CBSE Class 12 Biology HOTs Biodiversity

Refer to CBSE Class 12 Biology HOTs Biodiversity. We have provided exhaustive High Order Thinking Skills (HOTS) questions and answers for Class 12 Biology Biodiversity. Designed for the 2025-26 exam session, these expert-curated analytical questions help students master important concepts and stay aligned with the latest CBSE, NCERT, and KVS curriculum.

Biodiversity Class 12 Biology HOTS with Solutions

Practicing Class 12 Biology HOTS Questions is important for scoring high in Biology. Use the detailed answers provided below to improve your problem-solving speed and Class 12 exam readiness.

HOTS Questions and Answers for Class 12 Biology Biodiversity

 BIODIVERSITY

1 marks

Q.1) a) India has more than 50000 different strains of rice and 1000 varieties of mangoes.
 
        b) Western Ghats have a greater Amphibian diversity than the Eastern Ghats. What do you infer from the above two statements? 

Ans.1)  a) Genetic diversity       

            b) Species diversity

2 marks

Q.1

CBSE_Class_12_Biology_biodiversity_1 

Identify a,b,c and d in the above pie diagram showing global biodiversity of plants. 

Ans.1)  a) Angiosperms

            b) Algae 

            c) Fungi 

            d) Mosses

Q.2) Columbia located near the equator has nearly 1400 species of birds while new york at 41˚ N has 105 species and Greenland at 71˚ N has only 56 species.  Comment. 2

Ans.2) Latitudinal gradients in biodiversity. Biodiversity decreases as latitude increases .

           Biodiversity decreases as one move from tropics to equator.]

Q.3) Would the extinction of one insect pollinator affect the ecosystem? Explain 2 

Ans.3) Yes,  

It may lead to co-extinction of species  

In the case of a co-evolved plant-Pollinator Mutualism where extinction of one invariably Leads to the extinction of the other

Q.4) The species diversity of plants is much less than that of animals. What could be the reason for this and figure out how animals achieved greater diversifications? 2
 
Ans 4) Animals have greater mobility  Animals migrate to different environmental conditions and undergo adaptation
 
Q.5) Seeds of different genetic strains are kept for long periods in seed banks. Explain the conservative strategy involved in this process. 2
 
Ans.5) Ex-situ conservation They are preserved in viable and fertile condition for long periods using cryopresrvation techniques.
 
Q.6) Amazon forests are regarded are "Lungs of the Planet". Why? 2
 
Ans.6) Amazon forests have the greatest biodiversity in the world and harbour a large number of plant species which release large amount of oxygen into the atmosphere.
 
Q.7) National parks come under 'in situ' conservation while Zoological parks under 'exsitu' conservation. comment. 2

Ans.7) National parks- in situ- It is the practice of protecting the endangered species in their natural habitats either by protecting or by defending the species from predators.

Zoological parks- ex situ- the threatened species are taken out from their natural habitat and placed in special setting and given protection and special care.

Q.8) There are 34 biodiversity hot spots in the world. What are the criteria of selection of such hot spots? 2

Ans .8)   i) High level of species richness 

             ii) High degree of endemism

Q.9) Lantana & Eichornia are examples of two weeds. How do they affect the ecosystem? 2

Ans.9.These are examples of Alien species invasions. They threaten the indigenous species & lead to their extinction.

3 marks
 
Q.1) Biologists are not sure about how many prokaryotic species there might be. Give reasons.
 
Ans.1) i)The conventional taxonomic methods are not sufficient for identifying these microbial species
 
          ii)Many of the species cannot be cultured under laboratory conditions.
 
         iii) Biochemical and molecular biology techniques would put their diversity into millions.
 
Q.2) In an experiment, the slope of regression (z) is 0.2 and in another experiment the value obtained is 1.2. Explain the two situations in respect of species area relationships.

Ans.2) 0.2 is obtained in studies regardless of the taxonomic group or the region 1.2 is obtained if species area relationship is analysed among very large areas like the entire continents.

