Science Class 7th Test From NCERT Chapter 1: Nutrition In Plants

M.M: 41 marks                                                                                Dated: 15/06/2011
Time: 1 hour 


Q 1: Fill in the blanks                                                     (1 mark each x 26 = 26 marks)


i.    ___________ is the mode of taking food by an organism and its utilization by the body.
ii.    Photosynthesis takes place mostly in green leaves which contain green pigment, ________________ inside _______________
iii.    The mode of nutrition in organisms which derive their food from the body of some other living organism is called _________ nutrition.
iv.    In a _________________, algal and fungal partners live together and both are mutually beneficial.
v.    6 CO2 + 12 H2O (in the presence of sunlight and chlorophyll) -->  ______________ + 6 O2 + 6 H2O
vi.    A plant that has both autotrophic and heterotrophic mode of nutrition is __________________
vii.    The presence of starch in a food item can be tested by using ____________________   ________ solution.
viii.    _____________ is an example of total parasite.
ix.    Saprophytic plants lack ______________
x.    Plant food factory: ______________
xi.    Depending on mode of nutrition, green plants are called _______________ and animals are called ______________.
xii.    The process of photosynthesis first produces a simple carbohydrate called ___________________ as food.
xiii.    One pore is called _______________.
xiv.    Water and minerals present in the soil are absorbed by the ______________ of a plant and transported to its leaves through the inter-connected pipes like _____________ vessels.
xv.    The glucose carbohydrate is made up of three elements: __________, _____________ and ______________
xvi.    The __________ is a food which is stored in various parts of a plant such as roots, stem, leaves and seeds.
xvii.    _____________ energy is converted into _________________ energy during photosynthesis.
xviii.    Two examples of saprophytes are _______________ and _____________________.
xix.    Two common examples of insectivorous plants are ___________________ and ______________.
xx.    _____________ bacteria convert nitrogen gas of air into water soluble nitrogen compounds called nitrates.
xxi.    Fungi like _______________ and _______________________ are useful.
xxii.    NPK fertiliser provides ___________________, _______________ and _________________
xxiii.    Two examples of leguminous plants are ________________ and _______________
xxiv.    In biology, a _____________ is the smallest unit of life.
xxv.    The thin outer covering of the cell is called ______________________.
xxvi.    There are tiny air spaces in the cytoplasm of an animal cell which are called ________________.


Q 2: The nucleus in a cell is surrounded by a jelly like material. Name this material. (1 mark)

Q 3: Why do farmers spread fertilisers and manures in the fields?                          (1 mark)

Q 4: Consider the following organisms: Lichen, Mushroom, Cuscuta, Grass, Pitcher plant. Out of these, which one is:                                                                               (2 marks)

i.    An autotroph
ii.    A saprophyte
iii.    Symbiotic plant
iv.    A partial heterotroph


Q 5:  Name one plant in which photosynthesis occurs in plant part other than leaves. Name the plant part.                                                                                                   (2 marks)

Q 6:   How would you test the presence of starch in leaves? Write in brief.           (2 marks)

Q 7:   Draw inner structure of a leaf and show various components in it.                (2 marks)

Q 8:   What controls the opening and closing of stomatal pores?                            (1 mark)

Q 9:   Explain why we cannot make food ourselves by photosynthesis like the plants do?             (1 mark)

Q 10: What are the two main modes of nutrition in organisms?                            (1 mark)

Q 11: With the help of only a labelled diagram show photosynthesis in plants.     (2 marks)