Give scientific reasons : Coral reefs not found in the regions from west Bengal to Andhra Pradesh but are found in Tamil Nadu and on the east Coast of India.
Because in the regions like Tamil Nadu and east coast of India, there is high salinity, no infloe of fresh water and siltation which favours the growth of coral reefs.
Which of the following is not true for a species?
The best soil for healthy and vigorous growth of the plant is
$I.$ Many xerophytic plants have thick cuticle on leaf epidermis and sunken stomata
$II.$ Some xerophytic plants have special photosynthetic pathway $(CAM)$ that enables their stomata close during day
$III.$ Opuntia has spines (modified leaves), photosynthetic phylloclade (stem)
$IV.$ All adaptations are genetically fixed in all organisms
Choose the combinations of correct option
Which one of the following scientists is famous for his contributions in ecological researches
Tetonic is the study of