Why Air chambers are well developed in hydrophytes? Give an example (anatomical explain)?

What are some aquatic organisms that live in cold water temperatures?

The diagram illustrates the activity of vesicles during a cellular process.

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.