Consider the following statements regarding Algal Bloom.

1. All algal blooms are green in color.
2. Algal bloom always occur in fresh-water.

Select the correct answer using the codes given below.
a) 1 only
b) 2 only
c) Both 1 and 2
d) None of the above.

Ans – [D] 

Explanation – Statement 1 is wrong as all algal blooms are not green, they can be red and brown too. Algal bloom can occur in sea water and it is wrong to say that they always occur in fresh water.