CATDOLL : CATDOLL: The structural characteristics of locusts that adapt to terrestrial life are mainly ( ) A. Segmented legs and wings suitable for flying are grown on the chest B. The body is covered with keratin scales C.

1. The structural characteristics of locusts that adapt to terrestrial life are mainly ( ) A. Segmented legs and wings suitable for flying are on the chest B. The body is covered with keratin scales C.

AD, segmented legs and wings suitable for flying on the chest, and a tough exoskeleton on the body surface are the main structural features of locusts adapted to terrestrial life. AD is correct; BC, there are no keratin scales on the body surface of locusts, the body surface of locusts is dry, so the body surface is covered with keratin scales, and the body surface secretes mucus to keep moist, which are not structural features of locusts adapted to terrestrial life. BC is incorrect. Therefore, the answer is: A, D

2. What are the characteristics of locusts?

Physical characteristics of locusts

The body surface has a hard exoskeleton, whose main function is to protect and support the soft organs inside and prevent the evaporation of body water. This is one of the characteristics of adaptation to terrestrial life. The exoskeleton cannot grow with the growth of the locust body, so during the growth and development of the locust, the original exoskeleton will be shed, which is called molting.

3. What conditions are needed to raise grasshoppers?

There should be grass and a good environment, preferably on a hillside.

4. Characteristics of crickets and locusts in Insect Notes

The life habits of locusts introduced in "Insect Notes": 1. Habits of mantis: They hide in the grass all their lives, feed on flies and locusts, and are born around April. They lay 200 to 300 eggs at a time. 2. Habits of locusts: They have explosive personalities, jump when frightened, and often feed on grass roots and tender leaves. They lay eggs in holes and have a lifespan of about 6 months. 2. Habits of crab spiders: A common name for the family Theridiidae of the order Araneae. Most species have short and wide cephalothorax and abdomen, and their legs stretch to the left and right, and they can walk sideways like crabs. There are about 1,800 species of crab spiders worldwide. They do not weave webs, and often lie quietly in the bushes waiting to prey on passing insects. The egg sac is laid on leaves or tree trunks. Female spiders often lie on the egg sac to guard it, but usually die before the young spiders hatch. Common ones are the three-pronged flower spider and the saddle-shaped flower crab spider. They live mostly in bushes or bean fields, or in cotton and wheat fields near bean fields, where they prey on pests. In Australia, the children of crab spiders will eat their own mothers. Once the baby crab spiders hatch from their eggs, they begin to suck the legs of the mother crab spider until the mother is completely dry. 3. Araneida, Thomisidae, spiders, life habits: They are shaped like crabs and can also walk sideways or backwards like crabs. They are distributed worldwide, with about 125 species in the United States. They are gray or brown, about 12 mm (0.5 inches) long. They do not weave webs but lie in ambush to wait for their prey. For example, the arch-footed flower spider (Misumena vatia) on flowers is white or yellow with red stripes on the ventral side. They can change their body color within a few days to match the color of the flowers. Several species live on or under the bark of trees. Misumena and Misumenoides are common in North America, distributed on fences or plants in open areas. Some species of the families Platoridae, Heteropodidae, and Pseudocypteridae are sometimes called crab spiders.

5. What are the characteristics of the locust's legs, wings, and antennae? How do these affect the locust's life?

The feet and wings of locusts: the front and middle feet are for walking, and the hind feet are for jumping. The two pairs of wings are leathery for the front wings and membranous for the hind wings. The front wings are for protection, and the hind wings are for flying. The well-developed feet and wings make locusts good at flying and jumping, which expands the living range of locusts. The antennae are filamentous, and the flagella are slender and have no special changes. The antennae give locusts a keen sense of smell, which enables them to have a wide range of diet.