Which of the following promotes growth in plants?

Related Mcqs:

1. Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering______________?

   A. Gibberellins
   B. Cytokinins
   C. Auxins
   D. Ethene.

2. Far-red light promotes flowering in_______________?

   A. Short day plant
   B. Long day plant
   C. Day neutral plant
   D. None of these

3. Rapid growth at exponential ration occurs in which phase of bacterial growth:

   A. Lag phase
   B. Log phase
   C. Stationary phase
   D. Death / decline phase

4. Stunted growth of roots is due to the deficiency of____________in plants?

   A. Potassium
   B. Magnesium
   C. Phosphorus
   D. Iron.

5. Epiphytes are plants which depend on other plants for________?

   A. food
   B. mechanical support
   C. shade
   D. None of these

   Submitted by: Tauqeer Ahmad Rajput

6. All of the following are elements that plants need in very small amounts except___________?

   A. Iron
   B. Hydrogen
   C. Chlorine
   D. Copper

7. Which of the following statement about plants is incorrect?

   A. All are eukaryotes
   B. They are multicellular.
   C. Non-motile organisms
   D. They Are heterotrophes

8. Of the following which one is not the characteristic of the plants included in psilopsida_____________?

   A. Gametophyte is colourless
   B. They have mycorrhizal association
   C. Rhizoids bear Rhizome
   D. Aerial branches have veinless outgrowths

9. Which of the following light is least absorbed by the plants?

   A. Orange
   B. Red
   C. Blue
   D. Green

10. Of the following, which one causes higher production of food in green plants?

    A. Blue
    B. Orange
    C. Red
    D. Violet