Advertisements
Advertisements
प्रश्न
Write a short note on Importance of light to plants
उत्तर
Importance of light to plants
Sunlight acts as the ultimate source of energy for plants. Plants are autotrophic organisms, which need light for carrying out the process of photosynthesis. Light also plays an important role in generating photoperiodic responses occurring in plants. Plants respond to changes in intensity of light during various seasons to meet their photoperiodic requirements for flowering. Light also plays an important role in aquatic habitats for vertical distribution of plants in the sea.
APPEARS IN
संबंधित प्रश्न
How is diapause different from hibernation?
Following are the responses of different animals to various abiotic factors. Describe each one with the help of an example.
1) Regulate
2) Conform
3) Migrate
4) Suspend
What is the water potential of pure water in an open flask?
Osmotic concentration of cell sap used to be maximum in ______.
Aquatic photo diffraction produces cones ______.
Species that can tolerate narrow range of temperature are called ______.
Emergent land plants that can tolerate the salinities of the sea are called.
Define heliophytes and sciophytes. Name a plant from your locality that is either heliophyte or sciophyte.
In a sea shore, the benthic animals live in sandy, muddy and rocky substrata and accordingly developed the following adaptations.
Burrowing
Find the suitable substratum against adaptation.
In a sea shore, the benthic animals live in sandy, muddy and rocky substrata and accordingly developed the following adaptations.
Building cubes
Find the suitable substratum against adaptation.
In a sea shore, the benthic animals live in sandy, muddy and rocky substrata and accordingly developed the following adaptations.
Holdfasts/peduncle
Find the suitable substratum against adaptation.
Categorise the following plants into hydrophytes, halophytes, mesophytes and xerophytes. Give reasons for your answers.
Opuntia
Give the scientific names of any two microorganisms inhabiting the human intestine.
What is a tree line?
Which element is responsible for causing soil salinity? At what concentration does the soil become saline?
Give one example for the following:
Eurythermal plant species
Give one example for the following:
A stenothermal plant species