Biology 11 Chapter - 10 Form and Function in Plants -9

Biology 11 Chapter - 10
Form and Function in Plants -9

1. Which one of the following is sucked up by the aphids from plants?

a) A. Sugars
b) B. Fats
c) C. Proteins
d) D. B and c

2. The food contents of aphids that they suck from phloem of plants contains?

a) 30 percent sugar
b) 70 percent sugar
c) 100 percent sugar
d) 50 percent sugar

3. The honey dew which is dropped during aphid sucks the sugar from plant is used as food for?

a) Ants
b) Grasshoppers
c) Frogs
d) Cats

4. The ability of an organism to maintain a steady internal environment is known as?

a) Homeostasis
b) Excretion
c) Nutrition
d) Osmosis

5. The lowering of osmotic potential by active solute accumulation is known as?

a) Osmotic adjustment
b) Homeostasis
c) Plasmolysis
d) Capillary action

6. When the osmotic pressure of a fluid and that of a cell placed in it is equal to each other, the condition is known as?

a) Isotonic
b) Hypotonic
c) Hypertonic
d) Diffused

7. In case of isotonic conditions?

a) No net movement of water occurs
b) Cell loses water
c) Cell gains water
d) None of these

8. In which one of the following cases, the cell loses water to the surrounding solution?

a) Hypertonic solution
b) Hypotonic solution
c) Isotonic solution

9. Hydrophytes are living in?

a) A. Water
b) B. Salty areas
c) C. Deserts
d) D. Both b and c

10. Hydrophytes face?a) Hypotonic conditions
b) Hypertonic conditions
c) Isotonic conditions

This is more feedback!

This is the feedback!