What group is most closely related to amphibians?

( The branching pattern of the phylogenetic tree makes it clear that amphibians are most closely related to reptiles and mammals.)

Which clade contains the greatest number of animal species?

In terms of species numbers and niche diversity, the Ecdysozoa is far and away the most significant clade of animals with over a million described species and an estimated total of more than 4.5 million living species (Chapman 2005).

Is a lancelet a chordate?

Cephalochordates, commonly called amphioxus or lancelets, are marine invertebrate chordates. They were traditionally held as the closest living relatives of vertebrates and have long occupied a key phylogenetic position in our discussions on the origin of vertebrates.

What are the 4 derived characters of chordates?

In chordates, four common features appear at some point during development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.

Which of these primate groups is most closely related?

Which of these primate groups is most closely related to hominids? Apes, such as chimpanzees, are the primates most closely related to humans.

How closely related are amphibians and reptiles?

Despite their similarities, amphibians and reptiles are in entirely different classes, and their names are not interchangeable. Reptiles are actually more closely related to birds and mammals than amphibians. The most obvious differences between amphibians and reptiles are the scales and claws of reptiles.

Which plant clade has the most species?


Angiosperms constitute approx. 90 % of all land plant species and over 95 % of vascular plant species (Crepet and Niklas, 2009), and are undoubtedly the most successful major land plant clade in terms of species number and diversity, proliferation, prevalence and biomass.

Which belongs to the lobe fin clade?

The Sarcopterygii, or lobe-finned fishes, is a clade containing the coelacanths, lungfishes, tetrapods, and their fossil relatives, including the osteolepiformes and panderichthyids. They are the sister group to the ray-finned fishes (Actinopterygii), together forming the bony fishes (Osteichthyes).

Leave a Reply