std 9th Science - II first unit test 2019-2020

 Science II Unit test -I

Q 1 A) Fill in the blanks :   ( 3 marks )

        1. In ____________ the seeds are covered by fruits.

        2. Many food chains interconnected at various levels is called ___________

        3. ___________ plants have soft and fiber like body.

         B) Match the columns :   ( 2 marks)

          1    Thallophyta                                 a)    No natural covering on seeds

          2    Bryophyta                                    b)    Tissues are present for conduction of water and food

          3    Pteridophyta                                 c)    These plants mainly grow in water

          4    Gymnopserms                               d)    These plants need water for reproduction 

  

Q II. Choose the correct alternative and rewrite the complete sentence : (1 mark each)

           1    In _________ the flowers are reproductive organs.

                  a.     Angiosperms      b    Gymnosperms          c    Pteridophyta     d     Bryophyta

           2    Leaves of _______ show reticulate venation 

                 a       Bamboo            b      Banana          c       Onion       d    Banyan

           3    ___________ is an important component of proteins and nucleic acids

                 a       Carbon               b     Nitrogen        c        Phosphorous         d    Oxygen

           4   Flow of energy is an ecosystem is ________

                 a        Cyclical           b      Two way transport         c      One way transport     

                 d        to and fro transport

           5   The five kingdom classification was proposed by _________

                 a        Robert Whittaker       b      Robert Hooke        c       Eichler      d     Louis Pasteur

Q III Answer the following     ( 2 mark each )

1    Write the characteristics of the plants belonging to division Bryophyta

2     Distinguish between Cryptogams and Phanerogams.

3     Write the characteristics of Gymnosperms.

4     Define the terms     a) Food chain         b) Trophic level

5     Equilibrium is necessary in the various biogeochemical cycles. give reason

6     Write the balanced chemical equation for photosynthesis and respiration

7.     Sketch, label and explain Spirogyra.

Q IV  Answer the following (3 mark each )

1    Write the characteristics of sub kingdom Phanerogams

2    Distinguish between Flow of matter and Flow of energy

3    Write the important processes of nitrogen cycle.

4    Flow of nutrients through an ecosystem is cyclic

5    Write a paragraph about the ornamental plants called Ferns.

6    Which criteria are used for the classification of plants ?

Q V Attempt any one of the following     ( 5 mark each )

1     Describe the Oxygen cycle with a suitable diagrammatic representation .

2.    Write the down the characteristics of Thallophyta with examples.