Excessive aerenchyma is characteristic of:

Related Mcqs:

1. The natural nitrogen cycle is greatly affected by the excessive use of:

   A. Sulphate fertilizers
   B. Insecticides
   C. Phosphate fertilizers
   D. Nitrate fertilizers

2. In which one of the following pairs is the specific characteristic of a soil not correctly matched?

   A. Terra rossa – Most suitable for roses
   B. Chernozems – Richest soil in the world
   C. Black soil – Rich in calcium carbonate
   D. Laterite – Contains aluminium compound

3. Rhododendron is characteristic of vegetation of:

   A. Tropical zone
   B. Gangetic plains
   C. Mangrove belt
   D. Alpine zone

4. Mucilagenous tissue and chlorenchymatous cortex are characteristic of:

   A. Epiphytes
   B. Insectivorous plants
   C. Halophytes
   D. Mesophytes

5. The plant that has a characteristic component of the mangrove vegetation is:

   A. Rhizophora mangle
   B. Ficus religiosa
   C. Mangifera indica
   D. Prosopis specigera

6. Which of the following is not the characteristic feature of the anatomy of xerophytes?

   A. Spongy paraenchyma
   B. Well developed conducting tissue
   C. Well developed mechanical tissue
   D. Thick cuticle

7. The plants of Cupressus and Cedrus are characteristic of:

   A. Temperate broad-leaf forest
   B. Temperate coniferous forest
   C. Chaparral
   D. Desert

8. The characteristic genera are ______ with Junipers and occasionally Rhododendron or Ephedra:

   A. Salix
   B. Lonicera
   C. Berberis
   D. Cotoneaster
   E. All of the above

9. The back and forth movements of chemical elements, between organisms and environment along characteristic circular paths and known as:

   A. Biochemical cycles
   B. Ecological cycles
   C. Chemical cycles
   D. None of these

10. Soil formed-after leaching and rich in Al and Fe is

    A. Alluvial
    B. Padsol
    C. Laterite
    D. None of these