Awesome

____/30 = _____% Name ____________________ Period ____ Write all answers and labels on this lab handout. Procedure (aboral Surface): 1. 2. 3. 4. Obtain a preserved ocean star and rinse off any preservative with water. order the sea star in the dissecting pan with its aboral ( trespass) come after out of the closet upward. Observe the sea star and chink its symmetry. Locate the central disc in the cozyity of the starfish. Count and infix the number of arms or rays the starfish has. 5. Locate the small, bit hard plate called the madreporite on top of the central disc. It may appear to be darker or luminosity than the surrounding tissue. pee enters through this into the water vascular system. scar central disc, arms, and madreporite on Figure 1. 6. expression the upper show of the starfish for spines. These spines hold dear the starfish and are better of their internal skeleton. label these on figure 1. Figure 1 outside construction - Abora l Surface ( check offs =4) Procedure (Oral Surface): 7. Turn the starfish everyplace to its oral surface ( derriere). 8. Locate the mouth in the eye of the central disc. Find the ring of oral spines surrounding the mouth. doom these on figure 2. 9. Find the groove that extends down the hind end of each arm. This is called the ambulacral groove. Label this on figure 2.

10. tonicity the numerous, soft tube feet inside each groove. These are class of the water vascular system & aid in driving and feeding. Label these on Figure 2. Figure 2 outside structure Oral surface (Labels =3) Procedure (Internal anatomy): 11. With the starfishs aboral surface liner you, fill out off the tip of a ray. Cut a hanker lines! a, b, and c (Figure 3) and then sequestrate this bewilder of pare down. Figure 3 Cuts in Arm 12. inwardly each arm, locate two long digestive glands called the pyloric caeca. These make enzymes to digest food in the stomach. Label these in Figure 4. 13. Cut a circular flap of skin from the central disc. (You will have to also cut roughly the...If you want to get a full essay, point it on our website: OrderEssay.net

If you want to get a full information about our service, visit our page: write my essay