê 
ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ ¯Ö¸ü ÛúÖê‡Ô ˆ¢Ö¸ü ®ÖÆüà ×»ÖÜÖëÝÖê …  
• Please check that this question paper contains 8 printed pages. 
• Code number given on the right hand side of the question paper should be written on the 
title page of the answer-book by the candidate. 
• Please check that this question paper contains 26 questions. 
• Please write down the Serial Number of the question before attempting it. 
• 15 minute time has been allotted to read this question paper. The question paper will be 
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the 
question paper only and will not write any answer on the answer-book during this period. 
ÛúÖê›ü ®ÖÓ. 
Code No.  
    
¯Ö¸üßõÖÖ£Öá ÛúÖê›ü ÛúÖê ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü 
¯Ö¸ü †¾Ö¿µÖ ×»ÖÜÖë … 
Candidates must write the Code on 
the title page of the answer-book. 
 
SET – 2 
57/2/2 2  
General Instructions :   
 (i) There are a total of 26 questions and five sections in the question paper.                     
All questions are compulsory. 
 (ii) Section A contains questions number 1 to 5, Very Short Answer type questions of 
one mark each. 
 (iii) Section B contains questions number 6 to 10, Short Answer type-I questions of two 
marks each. 
 (iv) Section C contains questions 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 questions 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.  
 
ÜÖÞ›ü – Ûú 
SECTION – A 
1. ×ÛúÃÖß Ã¯Öß¿Öß•ÖÌ Ûêú ×»Ö‹ ¯ÖÏÛéú×ŸÖ Ûúß ¾ÖÆü®Ö õÖ´ÖŸÖÖ ×ÛúÃÖ ²ÖÖŸÖ ÛúÖ ÃÖÓÛêúŸÖ ¤êüŸÖß Æîü ? 1 
 What does nature’s carrying capacity for a species indicate ? 
  
2. ‹Ûú ÃÖÓפüÝ¬Ö AIDS Ûêú ¸üÖêÝÖß ´Öë HIV ÛúÖ ¯ÖŸÖÖ »ÖÝÖÖ®Öê Ûêú ×»Ö‹ †Ö×Þ¾ÖÛú ®Öî¤üÖ×®ÖÛúú ×ÛÎúµÖÖ×¾Ö×¬Ö ÛúÖ ÃÖã—ÖÖ¾Ö      
¤üßו֋ …   1 
 Suggest a molecular diagnostic procedure that detects HIV in a suspected AIDS patient.  
 
3. ¤üÖê •ÖÓŸÖã†Öë Ûêú ®ÖÖ´Ö ²ÖŸÖÖ‡‹ וִ֮Öë ´Ö¤ü “ÖÛÎú ¯ÖϤüÙ¿ÖŸÖ ÆüÖêŸÖÖ Æîü … 1 
 Name two animals that exhibit Oestrus cycle. 
 
4. ‹Ûú ‹ŒÃÖÖò®Ö ÃÖê ‹Ûú ‡®™ÒüÖò®Ö ´Öë ³Öê¤ü Ûú¸ü®Öê Ûêú ×»Ö‹ ‹Ûú †ÓŸÖ¸ü ²ÖŸÖÖ‡‹ … 1 
 Mention one difference to distinguish an exon from an intron. 
 
5. ˆŸ¯Ö׸ü¾ÖŸÖÔ•Ö®Ö ŒµÖÖ ÆüÖêŸÖÖ Æîü ? ×ÛúÃÖß ³ÖÖîןÖÛú ÛúÖ¸üÛú ÛúÖ ®ÖÖ´Ö ²ÖŸÖÖ‡‹ •ÖÖê ˆŸ¯Ö׸ü¾ÖŸÖÔ•Ö®Ö ÆüÖê ÃÖÛúŸÖÖ Æîü … 1 
 What is a Mutagen ? Name a physical factor that can be a Mutagen.  
57/2/2 3 [P.T.O. 
ÜÖÞ›ü – ÜÖ 
SECTION – B 
 
6. Æü´ÖÖ¸êü ¤êü¿Ö ´Öë E-†¾Ö׿Ö™üÖë ÛúÖ ×®Ö¯Ö™üÖ®Ö ×ÛúÃÖ ¯ÖÏÛúÖ¸ü ×ÛúµÖÖ •ÖÖŸÖÖ Æîü ? ‡ÃÖ †¾Ö׿Ö™ü Ûêú ×®Ö¯Ö™üÖ®Ö ÛúÖ ÃÖÆüß ŸÖ¸üßÛúÖ 
²ÖŸÖÖ‡‹ …   2 
 How e-wastes are being handled in our country ?  Write the correct solution for treating 
this waste. 
 
