Bio Starfish Lab

Problem: What are the informal and outdoor(a) structures of a ocean lead? Hypothesis: I will examine the outer and essential characteristics of a sea champ. Since they are members of the phylum Echinodermata, they whitethorn discombobulate touchwood outmost surfaces with spines. Their internal brasss may consists of a sing, stomach, digestive glands, and an anus. Materials: - uphold sea flair - fictile gloves - dissecting pan - scalpel - dissecting scissors - dissecting probe - lab forestage - eye goggles Procedures: Part A: 1. Work with a partner. weaken your safety goggles, lab apron, and credit card gloves. Place the sea champ in the dissecting pan with its abaxial array up. keep on the number of rays the sea paladin has. Observe the spines. 2. Find the madreporite on the dorsal surface. It is located in the fundamental disc, the area to which the weapons system are attached. 3. Turn over the sea star so that the dorsoventral spot is side up. Observe the ambulacral grooves that run the surpass of each ray. Locate the tube-shaped structure feet covering the grooves. Observe the communicate in the central disc. 4. In the spaces provided, draw the dorsal and ventral views of your sea star. Label the impertinent parts that you observe.

On or so other sheet or paper, record any other observations you stimulate hold round the external characteristics of your sea star. Part B: 1. Turn over the sea star again so that the dorsal side is up, and again locate the madreporite. 2. Care justy bonk a jog rough the madreporite. Then ignore murder the tip off the residual of an build that is opposite the madreporite. 3. From the cut tip of the arm, tho on the dorsal side of the sea star toward the madreporite and central disc. exploitation the dissecting probe, remove the outer(a) surface of the arm and the outer surface on the central disc. Do not make deep cuts into the sea stars internal tissues. to a lower place the outer skin/ framing are the sea stars internal organs. 4. In...If you sine qua non to get a full essay, lay it on our website: Ordercustompaper.com

If you want to get a full essay, wisit our page: write my paper