They are widespread as protective coatings on fruits and leaves?

Related Mcqs:

1. Specialized protective coverings around megasporangium which vary in number are called_________________?

   A. Sporangium
   B. Integuments
   C. Ovule
   D. Pericarp

2. Carotenoids perform protective function in_____________?

   A. Animals
   B. Plants
   C. Both of these
   D. None of these

3. Astronauts may use which technique to grow fruits and vegetables ?

   A. Tissue culture techniques
   B. Cloning
   C. Pasterisation
   D. Hydroponic culture technique

4. Chlorosis, i.e., yellowish hue on the leaves results from_____________?

   A. Accumulation of toxic waste products in leaves.
   B. Deficiency of chlorophyll.
   C. Short supplies of mineral nutrients in the soil.
   D. All of these

5. At which times there is no net gaseous exchange between leaves and the atmosphere.

   A. Day time.
   B. Night time.
   C. Dawn & Dusk.
   D. Mid night.

6. Which of the following constituent is/are maximum in the filtrate that leaves proximal convoluted tubules?

   A. Glucose
   B. Amino acids
   C. Nitrogenous waste
   D. All of these

7. Thick, waxy & leathery cuticle around leaves is present in___________?

   A. Hydrophytes
   B. Mesophytes
   C. Xerophytes
   D. Halophytes

8. Which of the following plant group first formed true leaves?

   A. Psilopsida
   B. Lycopsida
   C. Sphenopsida
   D. Pteropsida

   Submitted by: Navid Muhammad

9. Stoma, found in the epidermis of leaves closes when guard cells

   A. Gain Water
   B. Lose Water
   C. Exchange gas
   D. None of These

   Submitted by: Rana usama Ibrahim

10. Bifacial Leaves :

    A. Leaves of maze plant
    B. Leaves of mango plant
    C. Leaves of water lily
    D. None of these

    Submitted by: Name