Date of publication: 2017-08-23 10:26
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Insects such as some species of bees, wasps, ants and termites form societies that contain hierarchies and the division of jobs among their members. Spiders build sophisticated external structures, their webs, mainly to serve as a trap for capturing prey. Another example is the communication mechanism in some bees known as the bee dance, through which one bee tells others information about the location xa5 of flower fields and other sources of nectar.
Gregor&rsquo s family begins leaving the bedroom door open for a few hours each evening so he can watch them. He sees his family wearing down as a result of his transformation and their new poverty. Even Grete seems to resent Gregor now, feeding him and cleaning up with a minimum of effort. The family replaces their maid with a cheap cleaning lady who tolerates Gregor&rsquo s appearance and speaks to him occasionally. They also take on three boarders, requiring them to move excess furniture into Gregor&rsquo s room, which distresses Gregor. Gregor has also lost his taste for the food Grete brings and he almost entirely ceases eating.
In crustaceans, some species undergo direct development whereas others undergo indirect development. In insects, some species do not have a larval stage (ametabolic insects), whereas others go through indirect development beginning with an egg stage followed by a nymph stage (hemimetabolous insects). Moreover, other insects go through indirect development beginning with a larval stage (holometabolous insects).
Grete steps forward and tells her parents that they have to get rid of Gregor. He is persecuting them and trying to drive them out of the apartment and, if he really were Gregor, he would have left of his own accord and let them live their lives in peace. Suddenly realizing that he feels only love and tenderness for his family, Gregor understands that his sister is right and he should disappear. He returns to his room, waits until sunrise, and dies.
Due to the presence of the exoskeleton, the growth of arthropods is periodical. During the growth period, the animal loses the exoskeleton, grows and develops a new exoskeleton. This process is called ecdysis or molting. xa5
Gregor&rsquo s mother knocks on the door, and when he answers her, Gregor finds that his voice has changed. His family suspects that he may be ill, so they ask him to open the door, which he keeps locked out of habit. He tries to get out of bed, but he cannot maneuver his transformed body. While struggling to move, he hears his office manager come into the family&rsquo s apartment to find out why Gregor has not shown up to work. He eventually rocks himself to the floor and calls out that he will open the door momentarily.
The period during which the larva is within its cocoon is a time of intense biological activity since the larva is being transformed into an adult insect.
Reproduction in animals of the phylum Arthropoda is sexual, with a larval stage in some insects and crustaceans (arachnids only go through direct development).