Aim of this blog is to help CBSE, NCERT and other board students of class 7th by providing them free test papers, notes and answers of Exercises etc. of Science!
Script to disable right click
Wednesday, June 15, 2011
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)
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment