In submerged hydrophytes entry of CO2 is through:

Related Mcqs:

1. Submerged hydrophytes have well developed:

   A. Vascular system
   B. Aerenchyma
   C. Root system
   D. Stoma

2. In submerged hydrophytes, which of the following is present?

   A. Air spaces
   B. Cuticle
   C. Well developed sclerenchyma
   D. Well developed vascular tissues

3. In submerged hydrophytes, functional stomata are found:

   A. On upper surface of the leaf
   B. Lower surface of the leaf
   C. Both the surfaces of the leaf
   D. Nowhere on the plant

4. Useful adaptation of hydrophytes is:

   A. Large leaves
   B. Decrease in mechanical tissue
   C. Large mechanical tissue
   D. Increase in aerenchyma

5. Hydrophytes usually have:

   A. Well developed stomata
   B. Well developed aerenchyma
   C. Well developed root system
   D. Well developed vascular system

6. Hydrophytes (Aquatic Plants) means:

   A. A reduction of the protective, conducting and supporting tissues
   B. Absences of palisade tissue
   C. Both (a) & (b)
   D. None of these

7. Mark the rooted submerged hydrophyte:

   A. Potamogeton
   B. Najas
   C. Ranunculus
   D. None of these

8. Which of the following is a submerged floating hydrophyte?

   A. Tpha
   B. Trapa
   C. Potamogeton
   D. Ceratophyllum

9. Mark the rooted submerged hydrophyte:

   A. Marsilea
   B. Utricularia
   C. Vallisneria
   D. Monochoria

10. The stems of submerged water plant are soft and weak because:

    A. They are absolutely devoid of xylem
    B. They totally lack phloem
    C. They do not have stomata
    D. The supporting tissues and xylem are feebly developed