To identify which option is NOT a characteristic of living organisms, we need to recall the fundamental properties that define life. Living organisms exhibit a set of unique features that distinguish them from non-living matter.
Correct Option: B) Crystallisation
To classify an organism as 'living', it must exhibit all fundamental characteristics that distinguish living things from non-living things. These characteristics are collectively known as life criteria or life processes.
Correct Option: D) All the defined life criteria simultaneously
The question asks for the best definition of a 'non-living thing' in biological terms. To answer this, we need to recall the fundamental characteristics that distinguish living organisms from non-living matter.
B) Something that was never alive and lacks all life processes
This option provides the most accurate and comprehensive biological definition of a non-living thing. It emphasizes that non-living things do not possess the inherent biological processes (like metabolism, growth, reproduction, response to stimuli) that characterize life, and they did not originate from a living state.
The question asks for the term that describes an organism's ability to maintain a stable internal environment despite external changes. This is a fundamental concept in biology related to the survival of living organisms.
Correct Option: B) Homeostasis is the process by which organisms maintain a stable internal environment (e.g., temperature, pH, water balance) despite fluctuations in the external environment. This stability is crucial for the proper functioning of cells and overall survival.
The question asks to identify the process that exclusively distinguishes living things from non-living things. This requires understanding the fundamental characteristics of life and how they differ from phenomena observed in non-living matter.
Correct Option: A) Self-replication of genetic material is the process by which living organisms make copies of their genetic material (DNA or RNA), which is fundamental for heredity, reproduction, and the continuity of life. This complex, information-driven process is unique to living systems and is not observed in non-living entities.
The question asks for the basic structural and functional unit of all living organisms. This is a fundamental concept in biology. We need to identify the biological level of organization that fits this description.
Correct Option: C) Cell — The cell is universally recognized as the basic structural and functional unit of all known living organisms. It is the smallest unit of life that can perform all the processes necessary for life, such as metabolism, growth, and reproduction.