7. ÃÖÓÛú™üÖ¯Ö®®Ö •Öî¾Ö ×¾Ö×¾Ö¬ÖŸÖÖ Ûêú ÃÖÓ¸üõÖÞÖ Ûêú ×»Ö‹ “ÖÖ¸ü ˆ®®ÖŸÖ þÖ-ãÖÖ®Öê ×¾Ö׬ֵÖÖë ÛúÖ ÃÖã—ÖÖ¾Ö ¤üßו֋ … 2 
 Suggest four advanced ex-situ methods to conserve threatened biodiversity. 
 
8. ¯ÖÏÃÖ¾Ö ´Öë †ÖòŒÃÖß™üÖê×ÃÖ®Ö Ûúß ³Öæ×´ÖÛúÖ ²ÖŸÖÖ‡‹ … ׯ֙ËüµÖæ™ü¸üß ÝÖÏÓ×£Ö ÃÖê ‡ÃÖÛêú ׸üÃÖÖ¾Ö ÛúÖê ÛúÖî®Ö ¯ÖÏê׸üŸÖ Ûú¸üŸÖÖ Æîü ? 2 
 State the role of Oxytocin in parturition. What triggers its release from the pituitary ? 
 
9. (a) ±úÃÖ»ÖÖë Ûêú ¯Öã™üßÛú¸üÞÖ Ûúß †Ö•Ö †Ö¾Ö¿µÖÛúŸÖÖ Æîü … ¤üÖê ÛúÖ¸üÞÖ ²ÖŸÖÖ‡‹ … 
 (b) ×®Ö´®Ö×»Ö×ÜÖŸÖ ´Öë ÃÖê †»Ö¾ÖÞÖ •Ö»ÖßµÖ ´Ö”û»Öß †Öî¸ü ÃÖ´Öã¦üß ´Ö”û»Öß ¯ÖÆü“ÖÖ×®Ö‹ … 
  —ÖàÝÖÖ, Ûêú™ü»ÖÖ, ´ÖîÛêú¸ü»Ö, »ÖÖò²ÃÖ™ü¸ü 2 
 (a) “Fortification of crops is the need of the hour.” Give two reasons. 
 (b) Select one fresh-water and one marine fish from the following : 
   Prawn; Catla; Mackerel; Lobster 
 
10. ¯Ö¸üßõÖÖ£ÖÔ ÛÎúÖòÃÖ (ÃÖÓÛú¸üÞÖ) ÃÖê ‹Ûú ¾µÖ×™ü Ûêú •Öß®Ö ¯ÖϺþ¯Ö ÛúÖ ×®Ö¬ÖÖÔ¸üÞÖ Ûú¸ü®Öê ´Öë ÛîúÃÖê ´Ö¤ü¤ü ×´Ö»ÖŸÖß Æîü ? 2 
†£Ö¾ÖÖ 
 ›üß.‹®Ö.‹. ²ÖÆãüºþ¯ÖŸÖÖ Ûêú ¤üÖê †®Öã¯ÖϵÖÖêÝÖ ×»Ö×ÜÖ‹ … 
 How does a test cross help to determine the genotype of an individual ? 
             OR 
 Mention two applications of DNA polymorphism. 
57/2/2 4  
ÜÖÞ›ü – ÝÖ 
SECTION – C 
 
11. ¯ÖÏןֲÖÓ¬Ö®Ö ‹Ó›üÖꮵÖæ׌»Ö‹ê•ÖÌ †Öî¸ü ‹Ûú ×¾Ö»ÖÖê´ÖÖ®ÖãÛÎú´Öß ®µÖæ׌»ÖµÖÖê™üÖ‡›ü †®ÖãÛÎú´Ö Ûêú ²Öß“Ö ÃÖÓ²ÖÓ¬Ö Ûúß ¾µÖÖܵÖÖ ˆ¤üÖÆü¸üÞÖ 
ÃÖ×ÆüŸÖ Ûúßו֋ …  3 
 Explain with the help of an example the relationship between restriction endonuclease 
and a palindromic nucleotide sequence. 
 
12. ³ÖÏæÞÖßµÖ †¾ÖãÖÖ ÛúÖ ®ÖÖ´ÖÖÓ×ÛúŸÖ †Ö¸êüÜÖ ²Ö®ÖÖ‡‹ •ÖÖê áÖß Ûêú ÝÖ³ÖÖÔ¿ÖµÖ Ûêú ³Öߟָü †ÓŸÖ¸üÖì×¯ÖŸÖ ÆüÖê •ÖÖŸÖÖ Æîü … ¤üÖê ®ÖÖ´ÖÖÓ×ÛúŸÖ 
³ÖÖÝÖÖë Ûêú ÛúÖµÖÔ ²ÖŸÖÖ‡‹ … 3 
 Draw a labelled diagram of the embryonic stage that gets implanted in the human 
uterus. State the functions of the two parts labelled. 
  
