Question

Can you guess why algae are green in colour ?

Answer 1

because of the presence of chlorophyll in them leads to have green color body .....similar like plants .......they prepare there own food. 

Answer 2

Hope this answer will help you

Because of the presence of photosynthetic pigments known as Chlorophyll..
There are many types of chlorophyll but Chlorophyll-a is essential one!!!

Thanks a lot!!