Which statement about lungs and gas bladders is true? A) the first osteichthyans had lungs and these lungs were later converted to gas bladders in actinopterygians B) the first osteichthyans had gas bladders and these gas bladders were later converted to lungs in sarcopterygians C) after the two lineages branched apart, actinopterygians evolved gas bladder and sarcopterygians evolved lungs"

Q: Which of the following statements is true? --Sea stars are dioecious possess dermal branchiae and…

A: Sea stars are dioecious possess dermal branchiae and they have two stomachs.True: Sea stars are…

Q: ) Why is the amniotic egg considered an important evolutionary breakthrough? A) It has a shell that…

A: The amniotic egg allows deposition of eggs in a terrestrial environment (B).It also prolongs…

Q: Which of the following is/are exaptations? a) Group of answer choices b) Feathers of birds c)…

A: The approaches used to analyze animal phylogeny have included anatomy, which demonstrates that…

Q: Which of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata…

A: Chordate can be defined as the animal that will belong to the phylum Chordata. There is some period…

Q: Which of the following are tetrapods? Group of answer choices A, B, C, and D B, C, D, and E D)…

A: Taxonomy identifies and classifies the organism to their group. Phylogenetic data can be helpful for…

Q: Of all of the robust australopithecines, I am the most primitive, dated to 2.5 mya. I have an…

A: The extinct group of primates known as Australopithecus—Latin for "southern ape"—is the source of a…

Q: Which is NOT true about Homo habilis: A) considered the first tool maker B) had a smaller brain the…

A: The question is asking us to identify the incorrect statement about Homo habilis, an early human…

Q: The following nematode features are absent in nematomorphs, EXCEPT…    A) … a ventral nerve cord. B)…

A: Introduction  Roundworms are organisms that belong to the phylum Nematoda. Nematodes in the soil eat…

Q: In which of the following taxa would you find tidal ventilaiton of the respiratory medium? A)…

A: Tidal ventilation is a method in which organism breath in and out the air from same passage.

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.