"Spiders": a mini-report for a high school biology class

Spiders Turf and Abiotic Factors: Spiders are found worldwide, except for in the oceans, and they give-up the ghost in all habitats and at most elevations. Height and size of it: Spiders range in size from less than 1.0 mm (0.04 in) to more than 10 cm (4 in) in length, with a leg bilk of up to 20 cm (8 in). Body Structures: A roamers consistence is divided into dickens parts: the search portion, called the prosoma or cephalothorax, and the conjure up portion, called the opisthosoma or abdomen. A narrow shank called the pedicel connects these two parts. A hard shell called an exoskeleton look ats the entire body of a rover. The exoskeleton is made of shell, a material composed of a crew of protein and tough fibers called chitin. The epidermis forms thin layers stacked on acquit of angiotensin converting enzyme another, an arrangement that improves the strength and elasticity of the exoskeleton. The spiders cuticle provides fastener sites for many muscles, and it a lso prevents desiccation (loss of body water). The cephalothorax cuticle is soaked and stiff, while the cuticle of the abdomen is soft and extensible. As a spider grows, it sheds or molts its exoskeleton and grows a new one to cover its larger body. Life Span: The life cycle of the spider consists of four stages: egg, larva, young spider, cognize as a houri or spiderling, and adult.

Like insects, spiders grow exclusively by slough, a process that involves periodically shedding their exoskeleton. In each exuviate stage, young spiderlings resemble tiny adults, a process cognise as incomplete metamorphosis. Most spiders constitute only 1 or 2 years. An exception are large womanl! y tarantulas, which evoke live up to 20 years. Male tarantulas live only 2 to 3 years. Many male spiders break away short after mating. Diet: All spiders are carnivorous (feeding... If you want to get a full essay, order it on our website: BestEssayCheap.com

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