their body plan
None of the above. Echinoderm refers to a member of the animal phyla Echinodermata, the sister taxon to our own phyla, Chordata.
All mollusks possess a soft body covered by a hard shell, a muscular foot for movement, and a mantle that secretes the shell. These characteristics distinguish mollusks from other phyla in the animal kingdom.
The kingdom of organisms that exhibit characteristics from various phyla is the kingdom Animalia. Animals encompass a wide range of phyla with diverse characteristics, such as chordates, arthropods, and mollusks, among others. This diversity is a key feature of the animal kingdom.
No, a kingdom is the broadest classification group used in biological taxonomy. It consists of multiple phyla, which are further divided into classes, orders, families, genera, and species. Each phylum contains organisms that share certain fundamental characteristics that distinguish them from organisms in other phyla within the same kingdom.
Sea StarsJellyfishSponges
Phyla: Echinoderms Class: -Asteroidea - Sea stars -Ophiuroidea - Brittle stars -Holothoridea- Sea cucumbers
Organisms are grouped into different phyla based on their shared anatomical, developmental, and genetic characteristics. These characteristics include body plan, symmetry, presence of certain tissues, and genetic relationships. Organisms within the same phylum are more closely related to each other than to organisms in different phyla.
A phylum is a major taxonomic rank in biological classification. It is used to group organisms based on shared characteristics and is below kingdom and above class in the hierarchy. Organisms within the same phylum share a set of common features that distinguish them from organisms in other phyla.
In the Linnaeus system, organisms within the same class contain similar phyla. Classes are one taxonomic rank above phyla and encompass groups of organisms that share similar characteristics and evolutionary relationships.
Phyla are determined by major anatomical features. Does the organism have a spine? Is there a skeleton, and if so is it internal or external? Does it have a shell? Is it motile or sessile? Does it conduct photosynthesis? How many limbs does it have? Does it have hair? Does it have feathers? Does it have eyes? And so forth.
Animals belonging to the same phyla share similar body plans and characteristics. For example, animals in the phyla Chordata, which includes vertebrates like mammals, birds, fish, and amphibians, share a notochord and dorsal nerve cord during their development.
Not all animal phyla possess a backbone or true tissues. Additionally, not all animal phyla exhibit bilateral symmetry or segmentation. Some phyla, like sponges, lack specialized organ systems, while others, like cnidarians, have a simple nerve net instead of a centralized nervous system.