CBSE class 11 Biology Sample papers

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Biology paper

Biology sample papers for class 11 CBSE

cbse class 11 biology sample papers

Sample question paper of Biology for class 11th  CBSE

Biology is a natural science concerned with the study of living organism and life including their structure , function ,growth , evolution , origin. Biology is a vast subject containing many sub divisions. CBSE Biology is divided into 2 parts :

  • Botany 
  • Zoology

The CBSE Biology syllabus of class XI is same as that of different Medical entrance examination like AIIMS , AIPMT , ZIPMET, CMC.

CBSE class 11 BOTANY topics  :

  • Nature of Gene
  • Anatomy of angiosperms
  • Genitic basis of inheritance
  • Genetic engineering
  • Chromosomal basis of inheritance

CBSE class 11 ZOOLOGY TOPICS  :                                                

CBSE sample papers

CBSE sample papers for Biology


  • Nature of scope of biology
  • Understanding life
  • Origin & evolution of life
  • The cell as a unit of Life
  • Structural organization of cells
  • Neurons
  • morphology of animal

                              THEORY                                                                               MARKS

                      Unit : I    Living World                                                                           8

                      Unit : II   Diversity of Life                                                                     13

                      Unit : III  Cell & Cell division                                                                 16

                      Unit : IV  Genetics                                                                                18

                     Unit : V    Morphology Of Plants & animals                                            15

Sample Paper – 2012 Class – XI Subject –Biology 

                                                                 Questions                                                                 Section – A

 01. Why is fungus-animals?

 02. Which hormone is known as an  a stress hormone?

 03.  What is the role of  enzyme secreted by infants in stomach?

 04. What is the first stage of mosses ? Give one characteristic of the same stage.

 05.  What is taxon.

 06.  define mycoplasma? What is its synonym?

 07.  What is the cause of erythroblastosis foetalis? what are its remedies?

 08.  Define GLUT-4. What is its function?                                                                          

 Section – B

09.   Give out line classification of kingdom fungi.

 10.   Show the floral formula and floral diagram  of solanceae

 11.  Give the total number of pairs of motor and sensory nerves in a human being.

 12.  Give two examples of endomembarane  related cell organelle?  

13. The adenine in a DNA molecule is 10%, Find out the amount of guanine

 14. Why is Kreb’s cycle ?

15.  Describe the functions of the plastids.and name their types

16.  Draw the erythrocytic cycle of malarial parasite in a human being.  

OR Define & give example and some characteristic of chrysophytes.

17.   give the zoological name and phylum of any 5 animal. Give two unique feature of their phylum .                                                                         Section – C

18.  What are different types of neurons?

19.   How enzyme inhibitor affect the enzymes.How sulfa drugs help in inhibition of bacterial growth. 20.  What is meant by biological nitrogen fixation? Give chemical reaction of nitrogen conversion in to ammonia. Give role of leghemoglobin in nitrogen fixation

. 21` What is this phenomenon of lateral buds ?

22.   Why this plant is said to have dimorphic chloroplasts.

23.  What are ERV and IRV?

24.  Give the full form of ADH. Name the gland that secretes it.  What is the disease caused due to the failure of  its secretion? 25.  Where does the  Calvin cycle cycle takes place in a cell. 26. . Give two diagnostic  characters of chordata. OR What is  gymnosperms.?

Section – D

 27.  Describe various steps of cardiac cycle with reference of heart sounds.                                                                               OR What is stomata & define various theories related to it.

28.  (i) . Give one example of this vascular bundle.

(ii)  What are the functions of mast cell.

(iii)  Define cork?                                                                        

   OR What is the role of lymph heart in  circulation of lymph in the digestive system of a forg draw its diagram also ? There is no lymph heart in human being than how circulation of lymph takes place in human being.

29Describe the sequence of the events in mitosis. and elaborate it

OR Describe the electron microscope structure of biomembrane and the two models proposed to explain.                

