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NCERT Exemplar Class 12 Biology Solutions - Chapter Wise Problems with Solutions

NCERT Exemplar Class 12 Biology Solutions - Chapter Wise Problems with Solutions

Edited By Safeer PP | Updated on Aug 05, 2022 04:44 PM IST | #CBSE Class 12th
Upcoming Event
CBSE Class 12th  Exam Date : 01 Jan' 2025 - 14 Feb' 2025

NCERT Exemplar Class 12 Biology solutions is covered in various concepts and principles of genetics, biodiversity, reproductive health, and microbes. The entire biology NCERT Syllabus is thorough and has crucial topics that if covered well, will help in higher education and in entrance exams. Also, from the CBSE 12 Board Exam point of view, biology is a scoring subject if prepared well. There are major concepts, diagrams, processes, and some new topics like Biotechnology that should be given special attention to. To make the chapters easy and also to learn how to solve the questions in the exam, understanding and observing the NCERT exemplar solutions for Class 12 Biology is highly crucial. We have a team of subject experts who have given thorough and detailed answers to each question mentioned in the main exercise.
Also, read - NCERT Solutions for Class 12

This Story also Contains
  1. NCERT Exemplar Class 12 Biology Chapter Wise Links
  2. NCERT Exemplar Class 12 Biology Solutions average Unit Wise Weightage
  3. Features and Benefits of NCERT Exemplar Class 12 Biology Solutions

NCERT Exemplar Class 12 Biology Chapter Wise Links

NCERT Exemplar Class 12 Biology Solutions average Unit Wise Weightage

The weightage given here is for the CBSE board exam. The mark distribution may vary slightly each year. Most of the questions are covered from Genetics and Reproduction. Questions from all the chapters of will be included in the exam. So for getting a good score, going through NCERT Exemplar Class 12 Biology Solutions will be beneficial.The unit wise distribution of marks is given in the following table

CBSE board exam-approximate unit-wise weightage:

Sl. No.

Name of Units

No. of questions

1

Reproduction

7

2

Genetics

7

3

Microbes and human welfare

4

4

Biotechnology and its applications

4

5

Ecology and environment

5

· Reproduction: in class 12th NCERT, the very initial chapters cover the reproduction-related chapter in both plants and animals. These chapters cover topics like reproductive systems in flowering plants, sexual and asexual reproduction, reproductive health in humans, etc.

· Genetics: one of the major parts of 12th biology is genetics as there are various principles, concepts, formulas, and laws to be understood under this. The syllabus covers genetic inheritance, genetic variations, DNA, RNA, replication, transcription, translation, amino acid, genetic flaws, and evolution. Understanding these topics, one will learn to create their base for higher studies in genetics.

· Diseases and microbes: learning about microbes, microbiology, their diversity, and their ecosystem can be highly helpful for those planning to pursue a future in medical science. The NCERT Exemplar solutions for class 12 Biology covers topics like human health, various communicable diseases, food production using microbes, microbial processes that are useful for humans, etc.

· Biotechnology: one of the most crucial and new topics that are covered in NCERT exemplar class 12 Biology solutions biotechnology. Biotechnology covers different aspects of combining biology with technology. It encapsulated topics like genetic recombination, genetically modified organisms, vaccines, biotechnology processes, etc.

· Ecosystem and biodiversity: NCERT exemplar class 12 Biology solutions covers, ecosystem, and population-related topics. These various topics are merged like an ecosystem, biodiversity, symbiotic and other relations, environment, bio conservations, etc.

Also, check NCERT Exemplar subject wise

Features and Benefits of NCERT Exemplar Class 12 Biology Solutions

Some of the features of NCERT exemplar Class 12 Biology solutions that make it highly useful to students are:

· Easy solutions: While solving questions or while understanding the topic, if the solutions are difficult to follow, then it becomes difficult for a student to retain the topic. We make sure that the topics and questions are explained in the simplest possible way. This way, we do not miss any pointer or formula, or crucial explanation and make sure that the student understands everything from the first get-go.

· Marking scheme: Our experts are well aware of the fact that CBSE marks the answers as per a pre-notified marking scheme. This means each and every step is given a certain mark when written in the answer sheet. Our experts keep that marking scheme in mind and then formulate the solutions. Thus, the students can find that if they solve in a very similar way, then the chances of scoring well and high in the exam becomes much easier.

