After crossing out the number three on her list, Selena looked at her sheet of paper and the seeds she now held.
So basically, the professor wanted them to clean. Selena put the five seeds into the bag before looking at the plant. Ech. Ickiness there. It looked like sap. Selena picked it up off of the plant with her two gloved fingers and gave it a little tug. Apparently, it was stretchy-ish too. Selena wondered if it worked like glue. She wondered what would happen if she accidentally left it on the Slytherin Notice Board. Naaah. She didn't want someone to poke her with the membrane. The Slytherin pulled off the membrane on the plant and dumped it with the compost heap. There. Now the membrane wouldn't be lonely with all the other membranes. Hehe... membrane... what a funny word. Selena let out a little giggle before she picked up her quill and crossed out the number four on her paper.
Oh look. Membrane was on her paper now.
... she wondered if pygmy puffs ate puffapod membranes.