Advertisements
Advertisements
प्रश्न
Why do submerged plants receive weaker illumination than exposed floating plants in a lake?
उत्तर
Submerged plants like Vallisneria receive dim illumination because majority of the light is reflected back by the water surface whereas, the floating hydrophytes receive and absorb maximum light as they are on the water surface.
APPEARS IN
संबंधित प्रश्न
Process by which water enters in the roots due to diffusion, is termed as:
Aquatic photo diffraction produces cones ______.
Which of the following is correct range of latitudes for temperate vegion?
Three water bodies were tested for salinity of water. Water body = salt concentration :-
X = 3 parts per thousand of salinity
Y = 35 parts per thousand of salinity
Z = 110 parts per thousand of salinity
Select the correct option regarding this.
What are Eurythermic species?
If a fresh water fish is placed in an aquarium containing sea water, will the fish be able to survive? Explain giving reasons.
Define heliophytes and sciophytes. Name a plant from your locality that is either heliophyte or sciophyte.
Categorise the following plants into hydrophytes, halophytes, mesophytes and xerophytes. Give reasons for your answers.
Salvinia
Which element is responsible for causing soil salinity? At what concentration does the soil become saline?
Does light factor affect the distribution of organisms? Write a brief note giving suitable examples of either plants or animals.