13. (a) †Öê¯Öê׸ü®Ö-ÆüÖ»›êü®Ö ¯Ö׸üÛú»¯Ö®ÖÖ ²ÖŸÖÖ‡‹ … 
 (b) ‹ÃÖ.‹»Ö. ×´Ö»Ö¸ü «üÖ¸üÖ ×Ûú‹ ÝÖ‹ ¯ÖϵÖÖêÝÖ ®Öê ‡ÃÖÛúÖ ÃÖ´Ö£ÖÔ®Ö ×ÛúÃÖ ¯ÖÏÛúÖ¸ü ×ÛúµÖÖ ? 3 
 (a) State Oparin-Haldane’s hypothesis. 
 (b) How does S.L. Miller’s experiment supports it ? 
 
14. (a) ‹Ûú ¯Ö׸ü¯ÖŒ¾Ö 7-ÛúÖê׿ÖÛúÖ ŸÖ£ÖÖ 8-®µÖæ׌»ÖµÖÃÖ ¾ÖÖ»Öê ³ÖÏæÞÖ-ÛúÖê¿Ö ÛúÖ ®ÖÖ´ÖÖÓ×ÛúŸÖ †Ö¸êüÜÖ ²Ö®ÖÖ‡‹ … 
 (b) ³ÖÏæÞÖ-ÛúÖê¿Ö Ûúß ÛúÖî®Ö ÃÖß ‹Ûú ÛúÖê׿ÖÛúÖ ¤üÖêÆü¸êü ×®ÖÂÖê“Ö®Ö Ûêú ²ÖÖ¤ü ‹Ó›üÖêïִÖÔ ²Ö®ÖÖŸÖß Æîü ? 3 
 (a) Draw a labelled sketch of a mature 7-celled, 8-nucleate embryo-sac. 
 (b) Which one of the cell in an embryo-sac produce endosperm after double 
fertilization ?  
  
15. •Öî¾Ö ×¾Ö×¾Ö¬ÖŸÖÖ ÃÖÓ¸üõÖÞÖ Ûêú ÃÖ´Ö£ÖÔ®Ö ´Öë ÃÖÓÛúßÞÖÔŸÖ: ˆ¯ÖµÖÖêÝÖß ŸÖÛÔú פü‹ •ÖÖŸÖê Æïü … ‡ÃÖß ˆ§êü¿µÖ Ûêú ÃÖ´Ö£ÖÔ®Ö ´Öë פü‹ •ÖÖ®Öê 
¾ÖÖ»Öê ¤üÖê †®µÖ ŸÖÛúÖí Ûúß ³Öß ¾µÖÖܵÖÖ Ûúßו֋ … 3 
 Narrowly utilitarian arguments are put forth in support of biodiversity conservation. 
Explain the other two arguments that are put forth in support of the same cause.  
Page 5


57/2/2 1 [P.T.O. 
 
 
 
 
¸üÖê»Ö ®ÖÓ. 
Roll No.  
 
 
 
•Öß¾Ö ×¾Ö–ÖÖ®Ö (ÃÖî¨üÖ×®ŸÖÛú) 
BIOLOGY (Theory)  
×®Ö¬ÖÖÔ׸üŸÖ ÃÖ´ÖµÖ  :    3 ‘ÖÓ™êü †×¬ÖÛúŸÖ´Ö †ÓÛú  : 70 
Time allowed : 3 hours Maximum Marks : 70 
 
