CBSE Class 11 Biology Previous Year Question Paper 2016 Set 1
This is the CBSE Class 11 Biology Previous Year Question Paper from the 2015-16 annual examination, Set 1. The paper is designed for a maximum of 70 marks and a duration of 3 hours. It comprises 26 questions divided into sections. Questions 1-5 carry 1 mark each, 6-10 carry 2 marks each, 11-22 carry 3 marks each, question 23 carries 4 marks, and questions 24-26 (OTBA) carry 3, 3, and 4 marks respectively. The paper includes questions on various biology topics, requiring students to name, define, differentiate, justify, and describe biological concepts and structures. Solving this previous year's question paper is crucial for students to understand the exam pattern, assess their preparation level, and improve their performance in the board examinations.
Quick info
| Board | CBSE |
|---|---|
| Class | 11 |
| Subject | Biology |
| Session | 2015-16 |
| Language | English |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
The paper has 26 questions with marks ranging from 1 to 4. Questions 1-5 are 1 mark each, 6-10 are 2 marks each, 11-22 are 3 marks each, Q. 23 is 4 marks, and Q. 24-26 (OTBA) are 3, 3, and 4 marks respectively.
Topics covered
Paper topics
- Chitin molecule
- Porins
- Mineral nutrition
- Vacuole membrane
- Cytokinesis
- DNA and RNA
- Hydroponics
- Autotrophs and Heterotrophs
- Essential elements
- Plasma membrane
- Respiratory organs
- Endoskeleton
- Neural tissues
- Nucleic acid bases
- Glandular secretions
- Pneumatophores
- Stem vs Root modification
- Cell cycle phases
- DNA synthesis
- Watson and Crick model
- Cyclosis
- Gibberellin
- Symplast and Apoplast pathway
- Vernalisation
- Protein functions
- Plant hormones
Important topics
- Cell cycle
- DNA structure
- Plant hormones
- Cell structure
PDF preview
Read page by page below. PDF is streamed from the official NCERT website — no download button on this page.
Question paper text
Annual Examination 2015-16 Science - Biology
Class - XI
Time allowed: 3 hours Maximum Marks: 70
General instructions:
- All questions are compulsory.
- There are 26 questions in total. Q. Nos. 1 to 5 carry 1 mark each, Q. nos. 6 to 10 carry 2
marks each, Q. nos. 11 to 22 carry 3 marks each, Q. no. 23 carry 4 marks and Q. nos. 24 to 26 OTBA questions carry 3, 3 and 4 marks respectively.
- The diagram should be neatly and properly drawn, wherever necessary.
Section A
- Name the basic unit of chitin molecule.
- What are porins?
- What is mineral nutrition?
- Which unit membrane is used to bound a vacuole of a plant cell?
- Give the name of the method by which cytokinesis takes place in a plant cell.
Section B
- Where do you find the following in DNA, RNA or both?
- Ribose
- Deoxyribose
- Adenine
- Uracil
- What is hydrophonics? Give one application of this technique.
0r Give examples of two autotrophs and two heterotrophs.
- Define essential element.
- What is plasma membrane?
Name the respiratory organs of these arthropods.
- Cockroach
1/3
- Kingcrab
- Of what tissues endoskeleton is made up of? Give its main parts.
Section C
- Mention any two special properties of neural tissues.
- Write the structural formula of the following:
- Adenine
- Cytosine
- Guanine
- Name the secretions of the following glands
- Pituitary
- Thymus
- Ovary
- Hypothalamus
- What are pneumatophores? Also give an example.
- "Potato is a stem and sweet potato is a root". Justify the statement on the basis of external features.
16. (i) What is the sequence of phases in cell cycle?
- Briefly describe various stages in cell cycle from interphase to mitosis.
- When does DNA synthesis takes place in cell cycle?
<math>\mathbf{or}</math>
Give important features of Watson and Crick double helical model of DNA.
- What is meant by cyclosis or cytoplasmic streaming? Write two functions of it.
- (i) Which part of plant is associated with the production of gibberellin?
- State two main functions of this hormone.
Differentiate between symplast and apoplast pathway.
- Define vernalisation. How does it help in flowering in plants?
- Write the functions of different proteins. Name their monomeric unit.
- Name the hormone which
- Is gaseous in nature?
- Is responsible for photoperiodism?
- Induces femaleness in flower of cucumber.
2/3
Frequently asked questions
What is this document?
This is the CBSE Class 11 Biology Previous Year Question Paper for the Annual Examination 2015-16, Set 1.
What is the total marks and time duration for this paper?
The paper is for a maximum of 70 marks and has a time duration of 3 hours.
How are the questions distributed in terms of marks?
Questions 1-5 carry 1 mark each, 6-10 carry 2 marks each, 11-22 carry 3 marks each, Q. 23 carries 4 marks, and Q. 24-26 (OTBA) carry 3, 3, and 4 marks respectively.
What types of questions are included in this paper?
The paper includes a variety of questions such as naming, defining, differentiating, justifying, and describing biological concepts and structures.
How does solving this previous year question paper help students?
Solving this previous year question paper helps students understand the board exam pattern, assess their preparation, and improve their marks for the upcoming examinations.
Content reviewed by the NCERT Help team. Editorial Team and update policy
Question Papers PDF on NCERT Help. URL unchanged for search indexing.