Q.3) Would Western Ghats ecosystems be less functional if one of its tree frog species is lost forever? Substantiate your answer in the light of hypothesis proposed by Paul Ehrlich.

Ans.3) According to the hypothesis proposed by Paul Ehrlich the "vivet popper hypothesis" each species is essential in the balance of nature. If one is lost that much imbalance is caused in the ecosystem.

Chapter 01 Sexual Reproduction In Flowering Plants
CBSE Class 12 Biology HOTs Sexual Reproduction In Flowering Plants
Chapter 02 Human Reproduction
CBSE Class 12 Biology HOTs Human Reproduction
Chapter 03 Reproductive Health
CBSE Class 12 Biology HOTs Reproductive Health
Chapter 04 Principles of Inheritance and Variation
CBSE Class 12 Biology HOTs Principles Of Inheritance And Variation
Chapter 05 Molecular Basis of Inheritance
CBSE Class 12 Biology HOTs Molecular Basis of Inheritance
Chapter 07 Human Health and Disease
CBSE Class 12 Biology HOTs Human Health and Disease
Chapter 08 Microbes In Human Welfare
CBSE Class 12 Biology HOTs Microbes In Human Welfare
Chapter 09 Biotechnology Principles and Processes
CBSE Class 12 Biology HOTs Biotechnology Principles and Processes
Chapter 10 Biotechnology and Its Application
CBSE Class 12 Biology HOTs Biotechnology And Its Applications
Chapter 11 Organisms and Populations
CBSE Class 12 Biology HOTs Organism And Population
Chapter 13 Biodiversity and Conservation
CBSE Class 12 Biology HOTs Biodiversity And Conservation

HOTS for Biodiversity Biology Class 12

Students can now practice Higher Order Thinking Skills (HOTS) questions for Biodiversity to prepare for their upcoming school exams. This study material follows the latest syllabus for Class 12 Biology released by CBSE. These solved questions will help you to understand about each topic and also answer difficult questions in your Biology test.

NCERT Based Analytical Questions for Biodiversity

Our expert teachers have created these Biology HOTS by referring to the official NCERT book for Class 12. These solved exercises are great for students who want to become experts in all important topics of the chapter. After attempting these challenging questions should also check their work with our teacher prepared solutions. For a complete understanding, you can also refer to our NCERT solutions for Class 12 Biology available on our website.

Master Biology for Better Marks

Regular practice of Class 12 HOTS will give you a stronger understanding of all concepts and also help you get more marks in your exams. We have also provided a variety of MCQ questions within these sets to help you easily cover all parts of the chapter. After solving these you should try our online Biology MCQ Test to check your speed. All the study resources on studiestoday.com are free and updated for the current academic year.

Where can I download the latest PDF for CBSE Class 12 Biology HOTs Biodiversity?

You can download the teacher-verified PDF for CBSE Class 12 Biology HOTs Biodiversity from StudiesToday.com. These questions have been prepared for Class 12 Biology to help students learn high-level application and analytical skills required for the 2025-26 exams.

Why are HOTS questions important for the 2026 CBSE exam pattern?

In the 2026 pattern, 50% of the marks are for competency-based questions. Our CBSE Class 12 Biology HOTs Biodiversity are to apply basic theory to real-world to help Class 12 students to solve case studies and assertion-reasoning questions in Biology.

How do CBSE Class 12 Biology HOTs Biodiversity differ from regular textbook questions?

Unlike direct questions that test memory, CBSE Class 12 Biology HOTs Biodiversity require out-of-the-box thinking as Class 12 Biology HOTS questions focus on understanding data and identifying logical errors.

What is the best way to solve Biology HOTS for Class 12?

After reading all conceots in Biology, practice CBSE Class 12 Biology HOTs Biodiversity by breaking down the problem into smaller logical steps.

Are solutions provided for Class 12 Biology HOTS questions?

Yes, we provide detailed, step-by-step solutions for CBSE Class 12 Biology HOTs Biodiversity. These solutions highlight the analytical reasoning and logical steps to help students prepare as per CBSE marking scheme.