Hydrophytes (Aquatic Plants) means:

Related Mcqs:

1. In an aquatic environment, microscopic animals and plants are collectively known:

   A. Commensals
   B. Herbivores
   C. Fauna and flora
   D. Planktons

2. In a fish aquarium green aquatic plants are grown primarily for:

   A. Oxygen
   B. Carbon dioxide
   C. Fish feed
   D. Decoration

3. In submerged hydrophytes entry of CO2 is through:

   A. Epidermis as dissolved CO2
   B. Epidermis as carbonates only
   C. Epidermis as carbonates only
   D. Both (b) and (c)

4. Submerged hydrophytes have well developed:

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

5. Useful adaptation of hydrophytes is:

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

6. Hydrophytes usually have:

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

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

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

8. 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

9. Aquatic photostratifraction in increasing depth order:

   A. Euphotic, despotic and aphotic
   B. Aphotic, euphotic and despotic
   C. Euphotic, aphotic and despotic
   D. Despotic, euphotic and aphotic

10. The maximum biomagnification would be in which of the following in case of aquatic ecosystem?

    A. Fishes
    B. Birds
    C. Zooplanktons
    D. Phytoplanktons