WebSep 7, 2024 · When the worms have deposited their sperm, an organ called the clitellum starts to secrete slime that will become a cocoon for the fertilized eggs on each … WebBot Planaria and earthworms use tiny extensions to move. Compare the movement of the Planaria and the earthworm. Tapeworms use their scolex and are parasitic with an incomplete digestive system. Earthworms have a complete digestive system with a pharynx, crop & a gizzard. Earthworms are also free-living.
Clitellata - Wikipedia
WebInternal anatomy of an earthworm (lateral section): small, long, cylindrical animal without legs or hard body parts. Mouth cavity: entrance to the digestive tract of an earthworm. Pharynx: part of the digestive tract of an earthworm just after its mouth. Ventral nerve cord: set of nerves in the abdomen of an earthworm. WebPDF Earthworm Dissection Lab - Pleasantville High School. 6. Locate the setae on the ventral side of the earthworm. Run your finger over the setae. Internal Observation of the Earthworm 7. Place the earthworm in the dissecting pan dorsal side up. 8. Locate the clitellum and insert the tip of the scalpel about 3 cm posterior to the clitellum. sht20 arduino code
EARTHWORMS Science Page - United States Botanic Garden
WebThe worms have a pair of ovaries that produce eggs. The clitellum will form a slime tube around it, which will fill with an albuminous fluid. The worm will move forward out of the slime tube. As the earthworm passes through the slime tube, the tube will pass over the female pore picking up eggs. Webn. pl. cli·tel·la (-tĕl′ə) A glandular swelling of the epidermis of certain annelid worms, such as earthworms, that secretes a viscous fluid to form a cocoon in which the eggs are … WebPDF Earthworm Dissection Lab - Pleasantville High School. 6. Locate the setae on the ventral side of the earthworm. Run your finger over the setae. Internal Observation of the Earthworm 7. Place the earthworm in the dissecting pan dorsal side up. 8. Locate the clitellum and insert the tip of the scalpel about 3 cm posterior to the clitellum. shs yugioh