CBSE Class 12 Biology Sample Papers 2011 Set 02

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Official CBSE Practice Papers for Class 12 Biology

Explore authentic exam practice materials through the CBSE Class 12 Biology Sample Papers 2011 Set 02. Tailored for Class 12 learners, utilizing these Biology sample papers ensures thorough preparation and strengthens time management skills before final CBSE evaluations.

Solved Model Papers for Biology

Access the complete sample paper PDF for Class 12 Biology below. Regular practice with these targeted mock exams builds familiarity with expected question patterns and chapter weightage to help secure higher marks.

Section - A

1. Coconut palm is monocious while date palm is dioecious. Why are they called so?

2. The meiocyte of an onion plant contains 32 chromosomes. Workout the number of chromosomes found in its endosperm.

3. The gene I that controls the ABO blood grouping in human beings has three alleles IA, IB and i.

(a) How many different genotypes are likely to be present in the human population?

(b) Also, how many phenotypes are possibly present?

4. Pick out the ancestral line of Cycads from the list given below - Ferns, herbaceous lycopods, seed ferns, and horsetails

5. Name the source of smack. Mention one way in which it affects the human body.

6. How is alien DNA introduced into in plant cell?

7. Mr. Galgotia eats curd / yoghurt. In this case, which trophic level will he occupy?

8. How is population density of tiger measured?

Section - B

9.
CBSE Class 12 Biology Sample Paper SA1 2014 1
Identify the type of flower shown in A and B. Which out of this two will produce an assured seed set?.
 
10. Fed up of a large family, a couple wanted to adopt a terminal method of contraception. Describe the process conducted by the doctor in either of the cases (male / female partner)
 
OR
A mother of a one year old daughter wanted to space her second child. Her doctor suggested CuT. Explain its contraceptive actions.
 
11. The human male and female bird are heterogametic while the human female and male bird are homogametic. Why are they called so?
 
12. What are interferons? Explain its role in providing immunity. Also name the kind of immunity provided by it.
 
13. What is allergy? Name the antibody responsible for it. Also mention two chemicals released from the mast cells during an allergic reaction.
 
14. Give reason -
(a) Bottled fruit juices bought from the market are clearer as compared to those made at home.
(b) Large holes are found in “Swiss cheese”.
 
15. In which parts of the body of the hosts do the following events in the life cycle of Plasmodium take place? Along with the body parts name the hosts too -
(i) Fetilisation
(ii) Development of gametocytes
(iii) Release of sporozoites
(iv) Asexual reproduction
 
16. What are the latest methods of detection of cancer?
 
17. State two important defense mechanisms in plants against herbivore, with an example each.
 
18. Compare the grazing food chain and detritus food chain in the aspect of their (a) origin and
(b) energy status.
 
Section - C
 
19. Draw a labeled diagram of the sectional view of a mature pollen grain of angiosperms. Explain the function of any two of its parts.
 
20. In a pea plant, smooth seed coat is dominant over wrinkled seed coat. What will be the expected ratio of phenotypes of the offspring in a cross between
(i) Heterozygous smooth × Heterozygous smooth (ii)
Heterozygous smooth × Homozygous wrinkled (iii)
Heterozygous smooth × Homozygous smooth?
 
21. A tRNA is charged with aminoacid methionine
(i) Name the process involved in the attachment
(ii) Point out the mRNA codon and anticodon on tRNA for this aminoacid.
(iii) What is heterochromatin?
 
22. (a) State Hardy Weinberg principle. Name any two factors which affect it.
(b) Draw a graph to show that natural selection leads to directional change.



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Class 12 Biology CBSE Class 12 Biology Sample Papers 2011 Set 02 PDF Download Guide

Review model practice papers for Class 12 Biology. Working through the CBSE Class 12 Biology Sample Papers 2011 Set 02 under simulated test conditions at home ensures complete familiarity with upcoming school evaluations.

Why Practice Class 12 Biology Sample Papers?

  • Curriculum Insights: Clarify chapter-wise weightage rules and question trends across Class 12.
  • Gap Analysis: Check performance drops across sets to isolate specific Class 12 Biology topics needing extra attention.
  • Time Efficiency: Working through objective and descriptive problems builds critical pacing to finish exams comfortably.

Steps to Follow After Completing CBSE Class 12 Biology Sample Papers 2011 Set 02

  1. Self-Evaluation: Score your answers using official guidance to track your academic progress.
  2. Mistake Correction: Class 12 pupils must re-solve questions answered incorrectly to master the correct method.
  3. Continuous Practice: Take additional Biology sample modules online to maximize preparedness for CBSE evaluations.

FAQs

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You can download the complete PDF for CBSE Class 12 Biology Sample Papers 2011 Set 02 for free from StudiesToday.com. Our resources for Class 12 Biology are updated for the latest academic session and follow the official exam pattern.

Are solutions provided for CBSE Class 12 Biology Sample Papers 2011 Set 02?

Yes, CBSE Class 12 Biology Sample Papers 2011 Set 02 comes with detailed, teacher-verified solutions. We have provided step-by-step answers for Biology to help students of Class 12 understand correct methodology and marking scheme.

How can practicing CBSE Class 12 Biology Sample Papers 2011 Set 02 help in exam preparation?

Practicing this Biology paper helps in time management and identifying important topics. For Class 12, solving mock papers is the best way to gain confidence and reduce exam-day anxiety.

Is the CBSE Class 12 Biology Sample Papers 2011 Set 02 accessible on mobile and tablets?

Yes, all our study materials for Class 12 Biology are provided in a mobile-friendly PDF format. You can easily download CBSE Class 12 Biology Sample Papers 2011 Set 02 on your mobile device.