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ICSE Class 10 Semester 1 Biology Exam 2021-22 was conducted on December 15. Download the PDF of the answer key here and check the detailed question paper analysis of Biology here.
ICSE Class 10 Semester 1 exam for Biology was conducted on December 15, 2021, in the morning shift. The exam started at 11 AM and was conducted for one hour, being over at 12 PM. The exam was conducted for a total of 40 marks. There were a total of 8 questions with sub-questions and all the questions were compulsory. Each question carried 5 marks and was of multiple choice types.
The following page will overview ICSE Class 10 Semester 1 Biology Answer Key 2021-22 along with the detailed question paper analysis.
ICSE Class 10 Semester 1 Biology Answer Key 2021-22
We have updated here ICSE Class 10 Semester 1 Biology Answer Key 2021-22 for all the questions:
| Ques.1 A: (b) Photophosphorylation | Ques.3 A: (b) Nicotinamide Adenine Dinucleotide Phosphate | Ques.5 A: (b) Around the Centrioles in Animal Cells | Ques.7 i: (d) To show that carbon dioxide is necessary for Photosynthesis |
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| Ques.1 B: (c) Lenticels | Ques.3 B: (a) Create a suction force for absorption of water from the soil | Ques.5 B: (d) Around the stoma | Ques.7 ii: (b) Air inside the flask is free of carbon dioxide |
Ques.1 C: (a) Root Pressure | Ques.3 C: (d) 3:1 | Ques.5 C: (a) Conducts waters and minerals in leaves | Ques.7 iii: (a) Sodium Hydroxide |
| Ques.1 D: (d) Recessive | Ques.3 D: (a) Xylem | Ques.5 D: (c) Found only in animal cells | Ques.7 iv: (a) Leaf 1 turns brown, leaf 3 turns blue black |
| Ques.1 E: (e) 44 + XX Chromosomes | Ques.3 E: (c) S-phase | Ques.5 E : (c) Present on Chromosomes | Ques.7 v: (c) The plants should be placed in the dark for 24 hours to destarch the leaves |
| Ques.2 A: (d) Telophase | Ques.4 A: (a) It is the division of nucleus during cell division | Ques.6 A : (c) Gives rigidity and shapes to plant cell | Ques.8 i: (a) To prove that more transpiration occurs from the lower surface of a decot leaves |
| Ques.2 B: (e) Pi (π) | Ques.4 B: (b) out of a pair of contrasting alleles present together, only the dominant allele is able to express itself while recessive remains suppressed. | Ques.6 B: (a) It is the point of attachment of two sister chromatids | Ques.8 ii: (b) Blue |
| Ques.2 C: (b) Hypertonic | Ques.4 C: (a) It is a sudden change in one or more genes in an organism's cells which is heritable | Ques.6 C: (b) Reduce transpiration | Ques.8 iii: (c) Upper Surface: less pink, lower surface: more pink |
| Ques.2 D: (a) Thymine | Ques.4 D: (d) It is the synthesis of glucose from carbon dioxide and water by green plants using light energy | Ques.6 D: (d) Guttation | Ques.8 iv: (d) Narrow Leaves, Fewer Stomata |
| Ques.2 E : (c) Genes | Ques.4 E : (e) It is the loss of water in the form of water vapour from the aerial parts of the plants | Ques.6 E: (a) Site of light independent phase | Ques.8 v: (a) High humidity in the air and low temperature |
| ICSE Class 10 Semester 1 Biology Answer Key 2021-22: Download PDF |
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| ICSE Class 10 Semester 1 Answer Key 2021-22 (All Subjects) |
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ICSE Class 10 Semester 1 Biology Question Paper 2021-22
We will update here ICSE Class 10 Semester 1 Biology Question Paper 2021-22 shortly. Till then, stay tuned!
ICSE Class 10 Semester 1 Biology Question Paper Analysis 2021-22
You can check the detailed question paper analysis of ICSE Class 10 Semester 1 Biology here. As per the student's feedback, the overall difficulty level of the paper was easy. The students found diagram questions a bit tricky but the majority of the questions were easy. You can also share your feedback by clicking on the link below.
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Aspect | Analysis |
|---|---|
Overall Difficulty Level | Easy to Moderate |
Difficulty Level of Sentence Completion Questions | Easy to Moderate |
Difficulty Level of Definition Based Questions | Easy to Moderate |
Difficulty Level of Diagram Questions | Moderate to Difficult |
Expected No. of Good Attempts | 30-40 |
Was the Paper Time Consuming? | No |
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