Biology Sample paper class 11

Biology Sample paper class 11

Biology Sample paper class 11 : Many students find problem in collecting sample paper for board exams, So here, we have tried to present biology sample paper class 11 for upcoming final exam 2021.

Biology Model Paper class 11

Model papers are a good source for the students. It helps them in their studies and preparation for their exams as well. With the help of these papers they can have an idea about the questions patterns and they can acquire  knowledge and get themselves prepared for the final exam.

Biology class 11 Assam Board

           Full Marks : 70                                          Time : 3 hours
                                                     Group - A
                                            Botany (Marks - 35) 

1. (a) What physiological process is involved in swelling of soaked seed ? 1
     (b) What is the full form of ICBN ? 1
     (c) Who proposed the Fluid - Mosaic Model of plasma membrance ? 1
     (d) Name the main reserve food material found in Fungi. 1
     (e) Name one special type of parenchyma. 1

2. (a) Why stems undergo modification ? 2
    (b) Distinguish between aerobic and anaerobic respiration. 2
    (c) Why prokaryotic cell is regarded as a primitive type of cell ? 2
    (d) Name four distinguishing characters of green algae. 2

3. Answer any three questions
    (i) What is herbarinum ? Write about its importance. 1 + 2 = 3
    (ii) State briefly the mechanism of opening and closing of stomata. 3
    (iii) Who proposed cell theory ? Explain the main features of cell theory ? 1 + 2 = 3
    (iv) Explain the theory of Dixon and Jolly on Ascent of sap. 3
    (v) Mention briefly the characters of different major groups of plants included in cryptogams. 3

4. (i) Define 'virus'. Mention atleast four distinguishing characters of virus. Why viruses are considered as an intermediate stage between living and non - living ? 1 + 2 + 2 = 5
or
    (ii) Describe the peculiar anatomical features in the leaves of C⁴ plants. How C⁴ plants differ from C³ plants ?

5. (i) Who proposed the 'five kingdom' concept of classification ? What are the basic criteria in this concept ? Give a brief account on the five kingdom classification. 1 + 1 + 1 = 3
or
   (ii) What do you mean by tissue system ? Write briefly on epidermal tissue system with diagrams. 1 + 4 = 5

                                               Group - B
                                      Zoology (Marks - 35) 
                                  (Answer all the questions) 

1. Fill in the blanks : 1 × 5 = 5
   (i) The class to which cartilaginous fishes belong is called ____
   (ii) Replication of DNA takes place in _____ stage of cell cycle.
   (iii) Tidal volume and expiratory reserve volume is equal to ____
   (iv) Androgen secreting cells of testis are called ____
   (v) Mature bone cells are known as ____

2. Answer the following questions in short 1× 5 = 5
   (i) Name two basis amino acids.
   (ii) Which epithelium lines the urinary bladder ?
   (iii) Name the structure containing stinging capsule in the tentacles of coelenterates.
   (iv) What do you mean by B+ve (B positive) blood group.
   (v) Write the dental formula of adult human.

3. Answer the following in short.
   (i) Write four distinguishing characters of phylum Echinodermata. ½ × 4 = 2
or
    What is coelom ? Mention the names of coelom type found in insects and men. 1 + ½ + ½ = 2
   (ii) Write the differences between Mitosis and Meiosis. 2
   (iii) Name four factors affecting enzyme activity. ½ × 4 = 2
   (iv) Write the chemical composition and structure of triglyceride. 1 + 1 = 2
    (v) Define a cardiac cycle and the cardiac out put. 1 + 1 = 2
or
     Write the names of four exteroreceptors and their functions in man. ½ × 4 = 2
    (vi) Write the names of four disorders of muscular and skeletal system of man. ½ × 4 = 2

4. Answer the following : 3 × 3 = 9
    (i) Describe the mechanism of hormone action with special with reference to estrogen. 3
or
    Describe the mechanism of blood coagulation. 3
    (ii) Draw a neat labelled diagram of sectional view of human eye. 3
or
     Draw a neat labelled diagram of a nephron. 3
    (iii) Classify carbohydrate with suitable examples. 3
or
    Describe the watson and Crick model of DNA structure. 3

5. Answer the following (any one) 4 × 1 = 4
    (i) What is impulse ? Describe the mechanism of nerve impulse transmission. 1 + 3 = 4
    (ii) Describe the mechanism of digestion of proteins in human gut. 4
or
    Describe the sliding filament theory of muscle contraction. 4