Arachnids have spider glands that secrete a sticky substance called cobwebs. What is the biological significance of the spider web for members of the Arachnid class?
1) spiders weave a trapping net;
2) weave a nest and a cocoon for laying eggs;
3) in some species of spiders, the spider’s web serves as a parachute for the dispersal of juveniles with the help of the wind.
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