What is the main function of the crop in an earthworm’s digestive system?
Which of the following developmental features is common to b…
Which of the following developmental features is common to both protostomes and deuterostomes?
Which Cnidarian class includes the common jellyfish?
Which Cnidarian class includes the common jellyfish?
In which class of Cnidaria do corals belong?
In which class of Cnidaria do corals belong?
The excretory system of planarians consists of structures ca…
The excretory system of planarians consists of structures called:
Which feature is characteristic of all mollusks?
Which feature is characteristic of all mollusks?
What is the role of the mesohyl in sponges?
What is the role of the mesohyl in sponges?
Language is:
Language is:
The outer covering of nematodes is called:
The outer covering of nematodes is called:
The clitellum in earthworms is used for:
The clitellum in earthworms is used for: