Biology Questions and Answers

The statement that best describes adaptation for survival in organisms is that it is the inherited trait that increases an organism's chances of survival and reproduction in its environment. It refers to the process by which populations of organisms evolve and become better suited to their environment over time.

Ecological succession can be primary or secondary. Primary succession occurs in areas where no previous community existed, such as on bare rock or after a volcanic eruption. Secondary succession occurs in areas where a previous community has been disturbed, such as after a forest fire or human disturbance. Throughout the succession process, the community gradually changes in terms of species composition, population sizes, and community interactions, leading to a more stable and mature ecosystem.

The liver is a vital organ in the human body with multiple functions, but its primary function is the detoxification and metabolism of nutrients and drugs. The liver plays a crucial role in various metabolic processes. It detoxifies harmful substances, such as drugs and toxins, by breaking them down into less harmful forms that can be eliminated from the body.

The urinary tubule, a part of the nephron in the kidney, is indeed responsible for the production of urine. It does this by reabsorbing useful substances from the filtrate, such as glucose and ions, and secreting waste products into it. The modified filtrate, now called urine, is then passed on to the bladder for storage and eventual excretion.

Cell growth refers to an increase in cell size or mass over time. Cell growth occurs by cell division, as cells undergo division to increase their numbers and contribute to overall growth in tissues and organisms.