62. Which of the following statements are true with respect to marine organisms?
1. Periphytons are the unattached organisms which live at air-water interface
2. Planktons are free floating species with limited powers of locomotion
3.Blue whale is Benthic organism
Options:
(a) What criteria can be used to decide whether something is alive ? (b) What is meant by life processes ? Name the basic life processes common to all living organisms which are essential for maintaining life.