Which feature is characteristic of both annelids and arthropods?
A distinguishing characteristic shared by annelids and arthropods is their body segmentation. At some point in development, segmented animals possess a body plan with repeating segments of identical or similar structures.
How are animals organized into phyla?
Animal phyla are classified according to certain criteria, including the type of coelom, symmetry, body plan, and presence of segmentation. Sponges (Porifera) have a primitive cellular level of organization and lack tissues and symmetry. They depend on a flow of water through the body to acquire food.
Are all annelids Protostomes?
EarthwormPolychaeteLeechBobbit wormEarthwormsUrechis unicinctus
Are arthropods and annelids closely related?
Annelids and arthropods have long been considered each other’s closest relatives, as evidenced by similarities in their segmented body plans.
What traits do all animal phyla have in common?
Characteristics of animal phyla
- Level of organization: cells, tissues, organs.
- Symmetry: asymmetrical, radial, bilateral.
- Cephalization: present, absent.
- Coelom: absent, reduced, present.
- Segmentation: absent, present.
Which animal groups are most closely related to each other?
The organisms within a phylum are considered to be more closely related to each other than they are to organisms of other phyla….Animal Phyla.
What is Annelida and Arthropoda?
1) Body is externally divided into ring-like metameres. 1) Body is divided into head, thorax and abdomen. 2) Annelids show the presence of a closed circulatory system. 2) Arthropods show the presence of an open circulatory system.
What do arthropods and segmented worms have in common?
Both arthropods and annelids are segmented, and members of the annelid class Polychaeta have a pair of appendages on each segment. The plan of the nervous system in arthropods is very similar to that of annelids, and the basic plan in both groups shows a tubular, dorsal heart, which is then lost or modified in some.
Why are annelids and arthropods similar?
Which of the following is considered as a connecting link between Annelida and Arthropoda * 1 point lungfish Platipus Peripatus none of these?
Peripatus is a primitive arthropod having jointed paired legs, compound eyes and tracheas like other arthropods but also displays certain annelidan characteristics, such as worm-like segmented body, non-chitinous cuticle and segmental nephridia. Thus, it forms a connecting link between Annelida and Arthropoda.
What is the difference between Annelida and Arthropoda?
Both Annelida and Arthropoda are composed of segmented animals. The main difference between Annelid and Arthropoda is that Annelida consists of a hydrostatic skeleton whereas Arthropoda consists of an exoskeleton made up of chitin. Animals in both phyla are subdivided into different classes based on their diversity.
What common animals are in each phylum?
The nine major phyla include Porifera (sponges), Cnidaria (hydra and jellyfish), Mollusca (mollusks), Echinodermata (starfish and sea urchins), Nematoda (roundworms), Annelida (segmented worms), Platyhelminthes (flatworms), Arthropoda (insects, crustaceans, and arachnids), and Chordata (fish, amphibians, reptiles.
What traits do all animal phyla have in common quizlet?
Level Of organization:cells, tissues, organs.
What features are common to both animal groups?
All animals are eukaryotic, multicellular organisms, and almost all animals have a complex tissue structure with differentiated and specialized tissues. Most animals are motile, at least during certain life stages.
What would two organisms that are closely related have?
Two organisms that are closely related would have Genetic Engineering
- very similar DNA sequence.
- exactly the same DNA sequences.
- no proteins in common.
- completely different DNA sequence.
How are annelids and arthropods similar?
Both Annelida and Arthropoda consist of segmented body structures. Both Annelida and Arthropoda consist of a hydrostatic skeleton. Both Annelida and Arthropoda consist of cerebral ganglion with ventral nerve cord. Both animals consist of a mouth at one end of the body and the anus in the other end.
How do annelid animals differ from arthropods animals?
Hint: Annelids are the animals that are referred to as segmented worms, while arthropods are referred to as animals with jointed legs. An example of annelids is the earthworm and an example of arthropods is the Housefly. The organisms show the presence of Annulus (rings or segments) all over the body.
What is the link between Arthropoda and Annelida?
Peripatus is a connecting link between Annelida and Arthropoda.
Is connecting link between Annelida & Arthropoda?
Solution : Peripatus is the connecting link between Annelida and Arthropoda.