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8 Responses to CBSE class 11 Biology Sample papers

  1. Anonymous says:
  2. Anonymous says:
  3. Anonymous says:
  4. Ramesh says:

    Bio questions paper

  5. shabnum says:
  6. shabnum says:
  7. Bhanu pratap singh says:

    21. Atmospheric pressure is measured by using:
    (a) hydrometer (b) thermometer (c) calorimeter (d) barometer

    22. A piece of ice is floating in jar containing water. When the ice melts then the level of (a) water: (b) rises (c) falls (d) remains unchanged

    23. Which one of the following would a hydrogen balloon find easiest to lift?
    (a) 1 kg of steel (b) 1 kg of lightly packed feather (c) 1 kg of water (d) all the same

    24. A conical vessel of vertical height h filled with a liquid of density d rests on its base. If g is the acceleration due of gravity, the pressure at the point on the base is:
    (a) 1/3 dgh (b) 1/2 dgh (d) 2/3 dgh (e) dgh

    25. A wooden cube just floats inside the water when a 200 gm mass is placed on it. When the mass is removed the cube is 2 cm above the water level. The side of the cube is:
    (a) 5 cm (b) 10 cm (c) 15 cm (d) 20 cm

    26. The walls of the music concert halls:
    (a) amplify sound (b) refract sound (c) produce reverberation (d) absorb sound

    27. A body of volume 100 cc immersed completely in water contained in a jar. The weight of water and jar before immersion of the body was 700 gm. After immersion, the weight of water and jar will be:
    (a) 500 gm (b) 700 gm (c) 100 gm (d) 800 gm

    28. The internal energy of a gas molecule of an ideal gas depends on:
    (a) pressure alone (b) volume alone (c) temperature alone (d) none

    29. Sound when a tuning fork vibrates the waves produced in the fork are:
    (a) longitudinal (b) transverse (c) progressive (d) stationary

    30. Which one of the following characteristics of the sound is affected by the change in temperature?
    (a) wavelength (b) amplitude (c) intensity (d) frequency

    31. A man is standing between the two cliffs. On clapping his hands a series of echoes are heard at the intervals of 1.5 sec. If the speed of sound is 350 m/s the distance between two cliffs is:
    (a) 175 m (b) 350 m (c) 525 m (d) 700 m

    32. The distinction between the voice of a man and that of woman is possible because of difference between:
    (a) loudness of two sounds (b) intensity of two sounds (c) pitch of two sounds (d) quality of two sounds

    33. The speed of sound in air is 350 m/s. The frequency of the tuning fork that produces sound wave of wavelength 7×10-3 m in air is:
    (a) 4000 Hz (b) 4200 Hz (c) 4500 Hz (d) 50000 Hz

    34. The factor that helps to recognize a person by his voice is:
    (a) loudness (b) pitch (c) intensity (d) quality

    35. Decibel is the unit of:
    (a) light intensity (b) sound intensity (c) heat intensity (d) none of above

    36. What causes reverberation?
    (a) reflection (b) refraction (c) interference (d) absorption

    37. In an empty hall, we hear sounds louder than in a hall packed with people. It is because of:
    (a) less absorption of sound (b) doppler effect (c) refraction of sound (d) change in speed of sound

    38. The weightlessness is experienced while orbiting the earth in a spaceship is the result of:
    (a) centripetal acceleration (b) zero acceleration due to gravity (c) inertia (d) none

    39. The escape velocity of a projectile from the earth is approximately:
    (a) 7 km/s (b) 11.2 km/s (d) 1.1 km/s (e) 11.2 m/s

    40. An object is projected upwards with a velocity of 100 m/s. It will strike the ground in about:
    (a) 5s (b) 10s (c) 20s (d) 15s

    41. A stone dropped from a bridge reaches the bottom in 4s. The height of the bridge is:
    (a) 78.4 m (b) 64 ft (c) 2000 cm (d) 260 m

    42. A ball drawn vertically upwards with an initial velocity of 19.6 m/s returns in 4s. The maximum height attained by the ball is:
    (a) 19.6m (b) 26.7m (c) 9.8m (d) none

    43. Ball pen functions on the principle of:
    (a) viscosity (b) Boyle’s law (c) gravitational force (c) surface tension

    44.Sound waves in air are:
    (a) transverse wave (b) longitudinal wave (b) may be both types (c) none

    45. Which is used in measurement of high temperature:
    (a) mercury thermometer (b) platinum resistance thermometer (c) thermo electric pyrometers (d) none

    46. The thermal capacity of 40gm of aluminum of specific heat 0.2 cal/gm0C is:
    (a) 0.4 cal/oC (b) 160 cal/oC (c) 8 cal/oC (d) 4000 cal/oC

    47. Mercury thermometer can be used to measure temperature up to:
    (a) 360 oC (b) 500 oC (c) 212 oC (c) 100 oC

    48. When 20 gm of water is heated from 10 oC to 15 oC , the required energy in joule is:
    (a) 420 (b) 22 (c) 44 (d) 1000

    Plzzzz give me answer this is my future plzzz tell in 2 days plzzz

  8. Rachita Mishra says:

    Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, evolution, distribution, and taxonomy.sample paper is here.

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