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Answer]: C insects are the invertebrates of the invertebrate arthropod phylum insects in the animal kingdom, and the largest group of all organisms, and are the most prosperous animals in the world. Its basic characteristics are the body with three segments: head, chest, abdomen, two pairs of wings and three pairs of feet; A pair of antennae are born on the head, and the bones are wrapped around the body, and the shape changes many times throughout their lives.
Spiders do not belong to the class Insectidae, it is in the class Arachniformes.
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Who are the following crooked animals belonging to the class Insecta?
1.Bee. 2.Paramecium.
Correct answer: Honey bees.
Honeybee (insecta), belonging to the order Hymenoptera, the family of bees. Bees are social insects, which are composed of queen bees, drones, worker bees and other individuals.
Paramecium is a small, cylindrical protozoan that is composed of only one reed cell and is a unicellular animal that is hermaphroditic. It belongs to the class Cilia.
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a. The spider's body is divided into two parts, cephalothorax and abdomen, without wings, with 4 pairs of feet, belonging to the arachnida, so it is not an insect, a is incorrect.
BCD, butterflies, bees, ladybugs, all have the characteristics of insects, they are all insects, and BCD is correct
Therefore, a
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Problem solving ideas: The body of the insect is divided into three parts: head, thorax and abdomen, two bright wings and three pairs of legs, and an exoskeleton outside the body
a. The body of the garden spider is divided into cephalothorax and abdomen, with 4 pairs of legs and no wings, which belongs to the arachnid class of arthropods, so it does not meet the theme;
b. The body of crayfish is divided into two parts: cephalothorax and abdomen, which belongs to the class Carniformes, not insects, and does not conform to the topic
c. The body of the centipede is composed of many segments, and each segment has a pair of Qizhou wide feet, so it is called a myriapod, which belongs to reptiles and does not conform to the theme;
d. The body of the dragonfly can be divided into three parts: head, thorax and abdomen, two pairs of wings and three pairs of legs, and there are exoskeletons outside the body.
Therefore, d1, among the following animals, the animals belonging to the class Insecta are ( ).
a Trailing garden spider.
b crayfish c centipede.
d Dragonflies.
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Spiders, mites, millipedes, centipedes, scorpions, horses, long worms (snakes), etc., are not insects.
Insects are of great variety and morphology, belonging to the arthropods of invertebrates, and are the most abundant animal group on the planet, accounting for more than 50% of all biological species (including bacteria, fungi, and viruses), and their traces are found in almost every corner of the world.
Until the beginning of the 21st century, there were more than 1 million species of insects known to humans, but there are still many species yet to be discovered. Insects are the most diverse and abundant in the animal kingdom and have a significant impact on agricultural production and human health. The most common are locusts, butterflies, bees, dragonflies, flies, grasshoppers, cockroaches, etc.
Not only are there many species of insects, but the number of individuals of the same species is also staggering. The distribution of insects is so wide that no other class of animals can compare with it, and it is almost all over the earth. There are different types.
Most insects can be used as specimens, and they are a good biological resource that humans can use.
It is said that it is a psychological problem, but it is not to that extent, but it is a precursor to psychological problems. The general summary is that there are some obstacles to socialization, and there is some inferiority in the heart, which is not a big problem.
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