The point at which there is no net exchange of gases between leaves and atmosphere is known as_____________?

Related Mcqs:

1. 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.

2. Aerating openings formed in the bark through which exchange of gases takes place and water is lost in the form of vapours are___________?

   A. Hydathods
   B. Stomata
   C. Lenticels
   D. None of these

3. The higher animals have special organs for exchange of gases as their skin is ___________ ?

   A. Thin
   B. Thick
   C. Soft
   D. Hard

   Submitted by: Rashid Mehmood

4. Triglyceride is also known as_____________?

   A. Natural lipid
   B. Neutral lipid
   C. Neutral wax
   D. All of these

5. Gaseous exchange through the skin is known as ______________ respiration?

   A. Cuticular
   B. Cutaneous
   C. Skin
   D. Pulmonary

6. The arrangement of unequal dichotomous branches in one plane during evolution of leaves is called_____________?

   A. Overtopping
   B. Fusion
   C. Webbing
   D. Planation

7. Which of the following group of tracheophyta has expanded or scale like leaves which are alwaysed arranges in whorls?

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

8. 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

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

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

10. 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