Knowledge about animals Only one animal is introduced

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Compared to the lifespan of humans, there are many more in the worldLongevityof animals.

Bowhead whales, also known as the Arctic right whale, it seems that living in the Arctic has many benefits, the cold weather and even the cell activity is reduced, which helps to live a long life. Bowhead whales can live between 100 and 200 years, and the oldest can be up to 211 years old. In 2007, a bowhead whale was captured in Alaska and it was found to have an arrow from a speargun made in 1890 embedded in its neck.

Galapagos tortoise:Adult tortoises are 175 kilograms long and weigh 175 kilograms, with the highest model record being 400 kilograms. The Galapagos tortoise has a lifespan of more than 100 years, and Harrie, the giant tortoise who died of illness at the Australian Zoo in 2006, died at the age of about 175.

A male tortoise named Advita in India lived to be 255 years old.

Greenland sharks:It is the longest-lived vertebrate known on the earth, and the secret of its longevity lies in its little activity, slow growth, only 1 cm a year, and sexual maturity at the age of 150. A female Linglan shark discovered in 2016 may have lived to be 512 years, although later carbon isotope analysis of eye tissue suggests that her actual age may be 392 years.

1. Animals are a large group of multicellular eukaryotic lifeforms, but they are different from microorganisms.

2. Animals are a kind of life that cannot synthesize inorganic matter into organic matter, can only feed on organic matter, can and rely on eating, and is composed of cells, cells have a nucleus, no cell wall, and can move and matrix.

3. Therefore, animals have different morphological structures and physiological functions from plants, so as to carry out feeding, digestion, absorption, respiration, circulation, excretion, feeling, movement and reproductive life activities.

4. Zoology classifies animals with the same or similar characteristics into the same category according to the morphology, internal structure of the body, the characteristics of embryonic development, physiological habits, and the geographical environment in which they live.

5. It is mainly divided into two categories: chordates and chordates; Depending on whether they are aquatic or terrestrial, they can be divided into aquatic and terrestrial; According to the presence or absence of feathers, they can be divided into feathered animals and non-feathered animals; Depending on whether there is a spine in the body or not, we can divide all animals into two categories: vertebrates and invertebrates.

6. After the emergence of primitive life, with the change of the living environment, millions of species continue to appear and die, and only the species that can adapt to environmental changes have survived and multiplied to this day. This process of continuous evolution of species is known in biology as evolution.

7. Animals are a major group of organisms, called animalia.

1. Animals are consumers in the biosphere.

1. Producers: Green plants are the main components of the biosphere, they use light energy through chloroplasts to synthesize inorganic matter into organic matter that stores energy, and belong to the producers in the biosphere.

2. Consumers.

1) Concept: Animals in the biosphere must directly or indirectly feed on green plants, sustaining themselves by consuming organic matter synthesized by green plants.

Phytoivores: Consumers who feed directly on green plants, such as rabbits, cattle, etc.

2) Type. Carnivores: Consumers who feed on other animals, such as wolves, lions, etc.

3. Omnivores: consumers who can eat both plants and plants, such as brown bears.

2. Animals are structural components of the food chain.

1) Concept: In a certain natural area, there is a complex relationship between predation and food among various organisms, and this nutritional connection forms a food chain.

2) Composition: producers and consumers at all levels.

3) The role of animals: In the food chain, animals feed on plants or other animals on the one hand, and may also become food for other animals, which is an indispensable part of the food chain structure.

2. Food web: In a certain natural area, multiple food chains are intricately intertwined to form a food web.

3. Changes in the number of biological populations: due to the interdependence and mutual constraint between organisms, various biological populations have changed. The number tends to be balanced.

3. The impact of animals on the environment.

1. The relationship between animals and the environment: Animals not only adapt to the environment and obtain the necessary materials and energy from the environment, but also can influence and change the environment.

2. The influence of animals on plant life:

1) Positive impact: Helps plants pollinate, disperse seeds, and promote plant reproduction and distribution.

2) Adverse effects: for example, when zooplankton reproduces in large quantities, it causes a decrease in the light transmission of the water body, which affects the distribution and photosynthesis of phytoplankton; Locusts and pests harm crops.