ÃÖÖ´ÖÖ®µÖ ×®Ö¤ìü¿Ö    : : : :   
    (i) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¯ÖÖÑ“Ö ÜÖÞ›üÖë ´Öë 26 ¯ÖÏ¿®Ö פü‹ ÝÖ‹ Æïü … ÃÖ³Öß ¯ÖÏ¿®Ö †×®Ö¾ÖÖµÖÔ Æïü … 
 (ii) ÜÖÞ›ü – Ûú ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 1 ÃÖê 5 †×ŸÖ »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö Æïü … ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ‹Ûú †ÓÛú ÛúÖ Æîü …  
 (iii) ÜÖÞ›ü – ÜÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 6 ÃÖê 10 »Ö‘Öã-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö I ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¤üÖê †ÓÛúÖë ÛúÖ Æîü …  
 (iv) ÜÖÞ›ü – ÝÖ ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 11 ÃÖê 22 »Ö‘Öã-ˆ¢Ö¸üßµÖ ¯ÖÏ¿®Ö II ¯ÖÏÛúÖ¸ü Ûêú Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ŸÖß®Ö †ÓÛúÖë ÛúÖ Æîü …  
 (v) ÜÖÞ›ü – ‘Ö ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 23 ´Öæ»µÖ †Ö¬ÖÖ׸üŸÖ ¯ÖÏ¿®Ö “ÖÖ¸ü †ÓÛúÖë ÛúÖ Æîü …  
 (vi) ÜÖÞ›ü – ’û  ´Öë ¯ÖÏ¿®Ö ÃÖÓܵÖÖ 24 ÃÖê 26 ¤üß‘ÖÔ-ˆ¢Ö¸üßµÖü ¯ÖÏ¿®Ö Æïü, ¯ÖÏŸµÖêÛú ¯ÖÏ¿®Ö ¯ÖÖÑ“Ö †ÓÛúÖë ÛúÖ Æîü …  
 (vii) ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ÃÖ´ÖÝÖÏ ¯Ö¸ü ÛúÖê‡Ô ×¾ÖÛú»¯Ö ®ÖÆüà Æîü, ×±ú¸ü ³Öß ¤üÖê †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú ¯ÖÏ¿®Ö ´Öë, ŸÖß®Ö †ÓÛúÖë ¾ÖÖ»Öê ‹Ûú 
¯ÖÏ¿®Ö ´Öë †Öî¸ü ¯ÖÖÑ“Ö †ÓÛúÖë ¾ÖÖ»Öê ÃÖ³Öß ŸÖß®ÖÖë ¯ÖÏ¿®ÖÖë ´Öë ³Öߟָüß “ÖµÖ®Ö-×¾ÖÛú»¯Ö פü‹ ÝÖ‹ Æïü … ¯ÖÏŸµÖêÛú ¯Ö¸üßõÖÖ£Öá ÛúÖê 
‹êÃÖê ¯ÖÏ¿®ÖÖë Ûêú ¤üÖê ×¾ÖÛú»¯ÖÖë ´Öë ÃÖê ÛúÖê‡Ô ‹Ûú ¯ÖÏ¿®Ö Æü»Ö Ûú¸ü®ÖÖ Æîü …  
 Series : ONS/2 
57/2/2
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ´ÖãצüŸÖ ¯Öéšü 8 Æïü … 
• ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë ¤üÖ×Æü®Öê ÆüÖ£Ö Ûúß †Öê¸ü פü‹ ÝÖ‹ ÛúÖê›ü ®Ö´²Ö¸ü ÛúÖê ”ûÖ¡Ö ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü ¯Ö¸ü ×»ÖÜÖë …  
• Ûéú¯ÖµÖÖ •ÖÖÑ“Ö Ûú¸ü »Öë ×Ûú ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ´Öë 26 ¯ÖÏ¿®Ö Æïü …  
• Ûéú¯ÖµÖÖ ¯ÖÏ¿®Ö ÛúÖ ˆ¢Ö¸ü ×»ÖÜÖ®ÖÖ ¿Öãºþ Ûú¸ü®Öê ÃÖê ¯ÖÆü»Öê, ¯ÖÏ¿®Ö ÛúÖ ÛÎú´ÖÖÓÛú †¾Ö¿µÖ ×»ÖÜÖë …  
• ‡ÃÖ ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌü®Öê Ûêú ×»Ö‹ 15 ×´Ö®Ö™ü ÛúÖ ÃÖ´ÖµÖ ×¤üµÖÖ ÝÖµÖÖ Æîü … ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖ ×¾ÖŸÖ¸üÞÖ ¯Öæ¾ÖÖÔÆËü®Ö ´Öë 10.15 ²Ö•Öê 
×ÛúµÖÖ •ÖÖµÖêÝÖÖ … 10.15 ²Ö•Öê ÃÖê 10.30 ²Ö•Öê ŸÖÛú ”ûÖ¡Ö Ûêú¾Ö»Ö ¯ÖÏ¿®Ö-¯Ö¡Ö ÛúÖê ¯ÖœÌëüÝÖê †Öî¸ü ‡ÃÖ †¾Ö×¬Ö Ûêú ¤üÖî¸üÖ®Ö ¾Öê 
ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ ¯Ö¸ü ÛúÖê‡Ô ˆ¢Ö¸ü ®ÖÆüà ×»ÖÜÖëÝÖê …  
• Please check that this question paper contains 8 printed pages. 
• Code number given on the right hand side of the question paper should be written on the 
title page of the answer-book by the candidate. 
• Please check that this question paper contains 26 questions. 
• Please write down the Serial Number of the question before attempting it. 
• 15 minute time has been allotted to read this question paper. The question paper will be 
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the 
question paper only and will not write any answer on the answer-book during this period. 
ÛúÖê›ü ®ÖÓ. 
Code No.  
    
