How do lobe-finned fishes differ from ray-finned fishes, and why were the ray-finned forms unlikely to give rise to terrestrial animals?

Q: Is scoliodon a shark?

A: Elasmobranchii is a subclass of cartilaginous fishes that have five to seven laterals to ventral…

Q: Why the enteropneusta are not classified in chordates?

A: Enteropneusta belongs to phylum hemichordates. Few properties of hemichordates: They are…

Q: What is a jawless vertebrate-petromyzon with its structure?

A: Jawless fishes are otherwise known as "Agnatha" and it is a superclass of the phylum Chordata. These…

Q: How do tunicates and lancelets get food? Are there other chordates that you are aware of that feed…

A: Introduction:- A lancelet species belonging to the Cephalochordata subphylum. Myomeres, which are…

Q: How do  invertebrate chordates differ from vertebrate  chordates? Elaborate.

A: Introduction A Chordate Is A Member Of The Chordata Phylum. At Some Point During Their Larval Or…

Q: What adaptation did lobe- finned fish have that was different than the previous organisms? A. lobes…

A: Introduction  Fish are aquatic vertebrates that lack limbs with digits, such as fingers or toes, but…

Q: What is one characteristics that separates chordates from all other animals

A: Most chordates are creatures with backbones/ spines. These reach from little fish to whales. They…

Q: Explain why remipedians were once thought to resemble ancestral crustaceans.

A: Remipedia is a class of small, marine, cave-dwelling crustaceans characterized by a short head and a…

Q: f filter-feeding lifestyle on early chordates?

A: Chordate can be understood as the group of animals that are placed in the phylum Chordata. During…

Q: What are three shared features of vertebrates (other than those that are shared because they are…

A: BASIC INFORMATION ANIMAL KINGDOM  It is among one of the five kingdom classified by R.H. Whittaker.…

Q: Is there any genetic evidence linking lobe-finned fish and amphibians

A: Lobe-finned fishes and amphibians are closely related and connected through a common ancestor which…

Q: What evidence suggests that four-legged animals came from fish?

A: Evolution is a slow process which explains that how the species changes with time to survive in…

Q: Why are the lung fish considered to have a common ancestor with amphibians

A: Rhipidistian freshwater fish belonging to the Dipnoi subclass are lungfish. Lungfish are best…

Q: What are four shared derived characters of chordates?

A: Chordates are the animals with a vertebral column called ‘back bone’. The chordate animals are free…

Q: What is the evolutionary relationship of Neanderthals to Homo sapiens?

A: While a modern human who lived about 40,000 years ago was found to have about 6-9 percent…

Q: What are four key defining characteristics of chordates?

A: Phylum Chordata is the third largest phylum. The animals belonging to this phylum are called…

Q: Which is more closely related to a human, an octopus or tunicate? Explain.

A: The relationship between phylogenetic distance and ecological similarity is key to understanding…

Q: What phyla of animals are most closely related to the chordates?

A: Chordates belong to the phylum Chordata. The Chordates in their full life cycle have one of the…

Q: How do chordates reproduce?

A: Chordates are the animals that have a notochord, a nerve cord, pharyngeal gill slits and post anal…

Q: If snakes are limbless, how can they be consideredtetrapods?

A: The organisms of the ecosystem have significant properties. Depending upon the different features of…

Q: Compare and contrast the characteristics of a jawless fish to those of a jawed fish.

A: Subphylum-Vertebrata can be divided into two Superclass. They are Superclass - Agnatha and…

Q: What derived characters do sharks and tuna share? Whatfeatures distinguish tuna from sharks?

A: Pieces are true, jawed vertebrates with specific organs for respiration, excretion and blood…

Q: jawless fish What is the function of the notochord?

A: Ostracoderms are extinct fishes of Paleozoic. The first evolutionary character that appeared in…

Q: Chordates are grouped with starfish because both are protostomes, true or false?

A: The Correct answer would be False because starfish is neither chordate nor a protostome, it is…

Q: Which group of hadrosaurs had crests?

A: Hardradosaurids means bulky lizards. They were the family of herbivores dinasaurs. They were the…

Q: What is thought to be the function of the shell morphology in African pancake tortoise?

A: Introduction African pancake tortoises:- are native to East Africa and are found in Tanzania,…

Q: Why is the occurrence ofeyelids in amphibians incomparison to their absence infishes an adaptation…

A: Amphibians belong to the phylum Chordata. They are vertebrate tetrapods. This group includes frogs,…

Q: How are animals as delicate as nemerteans able to function as predators?

A: Nemerteans are described as free-living, thin, and extensible worms that are mainly present in…

Q: What is a major difference in function of the coelom in holothurians compared with other…

A: The holothurians are commonly called sea cucumbers. They have one distinct feature which separates…

Q: What is/ are the major comparison(s) between the tunicates and bony fish? Are tunicates…

A: Tunicates belong to sub phylum urochordata. These are marine animals. They have an outer covering of…

Q: Why are echinoderms considered part of the Deuterostomes, despite having incredibly unique…

A: Echinoderms are marine, spiny invertebrates belonging to the phylum Echinodermata, superphylum…

Q: Did gene flow occur between Neanderthalsand humans?

A: Gene flow is a natural process of transfer of genes and alleles from one population to another. Gene…

Q: What class of bony fish and what is the scientific name of the Tilapia? Are Tilapia ray-finned or…

A: Tliapia is a common name for many species of fish belonging to the family Cichlidae (order…

Q: What are the differences between vertebrates and the other chordates?

A: Organisms are divided into two categories- Vertebrates and Chordates. Vertebrates have vertebral…

Q: How has paedomorphosis been important to evolutionary diversifi-cation of salamanders?

A: Phylogenetic evolutionary history consists of the analysis of the sequences of the common ancestors…

Q: Which is the chordate classconsidered an evidence of thetransition of the vertebratesfrom the…

A: Evolution is a process of the change in the characteristics of a species over several generations…

Q: is the presence of notochord considered as plesiomorphic character chordates? yes or no?

A: no,the presence of notochord are not considered as plesiomorphic character chordates. It is…

Q: What does the name “echinoderm” mean?

A: Echinoderms have the following characteristics- 1. They are triploblastic. 2. They are marine. 3.…

Q: what type of scales do bony fish and Lancets have?

A: Lancet fish, both of two types of broadly dispersed, deepwater marine fish of the class Alepisaurus…

Q: What changes in egg design allowed reptiles to lay egg on land?

A: The theory of evolution by natural selection suggests that due to the dissimilarities in their…

Q: what is a homologous feature shared by ostriches and amphibians?

A: In evolutionary biology, the similarity between organisms is of two types: analogy and homology.…

Q: What are the characteristic features of the chordates?

A: A phylum is a taxonomic classification that comes after domain and kingdom in the classification…

Q: What types of molecular and morphological changes occurred along the different branches that led to…

A: Answer: Introduction: Tetrapods (means four limbs) evolved from a group of animals called as the…

Q: Why do you think fishes radiated to many forms and became successful in life in water?

A: there are n number of Asian and African lakes and the number of fishes found there. Tanganyika is…

Q: Sessile adult tunicates lose the notochord; what does this suggest about one function of this…

A: A tunicate larva has the notochord, nerve cord, and tail. After few days of swimming after hatching,…

Q: How do ammocoetes and adult lamprey differ?

A: In morphology and behaviour, the larval stage of the primitive lamprey, known as an ammocoetes…

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.