CBSE Class 12 Biology all chapters revision worksheets (2). 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 How does vegetative propagation take place in plant like Bryophyllum?
2 Name the two parts of a typical anther.
3 Name the primary sex organs in human male and female.
4 Why a ban has been imposed on amniocentesis?
5 Write the functions of Leydig cells and Sertoli Cells.
6 Differentiate between GIFT and ZIFT.
7 a) Name the layers of the uterus from outside to inside.
b) Write the name of the location where fertilization takes place in humans.
8 A typical pollen grain has two layers. Name them and mention its chemical composition.
9 Name the common asexual reproductive structure in
10 Explain the natural methods of preventing pregnancy.
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