The Water Vascular System of Echinoderms Carries Out Many Functions

question 19

Multiple Choice

The water vascular system of echinoderms carries out many functions that are distributed through multiple systems in other animals.Which of the statements below are valid comparisons between the functions of the water vascular system and similar functions in arthropods? Check all that apply.

• A) Gas exchange in echinoderms often occurs via diffusion of gases across tube feet.In arthropods there are tracheal systems or gills that provide for gas exchange.
• B) The water vascular system is often a means of attachment and locomotion via tube feet of echinoderms.In arthropods,muscles interact with the jointed exoskeleton to produce movement.
• C) The water vascular system of echinoderms provides for the release of gametes for external fertilization.Arthropods have oviducts and sperm ducts for the release of gametes to the environment.
• D) The water vascular system has sensory function in virtually all echinoderms.In some echinoderms,it also may be involved with suspension feeding.In arthropods,the exoskeleton is modified for sensory perception and feeding usually involves specialized mouthparts and other modified appendages.

Grasp the importance of appropriately framing messages using introductory dependent clauses, and recognizing the structure of well-written sentences.

Identify the significance of labeling main ideas and ensuring paragraph unity for clear communication.

Understand the importance of conducting research (primary or secondary) in preparing effective business documents.

Recognize the importance of employing specific transitional words to indicate the nature of relationships among ideas.

---

Definitions:

Background

The part of a work's setting or context that provides relevant information about the environment or circumstances behind the main action or subject.

Foreground

The front part of a visual interface, usually containing elements with which a user directly interacts, as opposed to the background.

Methods

Blocks of code that perform specific tasks and can be called upon by name to execute those tasks within a program.

Init Method

Refers to an initialization method, typically used to set up or prepare initial states for objects or variables in programming.