Skip to main content
Ch. 33 - An introduction to Invertebrates
Campbell - Campbell Biology 12th Edition
Urry12th EditionCampbell BiologyISBN: 9785794169850Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoUrry 12th EditionCh. 33 - An introduction to InvertebratesProblema 2
Capitolo 33, Problema 2

Which phylum is characterized by animals that have a segmented body?
a. Cnidaria
b. Platyhelminthes
c. Arthropoda
d. Mollusca

Guida verificata passo dopo passo
1
Begin by understanding the concept of segmentation in biology. Segmentation refers to the division of an organism's body into repetitive sections or segments.
Review the characteristics of each phylum listed in the options. Cnidaria includes jellyfish and corals, which do not have segmented bodies.
Consider Platyhelminthes, which are flatworms. These organisms have a simple body structure without segmentation.
Examine Arthropoda, which includes insects, arachnids, and crustaceans. This phylum is known for having a segmented body structure, with distinct head, thorax, and abdomen sections.
Finally, look at Mollusca, which includes snails, clams, and octopuses. These animals typically have a non-segmented body structure.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
38s

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Phylum Arthropoda

Arthropoda is a phylum characterized by animals with segmented bodies, jointed appendages, and an exoskeleton made of chitin. This phylum includes insects, arachnids, crustaceans, and myriapods, making it the largest and most diverse group in the animal kingdom. Segmentation allows for specialized body regions and efficient movement.
Video consigliato:
08:00
Arthropods and Chelicerata

Body Segmentation

Body segmentation refers to the division of an organism's body into repetitive segments. This feature is crucial for flexibility and mobility, allowing for specialized functions in different body regions. Segmentation is a key characteristic of certain phyla, such as Arthropoda and Annelida, providing evolutionary advantages in adaptation and survival.
Video consigliato:
03:45
Body Axes

Phylum Characteristics

Phylum characteristics are the defining features that classify organisms into specific groups within the animal kingdom. These include body structure, symmetry, presence of a coelom, and segmentation. Understanding these characteristics helps in identifying and differentiating between various phyla, such as Arthropoda, which is known for its segmented body structure.
Video consigliato:
09:26
Characteristics of Life
Pratica correlata
Domanda del libro di testo

Which of the following combinations of phylum and description is correct?

a. Echinodermata—radial symmetry as a larva, coelom

b. Nematoda—roundworms, internal skeleton

c. Platyhelminthes—flatworms, gastrovascular cavity, no body cavity

d. Porifera—gastrovascular cavity, coelom

2058
views
Domanda del libro di testo

In the following figure, which two main clades branch from the most recent common ancestor of the eumetazoans?

a. Porifera and Cnidaria

b. Lophotrochozoa and Ecdysozoa

c. Cnidaria and Bilateria

d. Deuterostomia and Bilateria

<IMAGE>

1228
views
Domanda del libro di testo

The water vascular system of echinoderms

a. Functions as a circulatory system that distributes nutrients to body cells

b. Functions in locomotion and feeding

c. Is bilateral in organization, even though the adult animal is not bilaterally symmetrical

d. Moves water through the animal's body during filter feeding

2930
views
Domanda del libro di testo

A land snail, a clam, and an octopus all share

a. A mantle

b. A radula

c. Gills

d. Distinct cephalization

1010
views