· Revise: Revising the topics well enough before attempting any exam is crucial. One can say that solving and understanding the solutions is also a great way to do some last-minute revision. Using Class 12 Biology NCERT exemplar solutions, one will learn about question patterns, and also will cover all the topics in the chapter shortly and crisply.

Must Read NCERT Solution Subject wise

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Frequently Asked Questions (FAQs)

1. What makes the solutions understanding?

 The simple way of answering and the easy language used by us will make it easier for the students to grasp the idea quickly. 

2. Are the solutions as per the CBSE marking scheme?

Yes, each and every question is solved by our team of experts as per the marking scheme of the CBSE

3. What elements are added to the NCERT exemplar class 12 Biology solutions?

 Our biology solutions have a proper explanation, diagrams, charts, comparison as required by the questions.

4. Are these NCERT 12th Biology exemplar solutions helpful in the entrance exam?

  Yes, these solutions are a great way to revise the topics covered in the chapter, and this is helpful in last-minute revision.

5. How to use these solutions for preparation?

  One can use these class 12 Biology NCERT exemplar solutions as a referring point while solving questions of one's own.  

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Questions related to CBSE Class 12th

Have a question related to CBSE Class 12th ?
Can I change my board from CBSE to CHSE Odisha in Class 12th?

Hello,

Yes, you can switch from CBSE to CHSE Odisha in Class 12th, but there are a few conditions:

  1. Eligibility : Check if CHSE Odisha allows lateral entry into Class 12th. Generally, students can transfer from CBSE to state boards with prior approval.
  2. Document Requirements : You may need to provide transcripts, mark sheets, and a transfer certificate.
  3. Subject Alignment : Ensure that the subjects you studied in CBSE align with the CHSE curriculum.
  4. Application Process : Contact the respective CHSE Odisha authority or school for specific transfer procedures and deadlines.

Hope it helps !

Read Complete Answer
Prachi Kumari 30 December,2024
quartely question paper for mathematics cbse

Hello there! Thanks for reaching out to us at Careers360.

Ah, you're looking for CBSE quarterly question papers for mathematics, right? Those can be super helpful for exam prep.

Unfortunately, CBSE doesn't officially release quarterly papers - they mainly put out sample papers and previous years' board exam papers. But don't worry, there are still some good options to help you practice!

Have you checked out the CBSE sample papers on their official website? Those are usually pretty close to the actual exam format. You could also look into previous years' board exam papers - they're great for getting a feel for the types of questions that might come up.

If you're after more practice material, some textbook publishers release their own mock papers which can be useful too.

Let me know if you need any other tips for your math prep. Good luck with your studies!

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Jefferson 25 September,2024
i have taken admission in clg after my campartment exam in chemistry along with the neet 2025 preperation but unfortunately i again got campartment after doing all this preparation i got 15 marks only now I can't able to think what should I do next.

It's understandable to feel disheartened after facing a compartment exam, especially when you've invested significant effort. However, it's important to remember that setbacks are a part of life, and they can be opportunities for growth.

Possible steps:

  1. Re-evaluate Your Study Strategies:

    • Identify Weak Areas: Pinpoint the specific topics or concepts that caused difficulties.
    • Seek Clarification: Reach out to teachers, tutors, or online resources for additional explanations.
    • Practice Regularly: Consistent practice is key to mastering chemistry.

  2. Consider Professional Help:

    • Tutoring: A tutor can provide personalized guidance and support.
    • Counseling: If you're feeling overwhelmed or unsure about your path, counseling can help.

  3. Explore Alternative Options:

    • Retake the Exam: If you're confident in your ability to improve, consider retaking the chemistry compartment exam.
    • Change Course: If you're not interested in pursuing chemistry further, explore other academic options that align with your interests.

  4. Focus on NEET 2025 Preparation:

    • Stay Dedicated: Continue your NEET preparation with renewed determination.
    • Utilize Resources: Make use of study materials, online courses, and mock tests.

  5. Seek Support:

    • Talk to Friends and Family: Sharing your feelings can provide comfort and encouragement.
    • Join Study Groups: Collaborating with peers can create a supportive learning environment.

Remember: This is a temporary setback. With the right approach and perseverance, you can overcome this challenge and achieve your goals.

I hope this information helps you.