¯Ö¸üßõÖÖ£Öá ÛúÖê›ü ÛúÖê ˆ¢Ö¸ü-¯Öã×ßÖÛúÖ Ûêú ´ÖãÜÖ-¯Öéšü 
¯Ö¸ü †¾Ö¿µÖ ×»ÖÜÖë … 
Candidates must write the Code on 
the title page of the answer-book. 
 
SET – 2 
57/2/2 2  
General Instructions :   
 (i) There are a total of 26 questions and five sections in the question paper.                     
All questions are compulsory. 
 (ii) Section A contains questions number 1 to 5, Very Short Answer type questions of 
one mark each. 
 (iii) Section B contains questions number 6 to 10, Short Answer type-I questions of two 
marks each. 
 (iv) Section C contains questions 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 questions 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.  
 
ÜÖÞ›ü – Ûú 
SECTION – A 
1. ×ÛúÃÖß Ã¯Öß¿Öß•ÖÌ Ûêú ×»Ö‹ ¯ÖÏÛéú×ŸÖ Ûúß ¾ÖÆü®Ö õÖ´ÖŸÖÖ ×ÛúÃÖ ²ÖÖŸÖ ÛúÖ ÃÖÓÛêúŸÖ ¤êüŸÖß Æîü ? 1 
 What does nature’s carrying capacity for a species indicate ? 
  
2. ‹Ûú ÃÖÓפüÝ¬Ö AIDS Ûêú ¸üÖêÝÖß ´Öë HIV ÛúÖ ¯ÖŸÖÖ »ÖÝÖÖ®Öê Ûêú ×»Ö‹ †Ö×Þ¾ÖÛú ®Öî¤üÖ×®ÖÛúú ×ÛÎúµÖÖ×¾Ö×¬Ö ÛúÖ ÃÖã—ÖÖ¾Ö      
¤üßו֋ …   1 
 Suggest a molecular diagnostic procedure that detects HIV in a suspected AIDS patient.  
 
3. ¤üÖê •ÖÓŸÖã†Öë Ûêú ®ÖÖ´Ö ²ÖŸÖÖ‡‹ וִ֮Öë ´Ö¤ü “ÖÛÎú ¯ÖϤüÙ¿ÖŸÖ ÆüÖêŸÖÖ Æîü … 1 
 Name two animals that exhibit Oestrus cycle. 
 
4. ‹Ûú ‹ŒÃÖÖò®Ö ÃÖê ‹Ûú ‡®™ÒüÖò®Ö ´Öë ³Öê¤ü Ûú¸ü®Öê Ûêú ×»Ö‹ ‹Ûú †ÓŸÖ¸ü ²ÖŸÖÖ‡‹ … 1 
 Mention one difference to distinguish an exon from an intron. 
 
5. ˆŸ¯Ö׸ü¾ÖŸÖÔ•Ö®Ö ŒµÖÖ ÆüÖêŸÖÖ Æîü ? ×ÛúÃÖß ³ÖÖîןÖÛú ÛúÖ¸üÛú ÛúÖ ®ÖÖ´Ö ²ÖŸÖÖ‡‹ •ÖÖê ˆŸ¯Ö׸ü¾ÖŸÖÔ•Ö®Ö ÆüÖê ÃÖÛúŸÖÖ Æîü … 1 
 What is a Mutagen ? Name a physical factor that can be a Mutagen.  
57/2/2 3 [P.T.O. 
ÜÖÞ›ü – ÜÖ 
SECTION – B 
 
6. Æü´ÖÖ¸êü ¤êü¿Ö ´Öë E-†¾Ö׿Ö™üÖë ÛúÖ ×®Ö¯Ö™üÖ®Ö ×ÛúÃÖ ¯ÖÏÛúÖ¸ü ×ÛúµÖÖ •ÖÖŸÖÖ Æîü ? ‡ÃÖ †¾Ö׿Ö™ü Ûêú ×®Ö¯Ö™üÖ®Ö ÛúÖ ÃÖÆüß ŸÖ¸üßÛúÖ 
²ÖŸÖÖ‡‹ …   2 
 How e-wastes are being handled in our country ?  Write the correct solution for treating 
this waste. 
 
7. ÃÖÓÛú™üÖ¯Ö®®Ö •Öî¾Ö ×¾Ö×¾Ö¬ÖŸÖÖ Ûêú ÃÖÓ¸üõÖÞÖ Ûêú ×»Ö‹ “ÖÖ¸ü ˆ®®ÖŸÖ þÖ-ãÖÖ®Öê ×¾Ö׬ֵÖÖë ÛúÖ ÃÖã—ÖÖ¾Ö ¤üßו֋ … 2 
 Suggest four advanced ex-situ methods to conserve threatened biodiversity. 
 
8. ¯ÖÏÃÖ¾Ö ´Öë †ÖòŒÃÖß™üÖê×ÃÖ®Ö Ûúß ³Öæ×´ÖÛúÖ ²ÖŸÖÖ‡‹ … ׯ֙ËüµÖæ™ü¸üß ÝÖÏÓ×£Ö ÃÖê ‡ÃÖÛêú ׸üÃÖÖ¾Ö ÛúÖê ÛúÖî®Ö ¯ÖÏê׸üŸÖ Ûú¸üŸÖÖ Æîü ? 2 
 State the role of Oxytocin in parturition. What triggers its release from the pituitary ? 
 
9. (a) ±úÃÖ»ÖÖë Ûêú ¯Öã™üßÛú¸üÞÖ Ûúß †Ö•Ö †Ö¾Ö¿µÖÛúŸÖÖ Æîü … ¤üÖê ÛúÖ¸üÞÖ ²ÖŸÖÖ‡‹ … 
 (b) ×®Ö´®Ö×»Ö×ÜÖŸÖ ´Öë ÃÖê †»Ö¾ÖÞÖ •Ö»ÖßµÖ ´Ö”û»Öß †Öî¸ü ÃÖ´Öã¦üß ´Ö”û»Öß ¯ÖÆü“ÖÖ×®Ö‹ … 
  —ÖàÝÖÖ, Ûêú™ü»ÖÖ, ´ÖîÛêú¸ü»Ö, »ÖÖò²ÃÖ™ü¸ü 2 
 (a) “Fortification of crops is the need of the hour.” Give two reasons. 
 (b) Select one fresh-water and one marine fish from the following : 
   Prawn; Catla; Mackerel; Lobster 
 
10. ¯Ö¸üßõÖÖ£ÖÔ ÛÎúÖòÃÖ (ÃÖÓÛú¸üÞÖ) ÃÖê ‹Ûú ¾µÖ×™ü Ûêú •Öß®Ö ¯ÖϺþ¯Ö ÛúÖ ×®Ö¬ÖÖÔ¸üÞÖ Ûú¸ü®Öê ´Öë ÛîúÃÖê ´Ö¤ü¤ü ×´Ö»ÖŸÖß Æîü ? 2 
†£Ö¾ÖÖ 
 ›üß.‹®Ö.‹. ²ÖÆãüºþ¯ÖŸÖÖ Ûêú ¤üÖê †®Öã¯ÖϵÖÖêÝÖ ×»Ö×ÜÖ‹ … 
 How does a test cross help to determine the genotype of an individual ? 
             OR 
 Mention two applications of DNA polymorphism. 
57/2/2 4  
ÜÖÞ›ü – ÝÖ 
SECTION – C 
 
11. ¯ÖÏןֲÖÓ¬Ö®Ö ‹Ó›üÖꮵÖæ׌»Ö‹ê•ÖÌ †Öî¸ü ‹Ûú ×¾Ö»ÖÖê´ÖÖ®ÖãÛÎú´Öß ®µÖæ׌»ÖµÖÖê™üÖ‡›ü †®ÖãÛÎú´Ö Ûêú ²Öß“Ö ÃÖÓ²ÖÓ¬Ö Ûúß ¾µÖÖܵÖÖ ˆ¤üÖÆü¸üÞÖ 
ÃÖ×ÆüŸÖ Ûúßו֋ …  3 
 Explain with the help of an example the relationship between restriction endonuclease 
and a palindromic nucleotide sequence. 
 
12. ³ÖÏæÞÖßµÖ †¾ÖãÖÖ ÛúÖ ®ÖÖ´ÖÖÓ×ÛúŸÖ †Ö¸êüÜÖ ²Ö®ÖÖ‡‹ •ÖÖê áÖß Ûêú ÝÖ³ÖÖÔ¿ÖµÖ Ûêú ³Öߟָü †ÓŸÖ¸üÖì×¯ÖŸÖ ÆüÖê •ÖÖŸÖÖ Æîü … ¤üÖê ®ÖÖ´ÖÖÓ×ÛúŸÖ 
³ÖÖÝÖÖë Ûêú ÛúÖµÖÔ ²ÖŸÖÖ‡‹ … 3 
 Draw a labelled diagram of the embryonic stage that gets implanted in the human 
uterus. State the functions of the two parts labelled. 
  
