Exam Tips: Understand concepts well, says Biology teacher Shahnawaz Ansari

Exam Tips: Understand concepts well, says Biology teacher Shahnawaz Ansari

CBSE class XII board examination 2019-2020: Biology

Staff ReporterUpdated: Sunday, February 23, 2020, 09:11 PM IST
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Biology | Imagesbazaar

Biology emphasises on the underlying principles that are common to animals and plants. Students are expected to understand discoveries and innovations in biology.

But despite understanding and studying throughout the year, students often fail to score well. This is because most students lose confidence and feel nervous in the examination hall. Biology teacher Shahnawaz Ansari shares following tips to help students score well. Excerpts

Skill-wise weightage

Remembering: Knowledge-based simple questions. They include knowing specific facts, terms, concepts, principles, or theories, identify, define, or recite, information: 10%

Understanding: It means comprehension, that is, to be familiar with meaning and to understand concepts. It also means to learn to interpret, compare, contrast, explain, paraphrase information: 30%

Application: Use abstract information in concrete situation, to apply knowledge to new situations, use given content to interpret a situation, provide an example, or solve a problem: 30%

Evaluation & Analysis: Classify, compare, contrast, or differentiate between different pieces of information, organise and/or integrate unique pieces of information from a variety of sources: 17%

Creating: Appraise, judge, and/or justify the value or worth of a decision or outcome, or to predict outcomes based on values: 13%

Exam pattern

Question paper has 4 sections of total 70 marks

• Section A consists of 5 questions of 1 mark each

• Section B consists of 7 questions of 2 marks each

• Section C consists of 8 questions of 3 marks each

• Section D consists of value-based 3 questions of 5 marks each

Marks allotted to each unit/chapter

Unit no. Name of unit Weightage

Unit – I Reproduction 14 marks

Unit – II Genetics and evolution 18 marks

Unit – III Biology and its application 14 marks

Unit – IV Biotechnology and its application 10 marks

Unit – V Ecology and environment 14 marks

How to prepare?

• Take good notes in class

• Create your own study material

• Have a positive attitude towards subject

• Practice drawing labelled diagrams

• Learn concepts from general to specific

• Break down complex words into roots

Important topics

(i) Sexual reproduction in flowering plants

(ii) Reproduction in humans

(iii) Mendel’s laws of inheritance

(iv) DNA structure

(v) Recombinant DNA technology

(vi) Environmental issues

(vii) Biodiversity and its applications

(viii) Human diseases

Important questions

(i) What measures as an individual? Would you take to reduce environmental pollution?

(ii) What is gene therapy? Illustrate using example of adenosine de aminase (ADA) deficiency?

(iii) Mention any two autosomal genetic disorders with their symptoms

(iv) What is parturition? Which hormones are involved in its induction?

(v) Draw a well-labelled diagram of antibody molecule

How to attempt?

Stay calm before exam

• Read all questions carefully

• Answer the easiest ones first

• Review your answers thoroughly

• Manage your time

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