Biology Model Question for HSC

Class - XI

Subject : Biology

Time : 2    hours.                                                                                         Marks. 75

Group - A (Botany)

1.         a)         Describe about Natural system of Classification.                               10

            b)         Write down the characteristics kingdom - Protoctista & Fungi.        5

            Or,

            a)         Describe about conjugation process of spirogyra.                              10

            b)         Write down the characteristics of Phylum-Phaeophyta.                     2

            c)         Draw a plant of Phylum-Phaeophyta.                                                 3

2.         a)         Draw a yeast cell.                                                                                4

            b)         Describe about sexual reproduction of yeast.                                     6

            c)         Draw the longitudinal section of Moss capsule.                                 5

            Or,                  

            a)         Write the name of fungi of the discase "Brown leaf spot" of rice & Give     the structure of that fungi.                                                                                     1+3=4

            b)         Describe about alternation of generation of Perris plant.                   6

            c)         What is floral formula ?                                                                      5

3.         Describe about gametophytes stage of Moss.                                                 8

            Or,

            Describe about gametophytes stage of Fern.                                                  8

Group - B (Zoology)

4.         a)         Describe the spermatogenesis process.                                               7

            b)         Describe the law of segregation of Mendel.                                       8

            Or,      

            a)         Describe the second low of Mendel.                                                  8

            b)         Mention the differences between DNA and RNA.                           7

5.         a)         Describe the structure of RNA.                                                          8

            b)         Write down about different types of chromosome.                           7

            Or,      

            a)         Describe the structure of Nucleus.                                                      8

            b)         Describe the structure of mitochondria.                                             7

6.         Describe the Fluid Mosaic Model of plasma membrane.                    7

            Or,

            Mention the importance, Application and significance of the study of Zoology. 7