Animals

Animals are one of the main groups of the world of living beings, characterized by a heterotrophic mode of nutrition (sometimes mixotrophic), the ability to actively move in space, the absence of a dense cellulose membrane in cells, typical of plant cells, etc.

Animals differ from plants and fungi in that they feed on ready-made organic substances, unlike plants and fungi, which synthesize organic substances from inorganic ones. Animals are able to actively move to search for food and partners, while plants are attached to the substrate.

Animals are divided into unicellular (protozoa) and multicellular. The latter are divided into invertebrates (worms, mollusks, arthropods, etc.) and vertebrates (fish, amphibians, reptiles, birds, mammals). Animals occupy an important place in ecosystems and play a significant role in human life.

Animals are one of the main groups of organisms, which are characterized by heterotrophy, the ability to actively move and the absence of a dense cellulose shell. Animals are heterotrophs, that is, they feed on organic substances that they receive from the environment. Unlike plants, animals cannot synthesize organic substances from inorganic compounds themselves, so they need food.

Animals can be both predators and herbivores. Carnivores eat other animals, and herbivores eat plants. However, some animals, such as omnivores, can eat both plants and other animals.

Another feature of animals is their ability to move. They can run, jump, swim and fly. This allows them to find food and avoid danger.

In addition, animals have a more complex organization than plants. They have a nervous system that allows them to react to changes in the environment and make decisions. They also have sense organs that help them navigate space and find food.

In general, animals play an important role in the ecosystem because they are consumers of organic substances and participate in the cycle of substances in nature. They also serve as a source of food for humans and other animals.