State the cause of accelerated eutrophication.
Causes of accelerated eutrophication:
i) Industrial wastes which are a great source of nitrogen and phosphorous that over-stimulate the algal growth.
ii) Sewage and agricultural wastes also lead to increase in temperature and BOD of the water body thereby leading to algal blooms.
What are 'true breeding lines' that are used to study inheritance pattern of traits in plants?
How does the gene 'I' control ABO blood groups in humans? Write the effect the gene has on the structure of red blood cells.
Name any two types of cells that act as 'cellular barriers' to provide innate immunity in humans.
Why do algae and fungi shift to sexual mode of reproduction just before the onset of adverse conditions?
Identify 'a' and 'b' in the figure given below representing proportionate number of major vertebrate taxa.
