Worm Lab Follow up Questions

NAME ______

WORM LAB FOLLOW UP QUESTIONS

LATIN MEANING

KINGDOM ______

PHYLUM ______

CLASS ______

1. Which body part do Earthworms have that gives them their PHYLUM name OLIGOCHAETA meaning “few bristles”? ______

2. How does its coloration (darker on the dorsal surface) help the earthworm? ______

3. The NEPHRIDIA in earthworms have the same function as ______in humans.

4. Which form of nitrogen waste is excreted by earthworms? ______

5. Digestive waste exits through the ______.

6. Nitrogen waste is collected by TUBULES called ______and exits through pores in ______.

7. Trace the parts of the digestive tract through which food passes in order starting at the mouth and ending at the anus. mouth à ______à ______à ______à ______à ______à anus

8. Number of openings in an earthworm’s digestive system? 0 1 2

9. Earthworms are HERMAPHRODITES. Explain what that means. ______

10. Earthworms have no bones. What acts as the skeleton in an earthworm?

______

11. Tell 2 ways that the earthworm’s digestive system is adapted for extracting as many nutrients as possible from a large amount of relatively non-nutritious food (soil)?

1.______

2. ______12. USE the words DORSAL AND VENTRAL to compare the LOCATION of the HEART and NERVE CORD in vertebrates and invertebrates. How are they different?

INVERTEBRATES have a ______heart and ______nerve cord.

VERTEBRATES have a ______heart and a ______nerve cord.

COMPARE/CONTRAST CROP GIZZARD

How does it feel?

Function

COMPARE/CONTRAST SEMINAL SEMINAL RECEPTACLES VESICLES

Stores sperm from?

C ircle ALL that apply to EARTHWORMS:

Acoelom Pseudocoelom Eucoelom

Invertebrate protostomes Invertebrate deuterostomes Vertebrate deuterostomes

blastopore à mouth blastopore à anus determinate spiral cleavage indeterminate radial cleavage

External fertilization Internal fertilization

Indirect Development Direct development

HERMAPHRODITE SEPARATE MALE and FEMALE SEXES

Asexual Reproduction Sexual Reproduction

Open circulation Closed circulation

No cephalization Cephalization

VENTRAL nerve cord/DORSAL heart DORSAL nerve cord/VENTRAL heart

Asymmetry Radial symmetry Bilateral symmetry N ame the EARTHWORM part described below:

Provides traction when crawling ______

NON-CELLULAR coating that protects skin and prevents drying out ______

Fleshy flap of skin that covers and protects the worm’s mouth and can sense light/dark ______

Carries sperm from male genital pore to clitellum ______

Openings on ventral surface for seminal vesicles ______

Divides coelom into compartments ______

Tubules that collect and excrete nitrogen waste ______

Makes sperm ______

Makes eggs ______

Stores sperm made by this worm to give away ______

Stores sperm received from other worms ______

Acts as heart to pump blood ______

Pulls food into the digestive system ______

Carries food from pharynx to crop ______

Stores soil waiting to be digested ______

Grinds food ______

Absorbs nutrients from digested food ______

Infolding INSIDE intestine to provide surface area and increase absorption of nutrients ______

Acts as the brain ______

Makes mucous for reproduction ______