HSC Biology Model Test-1st Paper -2

Class – XII

Subject : Biology 1st Paper 

Time : 3 hrs.                                                                                                                                         Marks. 75

Group -A Board Questions

1.         a)         Write down the characteristics of Monera.                                                                                4

            b)         Draw Archegonium & Antheridium of Moss.                                                                 6

            c)         Write down economic importance of virus.                                                                                5

Or,       a)         Write down differences between prokaryote & Eukaryote.                                                        5

            b)         Write down characteristics of caynobacteria.                                                                 5

            c)         Write down the sexual reproduction of bacteria.                                                                        5

2.         a)         Discuss about carrier concept of salt absorption.                                                                       5

            b)         What is respiratory quotient?                                                                                                     2

            c)         Describe the process of osmosis.                                                                                              5

            d)         Write down the factors which regulate the transpiration.                                                             3

Or,       a)         Describe about simple tissue.                                                                                                    6

            b)         Draw the section of diagram of monocot stem.                                                              5

            c)         Give the chemical structure of DNA.                                                                                         4

3.         a)         Describe about mangrove ecosystem.                                                                            5

            b)         Describe about green house effect.                                                                                            6

            c)         Draw a labeled diagram of development of male gametophyte of Angiospermic plant.     4

Or,       a)         Describe about Mendel's 2nd Law.                                                                                           8

            b)         Give the process of fixed dome Biogas plant.                                                                 7

Group -B Short Questions

  

4.         Give the structure of chloroplant.

Or,       Give the structure of Nevicula.

 

5.         Describe the following formula Br.  Å      P ₃₊₃   A ₃₊₃  G ₍₃₎

Or,       Write down the characteristics of Papilionaceae.

6.         Write down the differences between photosynthesis & respiration.                                                         5

Or,       Write down scientific name of the following plants.

            a)         One cereal yielding plant

            b)         One oil yielding plant

            c)         One fruit yielding plant.

            d)         One vegetable yielding plant.

            e)         One medicinal yielding plant.

7.         What is cohesion & Adhesion ?                                                                                                            5

Or,       Give the classification of Monosaceharide.

8.         What is sound pollution?                                                                                                                       5

Or,       What is the role of Biotechnology in Environmental management.

9.         What is periderm?                                                                                                                                5

Or,       Write down the activities of Auxin.