CBSE Class 12 Biology Revision Worksheet Set A

CBSE Class 12 Biology all chapters revision worksheets. CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers. 

1 Which individuals can be termed as clones? 

2 How do the following organisms reproduce: a) Paramoecium b) Penicillium? 

3 Which part of banana and ginger plants are used for vegetative propagation? 

4 In Bryophyllum, leaf margins show green structures. What are these? Name another plant having such structure.

5 What is the vital link between two generations? 

6 Give term for the condition in which a single organism possesses both sex organs. 

7 Why do hilly areas of Kerala, Karnataka and Tamil Nadu transform into blue Stretches that attracts many tourists?

8 Define ‘oestrus’ and ‘menstrual’ cycles. 

9 Differentiate between homogamete and heterogametes. 

10 What regulates the reproduction processes and the associated behavioral expressions in organisms?

11 Give any three differences between asexual and sexual reproduction. 

12 Enlist the changes that occur post- fertilization in plants. 

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