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Home › Grade7 › Grade 7 Olympiad › Science Olympiad-Grade-7 › Nutrition in Plants & Animals › Nutrition in Plant and Animals Worksheet-1

Nutrition in Plant and Animals Worksheet-1

Nutrition in Plant and Animals Worksheet-1

 

  1. A plant was kept in a dark room for a week. When its leaves are tested with iodine solution, it did not show the presence of starch. From this experiment we can conclude that _____ is required for photosynthesis.

(a) Sunlight       (b) Iodine          (c) Starch          (d) Darkness

 

  1. The tiny pores present on the leaves of plants are called:

(a) Stomata                                    (b) Cells

(c) Chlorophyll                              (d) Grains

 

  1. The glands situated around the mouth that secrete amylase enzyme are called:

(a) Salivary glands

(b) Pituitary glands

(c) Hypothalamus glands

(d) Intracellular glands

 

  1. Glands in the walls of the stomach secrete an enzyme called:

(a) Amylase       (b) Trypsin        (c) Pepsin          (d) Serotonin

 

  1. Bile secreted by lever is stored in:

(a) Gall bladder                            (b) Pancreas

(c) Duodenum                              (d) Any of these

 

  1. The pancreatic juice acts on ____and _____changes them into simpler forms.

(a) Carbohydrates and proteins

(b) Carbohydrates and fats

(c) Proteins and fats

(d) Proteins only

 

  1. Which of the following cannot be proved experimentally?

(a) Light is necessary for photosynthesis

(b) Chlorophyll is necessary for photosynthesis

(c) CO2 is necessary for photosynthesis

(d) None of these

 

  1. Match column I with column II and select the correct option from the codes given below.

Column I

Column II

A

 Energy value of food is measured in calories

(i)

 True

B

 Starch and sugar are proteins

(ii)

 False

C

 Cellulose can be digested in our digestive system

 

 

D

 A balanced diet is made up of six classes of nutrients.

 

 

(a) (a) - (i), (b) - (ii), (c) - (ii), (d) - (i)

(b) (a) - (ii), (b) - (i), (c) - (ii), (d) - (i)

(c) (a) - (i), (b) - (i), (c) - (ii), (d) - (ii)

(d) (a) - (ii), (b) - (ii), (c) - (i), (d) - (i)

 

  1. The given figure represents an experimental set up to demonstrate the necessity of carbon dioxide in photosynthesis. What will you observe after few hours of this experiment?

(a) Leaf inside the conical flask will turn blue-black on starch test.

(b) Leaf outside the flask will turn blue-black on starch test.

(c) Both Leaf inside the conical flask will turn blue-black on starch test. & Leaf outside the flask will turn blue-black on starch test.

(d) None of these

 

  1. Few plants cannot synthesize food on their own and depend upon other plants and small animals. They are called heterotrophic plants. These heterotrophs are classified into :

(a) Thallophytes and bryophytes

(b) Saprophytes and parasites

(c) Xerophytes and hydrophytes

(d) Saprophytes and Pteridophytes

 

Answer Key:

  1. (a)
  2. (a)
  3. (a)
  4. (c)
  5. (a)
  6. (a)
  7. (d)
  8. (a)
  9. (b)
  10. (b)