13. (a) †Öê¯Öê׸ü®Ö-ÆüÖ»›êü®Ö ¯Ö׸üÛú»¯Ö®ÖÖ ²ÖŸÖÖ‡‹ … 
 (b) ‹ÃÖ.‹»Ö. ×´Ö»Ö¸ü «üÖ¸üÖ ×Ûú‹ ÝÖ‹ ¯ÖϵÖÖêÝÖ ®Öê ‡ÃÖÛúÖ ÃÖ´Ö£ÖÔ®Ö ×ÛúÃÖ ¯ÖÏÛúÖ¸ü ×ÛúµÖÖ ? 3 
 (a) State Oparin-Haldane’s hypothesis. 
 (b) How does S.L. Miller’s experiment supports it ? 
 
14. (a) ‹Ûú ¯Ö׸ü¯ÖŒ¾Ö 7-ÛúÖê׿ÖÛúÖ ŸÖ£ÖÖ 8-®µÖæ׌»ÖµÖÃÖ ¾ÖÖ»Öê ³ÖÏæÞÖ-ÛúÖê¿Ö ÛúÖ ®ÖÖ´ÖÖÓ×ÛúŸÖ †Ö¸êüÜÖ ²Ö®ÖÖ‡‹ … 
 (b) ³ÖÏæÞÖ-ÛúÖê¿Ö Ûúß ÛúÖî®Ö ÃÖß ‹Ûú ÛúÖê׿ÖÛúÖ ¤üÖêÆü¸êü ×®ÖÂÖê“Ö®Ö Ûêú ²ÖÖ¤ü ‹Ó›üÖêïִÖÔ ²Ö®ÖÖŸÖß Æîü ? 3 
 (a) Draw a labelled sketch of a mature 7-celled, 8-nucleate embryo-sac. 
 (b) Which one of the cell in an embryo-sac produce endosperm after double 
fertilization ?  
  
15. •Öî¾Ö ×¾Ö×¾Ö¬ÖŸÖÖ ÃÖÓ¸üõÖÞÖ Ûêú ÃÖ´Ö£ÖÔ®Ö ´Öë ÃÖÓÛúßÞÖÔŸÖ: ˆ¯ÖµÖÖêÝÖß ŸÖÛÔú פü‹ •ÖÖŸÖê Æïü … ‡ÃÖß ˆ§êü¿µÖ Ûêú ÃÖ´Ö£ÖÔ®Ö ´Öë פü‹ •ÖÖ®Öê 
¾ÖÖ»Öê ¤üÖê †®µÖ ŸÖÛúÖí Ûúß ³Öß ¾µÖÖܵÖÖ Ûúßו֋ … 3 
 Narrowly utilitarian arguments are put forth in support of biodiversity conservation. 
Explain the other two arguments that are put forth in support of the same cause.  
57/2/2 5 [P.T.O. 
16. ÃÖ´Öã¦ü ´Öë •Öß¾ÖÃÖÓÆü×ŸÖ Ûêú ׯָîü×´Ö›ü ‹¾ÖÓ ‰ú•ÖÖÔ Ûêú ׯָîü×´Ö›ü Ûêú †Ö¸êüÜÖ ²Ö®ÖÖ‡‹ … ²Ö®ÖÖ‹ ÝÖ‹ ׯָîü×´Ö›üÖë Ûêú ¯ÖÏÛúÖ¸üÖë ¯Ö¸ü 
†¯Ö®Öê ×¾Ö“ÖÖ¸ü ¯ÖÏÛú™ü Ûúßו֋ … 3 
†£Ö¾ÖÖ 
 (a) ×®Ö´®Ö×»Ö×ÜÖŸÖ ÝÖÏß®ÖÆüÖˆÃÖ ÝÖîÃÖÖë ÛúÖê ˆ®ÖÛêú ÃÖÛú»Ö ¾Öî׿¾ÖÛú ‰ú´ÖÞÖ ´Öë †Ö¯Öê×õÖÛú µÖÖêÝÖ¤üÖ®Ö Ûêú ¾Öéרü´ÖÖ®Ö ÛÎú´Ö ´Öë 
×»Ö×ÜÖ‹ : 
   N
2
O; CFC; CO
2
; C
2
H
4
. 
 (b) ¾Öî׿¾ÖÛú ‰ú´ÖÞÖ ÛúÖ ¬ÖÐã¾ÖßµÖ ²Ö±úá»Öß “ÖÖê×™üµÖÖë ¯Ö¸ü ŒµÖÖ ¯ÖϳÖÖ¾Ö ¯Ö›ÌüŸÖÖ Æîü ? ‡ÃÖÛêú ÃÖÓ³ÖÖ¾Öß ¯ÖÖ׸ü×ãÖןÖÛúßµÖ ¯ÖϳÖÖ¾Ö 
Ûúß “Ö“ÖÖÔ Ûúßו֋ … 
 Draw a pyramid of biomass and pyramid of energy in sea. Give your comments on the 
type of pyramids drawn. 
OR 
 (a) Rearrange the following greenhouse gases in increasing order of their relative 
contribution to the total global warming :  
   N
2
O; CFC; CO
2
; C
2
H
4
. 
 (b) What is the effect of global warming on polar ice-caps ? Comment on its possible 
ecological impact. 
  
