Given below are two statements. 

Statement  I : Cellular organisation of the body is the defining feature of living organisms.
Statement  II : All living organisms have the ability to sense their surroundings or environment and respond to environmental stimuli.

In light of the above statements, choose the correct answer from the options given below. 

Statement I is correct. Cellular organization of the body is indeed a defining feature of living organisms. Living organisms are composed of one or more cells, which are the basic structural and functional units of life. The cellular organization enables living organisms to carry out various biological processes necessary for life, such as metabolism, growth, and reproduction.

Statement II is also correct. All living organisms possess the ability to sense their surroundings or environment and respond to environmental stimuli. This ability is known as consciousness or irritability and is essential for organisms to adapt to changes in their environment, avoid harmful conditions, and seek out beneficial ones. Examples include plants bending towards light (phototropism), animals responding to temperature changes, or humans reacting to pain.