CBSE Class 12 Biology Biodiversity and Conservation Assignment Set A

CBSE Class 12 Biology Biodiversity and Conservation Assignment Set A . Based on CBSE and NCERT guidelines. The students should read these basic concepts to gain perfection which will help him to get more marks in CBSE examination.



1. Habitat loss and fragmentation has caused severe damage to a particular type of ecosystem. Name it.

2. What trend is observed in respect of species diversity when we move from equator to poles?

3. Which region is considered as the one with highest biodiversity on earth? What is the name given to such region.forests?

4. Ecologists have discovered that value of lies in range of 0.1 to 0.2 regardless of taxonomic group or region. When will the slope of line steeper in species area relationship?

5. Define cryopreservation. Why is it useful in conserving biodiversity?

6. What is the reason for genetic variation shown by medicinal plant Rauwolfia vomitoria?

7. How many species of plants and animals have been described by IUCN in 2004? What is global species diversity according to Robert May?

8. Explain co-extinction with a suitable example.



1. Tropical Rain Forest.

2. In general, species diversity decreases as we move away from the equator towards poles.

3. Amazonian rain forests. They are also called the ‘Lungs of the planet’.

4. Slope of line is much steeper if one analyses the species¡Varea relationship among very large areas like entire continents.

5. Preserving a material in liquid nitrogen at – 196°C. It can be done to preserve threatened species in viable and fertile condition for long period.

6. Genetic variation might be in terms of potency and concentration of the active chemical reserpine produced by plant.


Please refer to attached file for CBSE Class 12 Biology Biodiversity and Conservation Assignment Set A



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

Procedure for correction in Name and Date of Birth

Procedure for correction in Name and Date of Birth in CBSE records Name Change: Applications regarding changes in name or surname of candidates will be considered provided the changes have been admitted by the Court of law and notified in the Government Gazette before...

CBSE Decision on Board Exam 2020

The Class 10 and 12 exams are cancelled, and results for both 10th and 12th would be declared by July 15 based on internal exams. CBSE Class 12 students would have the option to appear for the exams at a later date. CBSE has a scheme in which marks scored in past 3...

CBSE Reduced Syllabus Class 11 and 12

CBSE has announced major reduction in the syllabus for class 11 and class 12. There has been major changes too in the main syllabus for class 11 and 12. The prevailing health emergency in the country and at different parts of the world as well as the efforts to contain...

CBSE Reduced Syllabus Clarification

CBSE board has issued the following clarification relating to various news reports regarding reduction in syllabus and questions from the reduced syllabus during board exams. Please read below: It has come to notice of the Board through a section of media reports that...

Art Integrated Project work for classes 1 to 10

CBSE Board has decided to introduce Art-Integrated Project work for classes I to X to promote Art-Integrated Learning in schools to make teaching learning Competency-Based and joyful. As part of this, at least one Art-Integrated Project in each subject shall be taken...

Studies Today