CBSE Class 12 Biology Revision Worksheet Set E

CBSE Class 12 Biology Worksheet - Revision (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.

Q A Fill in the blanks using suitable words:

1 Replication of DNA takes place in __ to ____ direction.

2 AUG Codon codes for ______________.

3 ____ _____ and _______ are examples of nonsense codon..

4 Scientific name of a Fruitfly is __________________

5 Females having sex chromosome as XO is said to be suffering from _________ ________.

Q B Answer the following questions in brief:

1 Who is the father of Genetics?

2 What is the scientific name of the plant used to give out “Laws of inheritance”?

3 What is the phenotypic ratio of a dihybrid cross in F2 generation?

4 Name the pattern of inheritance where the genotypic and phenotypic ratio of a cross comes out to be same in F2 generation.

5 Name the disorder observed in a female, when one of her sex chromosome is missing.

6 What is the phenotypic ratio of a test cross?

7 Who gave an experimental proof of the fact that the DNA replication is semi conservative?

8 What is the number of chromosomes in a man suffering from Knilefelter’s syndrome?

Q C Define the following term

1 Parturition

2 Genetic codon

3 Homologous organs

Q D Answer the following questions in detail with the help of diagram.

1 Explain Hardy –Weinberg principle with the help of diagram showing operation of natural selection.

2 Explain the steps of protein synthesis

Please click the link below to download full pdf file for CBSE Class 12 Biology Worksheet - Revision (2).



Click to View or Download pdf file
Click for more Biology Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

Class 10 Boards Cancelled Class 12 postponed

Looking to the present situation of the pandemic and school closures, and also taking in account the safety and well-being of the students, it is decided as follows:   1. The Board Exams for Class XIIth to be held from May 4th to June, 14th, 2021 are hereby postponed....

CBSE Assessment Framework

The Central Board of Secondary Education (CBSE) today, announced a suggested competency-based assessment framework to strengthen India’s existing school education system for secondary level (classes 6-10) and improve the overall learning outcomes of students across...

ICSE Board Exams Cancelled

The ICSE (Class X) 2021 Examination: Given the present worsening situation of the Covid- 19 Pandemic in the country, the CISCE has decided to CANCEL the ICSE (Class X) 2021 Examination. The options given in the earlier Circular dated 16th April 2021, now stands...

Time management for CBSE students

The first thing to learn about Time Management is that time is theoretical so you can’t really manage it. What you do when you get into time management, is that you manage yourself. You decide what has to be done, when it must be done and how to do it in the stipulated...

Latest CBSE Syllabus for 2021 2022 PDF Download

Latest Syllabus for Class 12 for 2021 2022 Latest Syllabus for Class 11 for 2021 2022 Latest Syllabus for Class 10 for 2021 2022 Latest Syllabus for Class 9 for 2021 2022 CBSE has issued the latest syllabus for the academic year 2021 2022 which is applicable for all...

Studies Today