ISC Class 12 Semester 1 Biology Answer Key 2021-22 (Available) – Download PDF & Check Analysis
ISC Class 12 Semester 1 Biology Exam 2021-22 has been conducted on December 3. Download the PDF of the answer key and check the detailed analysis of Semester 1 Biology.
ISC Class 12 Semester 1 Exams 2021-22 are underway, and the Biology exam has been conducted on December 3 from 2:00 PM to 3:30 PM. The question paper of Biology consists of 70 MCQs for 70 marks. The question paper consists of direct MCQs, assertion, match the following and comprehension-type questions. There is no internal choice, and the students are required to answer all the questions. On this page, you can download the PDF of the Semester 1 Biology answer key along with the detailed question paper analysis.
ISC Class 12 Semester 1 Biology Answer Key 2021-22
The PDF of ISC Class 12 Semester 1 Biology answer key 2021-22 has been updated. You can check the question-wise answers in the table below –
| 1 - A (The Inducer) | 21 - B (Heterogeneous nuclear Ribonucleic acid) | 41 - C (Assertion is true but the reason is false) |
| 2 - B (Hershey and Chase) | 22 - A (Intrauterine contraceptive device) | 42 - C (Assertion is true but the reason is false) |
| 3 - D (UAA, UAG, UGA) | 23 - C (Ernst Haeckel) | 43 - A (Both assertion and reason are true, and the reason is the correct explanation of the assertion) |
| 4 - B (50%) | 24 - D (Henking) | 44 - C (Assertion is true but the reason is false) |
| 5 - A (Test Cross) | 25 - C (Senescence) | 45 - C (Assertion is true but the reason is false.) |
| 6 - D (Birds) | 26 - B (Special proteins) | 46 -
|
| 7 - C (Four Months) | 27 - A (Ovary to the uterus) | 47 -
|
| 8 - A (Frog) | 28 - B (16) | 48 -
|
| 9 - C (100) | 29 - C (Progesterone) | 49 -
|
| 10 - A (57) | 30 - C (Klinefelter’s syndrome) | 50 -
|
| 11 - B (Pectocellulose) | 31 - B (3 billion) | - |
| 12 - A (Zona pellucida) | 32 - C (Gene flow) | - |
| 13 - D (In spermiogenesis, spermatozoa are formed; while in spermiation, spermatozoa are released from the Sertoli cells) | 33 - B (Saccharomyces cerevisiae) | - |
| 14 - B (Amniocentesis) | 34 - C (Mycorrhiza) | - |
| 15 - D (Cervical cap) | 35 - D (Perisperm represents the persistent endosperm) | - |
| 16 - D (Streptokinase) | 36 - C (Use and disuse of organs) | - |
| 17 - B (Dragonfly) | 37 - C (A – (ii), B – (iii), C – (i), D – (iv)) | - |
| 18 - C (2pq) | 38 - D (A – (iii), B – (i), C – (ii)) | - |
| 19 - A (small isolated population) | 39 - D (Apes) | - |
| 20 - D (Eyelids) | 40 - A (Ladybird beetles) | - |
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| ISC Class 12 Semester 1 Answer Key 2021-22 (All Subjects) |
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ISC Class 12 Semester 1 Biology Question Paper Analysis 2021-22
You can check the ISC Class 12 Semester 1 Biology question paper analysis in the table below. You can also share your feedback by clicking on the link below –
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Aspect | Analysis |
Overall Difficulty Level | Moderate to Easy |
Difficulty Level of Assertion Questions | Moderate to Difficult |
Expected Average No. of Good Attempts | 35+ |
| Expecetd No. of Very Good Attempts | 55+ |
Was the Paper Time-Consuming? | No |
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