17. (a) •Öß®Ö-ˆ¯Ö“ÖÖ¸ü ŒµÖÖ ÆüÖêŸÖÖ Æîü ? 
 (b) ˆÃÖ ×ÛÎúµÖÖ×¾Ö×¬Ö ÛúÖ ¾ÖÞÖÔ®Ö Ûúßו֋ וÖÃÖÛêú «üÖ¸üÖ ‡ÃÖ ¯ÖÏÛúÖ¸ü Ûêú ×ÛúÃÖß ¸üÖêÝÖ ÛúÖ Ã£ÖÖµÖß ºþ¯Ö ÃÖê ˆ¯Ö“ÖÖ¸ü ×ÛúµÖÖ 
•ÖÖ ÃÖÛúŸÖÖ Æîü … ‡ÃÖ ¸üÖêÝÖ ÛúÖ ®ÖÖ´Ö ×»Ö×ÜÖ‹ … 3 
 (a) What is Gene therapy ? 
 (b) Describe the procedure of such a therapy that could be a permanent cure for a 
disease. Name the disease. 
 
18. ´ÖÖ®Ö¾Ö ¹ý׬ָü-¾ÖÝÖÔ ²ÖÆãü×¾ÖÛú»¯ÖŸÖÖ †Öî¸ü ÃÖÆü¯ÖϳÖÖ×¾ÖŸÖÖ ÛúÖ ‹Ûú †“”ûÖ ˆ¤üÖÆü¸üÞÖ Æîü … µÖã׌ŸÖ ÃÖÓÝÖŸÖŸÖÖ ²ÖŸÖÖ‡‹ … 3 
 Human blood group is a good example of multiple allelism and co-dominance. Justify.  
 
19. ×ÛúÃÖß ¯ÖÆüÖ›Ìüß Ã£ÖÖ®Ö Ûúß ÃÖî¸ü Ûú¸ü®Öê ¯Ö¸ü †Ö¯ÖÛêú ‹Ûú ×´Ö¡Ö Ûúß ŸÖ×²ÖµÖŸÖ †“ÖÖ®ÖÛú ÜÖ¸üÖ²Ö ÆüÖê ÝÖµÖß †Öî¸ü ˆÃÖê ²Öî“Öê®Öß 
´ÖÆüÃÖæÃÖ ÆüÖê®Öê »ÖÝÖß … 
 (a) ÛúÖê‡Ô ‹êÃÖê ¤üÖê ¸üÖêÝÖ »ÖõÖÞÖ ²ÖŸÖÖ‡‹ וÖÃÖÛêú ÛúÖ¸üÞÖ µÖÆü ‹ê»Ö•Öá ÆüÖê ÝÖµÖß … 
 (b) ×ÛúÃÖß ‹ê»Ö•ÖÔ®Ö Ûêú ¯ÖÏ×ŸÖ ÆüÖê®Öê ¾ÖÖ»Öß ¿Ö¸ü߸ü Ûúß †®Öã×ÛÎúµÖÖ Ûúß ¾µÖÖܵÖÖ Ûúßו֋ … 
 (c) ŸÖÖŸÛúÖ×»ÖÛú †Ö¸üÖ´Ö ¤êü®Öê Ûêú ×»Ö‹ ×Ûú®Æüà ¤üÖê †ÖîÂÖ׬ֵÖÖë Ûêú ®ÖÖ´Ö ²ÖŸÖÖ‡‹ … 3 
 On a visit to a Hill station, one of your friend suddenly became unwell and felt uneasy. 
 (a) List two symptoms you would look for to term it to be due to allergy. 
 (b) Explain the response of the body to an allergen. 
 (c) Name two drugs that can be recommended for immediate relief.