Read Complete Answer
Kanishka kaushikii 17 September,2024
i scored 84 percent in cbse 2 years ago.Am i eligible for medhavi scholarship if give 12th again after 2 drop years and will got 75+ in mpboard

Hi,

Qualifications:
Age: As of the last registration date, you must be between the ages of 16 and 40.
Qualification: You must have graduated from an accredited board or at least passed the tenth grade. Higher qualifications are also accepted, such as a diploma, postgraduate degree, graduation, or 11th or 12th grade.
How to Apply:
Get the Medhavi app by visiting the Google Play Store.
Register: In the app, create an account.
Examine Notification: Examine the comprehensive notification on the scholarship examination.
Sign up to Take the Test: Finish the app's registration process.
Examine: The Medhavi app allows you to take the exam from the comfort of your home.
Get Results: In just two days, the results are made public.
Verification of Documents: Provide the required paperwork and bank account information for validation.
Get Scholarship: Following a successful verification process, the scholarship will be given. You need to have at least passed the 10th grade/matriculation scholarship amount will be transferred directly to your bank account.

Scholarship Details:

Type A: For candidates scoring 60% or above in the exam.

Type B: For candidates scoring between 50% and 60%.

Type C: For candidates scoring between 40% and 50%.

Cash Scholarship:

Scholarships can range from Rs. 2,000 to Rs. 18,000 per month, depending on the marks obtained and the type of scholarship exam (SAKSHAM, SWABHIMAN, SAMADHAN, etc.).

Since you already have a 12th grade qualification with 84%, you meet the qualification criteria and are eligible to apply for the Medhavi Scholarship exam. Make sure to prepare well for the exam to maximize your chances of receiving a higher scholarship.

Hope you find this useful!

Read Complete Answer
Yuvan 30 August,2024
i upload 12th board result screenshot in ncweb form from the cbse site so it is valid

hello mahima,

If you have uploaded screenshot of your 12th board result taken from CBSE official website,there won,t be a problem with that.If the screenshot that you have uploaded is clear and legible. It should display your name, roll number, marks obtained, and any other relevant details in a readable forma.ALSO, the screenshot clearly show it is from the official CBSE results portal.

hope this helps.

Read Complete Answer
Ashvadha 12 July,2024
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Popular CBSE Class 12th Questions

A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1)

0.34\; J

 Option 2)

0.16\; J
Option 3)

1.00\; J

 Option 4)

0.67\; J
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A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times.  Assume that the potential energy lost each time he lowers the mass is dissipated.  How much fat will he use up considering the work done only when the weight is lifted up ?  Fat supplies 3.8×107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.  Take g = 9.8 ms−2 :

Option 1)

2.45×10−3 kg

 Option 2)

 6.45×10−3 kg
Option 3)

 9.89×10−3 kg

 Option 4)

12.89×10−3 kg

 
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An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1)

2,000 \; J - 5,000\; J

 Option 2)

200 \, \, J - 500 \, \, J
Option 3)

2\times 10^{5}J-3\times 10^{5}J

 Option 4)

20,000 \, \, J - 50,000 \, \, J
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A particle is projected at 600   to the horizontal with a kinetic energy K. The kinetic energy at the highest point

Option 1)

K/2\,

 Option 2)

\; K\;
Option 3)

zero\;

 Option 4)

K/4
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In the reaction,

2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}

Option 1)

11.2\, L\, H_{2(g)}  at STP  is produced for every mole HCL_{(aq)}  consumed

 Option 2)

6L\, HCl_{(aq)}  is consumed for ever 3L\, H_{2(g)}      produced
Option 3)

33.6 L\, H_{2(g)} is produced regardless of temperature and pressure for every mole Al that reacts

 Option 4)

67.2\, L\, H_{2(g)} at STP is produced for every mole Al that reacts .
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How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

Option 1)

0.02

 Option 2)

3.125 × 10-2
Option 3)

1.25 × 10-2

 Option 4)

2.5 × 10-2
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If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1)

decrease twice

 Option 2)

increase two fold
Option 3)

remain unchanged

 Option 4)

be a function of the molecular mass of the substance.
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With increase of temperature, which of these changes?

Option 1)

Molality

 Option 2)

Weight fraction of solute
Option 3)

Fraction of solute present in water

 Option 4)

Mole fraction.
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Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol-1) is

Option 1)

twice that in 60 g carbon

 Option 2)

6.023 × 1022
Option 3)

half that in 8 g He

 Option 4)

558.5 × 6.023 × 1023
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A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t2) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m2 , the number of rotations made by the pulley before its direction of motion if reversed, is

Option 1)

less than 3

 Option 2)

more than 3 but less than 6
Option 3)

more than 6 but less than 9

 Option 4)

more than 9
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