Biology Questions and Answers

The primary source of variation in a population is mutation. Mutation is a spontaneous change in the DNA sequence of an organism's genome. It introduces new genetic variations by altering the existing genetic information.

The heart is a vital organ in the circulatory system responsible for pumping and circulating blood throughout the body.

Carrying capacity refers to the maximum number of individuals of a species that a particular environment can sustain over a prolonged period of time. It represents the balance between the available resources in the environment and the population's demand for those resources.

Population ecology is a branch of ecology that focuses on the study of populations of organisms belonging to the same species. It involves examining how populations are distributed across different habitats and how their numbers change over time.

One of the important characteristics of green plant is that they can manufacture their food (Autotrophic).

The tilapia fish can be classified under chordata phylum in the animal kingdom.

Operculum or gill cover helps the tilapia fish in gaseous exchange.

No explanation has been provided for this answer.

People with Down's syndrome always have intellectual or physical disabilities. High muscle tone is not visible in a person with Down's syndrome

Migration is an example of a behavioral adaptation for survival in animals. Migration refers to the regular movement of animals from one place to another, often over long distances. Animals may migrate to find better food sources, suitable breeding grounds, or more favorable climates.