Grade 1 essay about the growth of other animals

There are currently 21 subfamilies and 283 genera of ants (after bolton 2003) (the main classification system of 16 subfamilies is the same as that of 21 subfamilies, and the new system separates several subfamilies from the subfamily of fierce ants). Ants are a common type of insect that is easy to identify. Generally, the body is small (the color is black, brown, yellow, red, etc., and the body wall is elastic, smooth or hairy.

The mouthparts are chewy, and the palate is well developed. Antennae knee-shaped, 4 13 segments, peduncle segments very long, terminal 2 3 segments distended. The first segment or segments of the abdomen are knotted.

Winged or wingless. The distance of the forefoot is large, comb-shaped, and it is a horn cleaner (used to clean the antennae). It is a polymorphic social insect.

It is estimated that only about half of the ants – currently about 11,700 species – have been described. A larger study of ant fauna is also pending. Common in indoor environments are small house ants, pharaonic ant monomorium pharaonis L

Wait. Ants are the most common and most abundant insect species on Earth. Since all kinds of ants are social groups, they were commonly called "ants" in ancient times.

According to the modern scientific classification of morphology, ants can be divided into two major populations: ants and termites. There are many species of ants, there are more than 9,000 species known in the world, and more than 600 species of ants have been identified in China.

Ants have a very long lifespan, with worker ants living for a few weeks to 3-7 years, and queens for more than a decade or decades. An ant nest can grow in one place for many years, or even more than 50 years. The external form of an ant is divided into three parts: head, thorax, and abdomen, and has six legs.

The ant eggs are about millimeters long, irregular oval, milky white, and the worker ants are small, about millimeters long, and the whole body is brown and yellow. Both male and female ants are relatively large. The abdomen is fat, the head and chest are brownish-yellow, the anterior half of the abdomen is brownish-yellow, and the hinderior half of the abdomen is brownish.

The male is about a millimeter long. The female is about millimeters long. Ants are typical social insects, which have three major elements of social insects, namely, individuals of the same species can cooperate with each other to take care of larvae; a clear division of labor; And the offspring can take care of the previous generation for a period of time.

In addition, it should be pointed out that "termites" are not ants, and termites are very different from ants in terms of physiological structure, in addition to having the same society. Biological behavior refers to the adaptive activities carried out by living organisms that are perceived externally. Ethology is the discipline that studies these activities.

Morphology and behavior were first noticed, but it was not until the 19th century that people gained the theoretical and experimental means to study biological behavior. The doctrine of evolution raises animal behavior to an adaptive level. The current categorization of biological behavior is very confusing.

From the perspective of genetics and development, it is generally divided into innate behavior and acquired behavior, that is, instinctive behavior and learned behavior. However, this classification method is not commonly used, and people generally divide behaviors according to their functions, but unfortunately this classification method is not strict, and there are a lot of overlapping areas.

I, who have a strong sense of curiosity, have always wanted to see the tadpoles grow into small zhi

The whole process of frogs, last year.

Dao, I finally got this wish. Genus.

Last spring, my mother and I went hiking, and we came to the mountain, and we saw a small pond with a lot of small tadpoles.

When I got home, I poured the tadpoles into my little fish tank, sprinkled some dirt on the bottom of the pot, and put some aquatic plants in the water. At this point, the tadpoles must be hungry, and after thinking about it, I put some cooked rice and boiled egg yolks, and I was happy to see them gobble up!

The good times didn't last long, and not long after I raised them, because of my carelessness, the tadpoles not only did not grow legs, but also died, which made me sad for a long time, so I took more careful care of the remaining tadpoles. Under my careful care, it didn't take long for the tadpoles to grow hind legs, and I became more confident!

A few weeks later, the tadpole's front legs also grew, and I couldn't keep my mouth shut. Slowly, their tails gradually shortened, and their chubby bodies lost a lot of weight. One day, I woke up in the morning and couldn't wait to see the tadpoles.

Why is it gone? Oh! It turns out that they have grown up and don't want to stay in the water, so they have climbed onto the wall of the tank!

I just poured the water out and they were jumping around at the bottom of the tank, which was so cute!

Looking at the little frog I raised by myself, I was extremely happy and had a strong sense of accomplishment, which was a wonderful feeling!

Little Squirrel Today, I happily went home to see two cute little squirrels. Their delicate little faces were trimmed with small round eyes and small triangular ears. They were all black, but they had a few white stripes.

One of them is named Qiqi and the other is Jingjing. The little squirrels are fun when they eat, they always sit with their upper bodies sitting.