"Ant" Animal PPT Courseware 2

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"Ant" Animal PPT Courseware 2

Get to know ants

Ants are the most common insects on earth and the most numerous insect species. I think back then, it was next to dinosaurs. Ants are very ancient insects, their origins can be traced back to 100 million years ago, around the same time as the dinosaurs.

Ants are not only common but also come in many varieties. Currently, there are about 9,000 known species of ants in the world. It is estimated that there are 12,000-15,000 species in total, and there are at least 600 species in China. Ants have a long lifespan. Worker ants can live from a few weeks to 3-7 years, and queen ants can live for more than ten years or decades. An ant nest can grow in one place for years, or even more than 50 years.

Types and division of labor of ants

All Formicidae live in social groups. There are generally four different ant types in a colony.

l. Queen ant: The reproductive female, or mother ant, is the largest in the group, especially with a large abdomen, well-developed reproductive organs, short antennae, small thorax and feet, with wings, wingless or wingless. The main responsibility is to lay eggs, reproduce offspring and manage the group family.

2. Male ant: or father ant. The head is round and small, the upper jaw is underdeveloped, and the antennae are slender. They have well-developed reproductive organs and external genitalia, and their main function is to mate with the queen.

3. Worker ants: also called professional ants. Wingless, generally the smallest individual in the group, but the most numerous. The compound eyes are small and the single eye is very small or absent. The upper jaw, antennae and three pairs of thorax are well developed, and it is good at walking. Worker ants are sterile females. The main duties of worker ants are to build and expand nests, collect food, and feed young ants and queens.

4． Soldier ants have large heads and well-developed mandibles that can crush hard food and become a fighting weapon when defending the colony.

Families that work together:

The work in Ant's family is distributed just right, everyone has something to do, and there is no confusion. The rooms at home are always clean and neat. Where to put food, where to sleep, and where to nurse rooms are all planned, so they are the best architects and designers. Not an exaggeration at all.

Further observation: Can ants get lost?

Ants often come out to look for food. Sometimes they are lucky and find it right away; sometimes they are not lucky and they can't find it after walking for a long time. When they want to go back, can they still recognize the road that has taken them most of the day?

It is true that ants sometimes leave a scent behind where they crawl, but there are also ants that do not leave a scent, but remember the natural smell along the way, and then find their way home.

Ant food:

Ants (worker ants) are masters at finding food. Their sense of smell is sensitive and they can easily find food. When they find food, they will also use special methods to summon their companions and work together to carry the food home. Little ants like to eat sweets just like bees, and ants also like to drink honey, but ants are not picky and can accept any food.

Ants will move their dead companions some distance away from the ant nest and pile the bodies together to form an ant grave.

summary:

1. What do you know about ants?

2. Draw a picture of the ants you have observed.

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Update Time: 2024-11-18

This template belongs to science courseware Third Grade Science Volume 1, Textbook Edition industry PPT template

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