Std.7 Practice Paper (Science)

                                                           PRACTICE PAPER 

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Q.1 A Choose the correct alternative and write it along with its allotted alphabet. [2 marks]

        1) Plant food is produced by a special process known as  __________  

            (a) photosynthesis   (b) evaporation  (c) condensation 

        2) The part that grows from inside the seed towards the soil is called the __________

            (a) radical (b) herbs (c) plumule

B] Answer the following:                                             [2 marks]

        1) True or False:

             Androecium is a male reproductive organ.

        2)  Match the following:

Q.2 A. Give scientific reasons (Any 1)     [2marks]

       1) Why do living organisms need nutrition ?

       2) Corn is an example of monocot seed.

       3) Nowadays, food is served buffet style during large gatherings.

Q.2 B] Answer the following (Any 2)        [4 marks]

      1) Draw a neat and labelled diagram of parts of leaf.

      2) Name the following:(Who am I ?)

       i) I transport minerals and water from the root to all aerial parts of the plant. 

       ii) I transport the food (glucose, etc.) from the leaves to other parts of the  plant where it is either consumed or stored..

 3) Complete the table:

Q.3) Answer the following (Any 2) [6 marks]

     1) Choose the appropriate word from the bracket and rewrite the paragraph.

(host ,chlorophyll ,Scavengers, photosynthesis, parasitic, decomposers, saprophytic, insects.)

Due to the absence of ........., the cuscuta is completely dependent on the ........ plant. Hence, it is said to be a completely ........ plant.

Plants which obtain the food from dead and decaying bodies of other organisms are called ...... plants.

........ obtain their food from dead bodies of animals, for example, vulture, 

crow, hyena, etc.  and. ....... are some microbes which obtain their food by decomposing the dead bodies of organisms or other materials. 

  2) Write a note on Pasteurisation.

  3) Describe any three parts of flower.

4. Classify according to food-type.

cow, lion, sparrow, frog, cockroach, tick.

Q.4) Answer the following (Any 1)          [4 marks]

1.Write the practical tests to find out if food has been adulterated or not.

For Milk,Rava,Turmeric powder and Red chilly powder.

2. Identify the parts of stem and write any two functions of stem.

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