Compare the general life-history patterns of salamanders with those of frogs. Which group shows a greater variety of evolutionary changes of the ancestral biphasic amphibian life cycle?

Q: Describe three key amniote adaptations for life on land.

A: The amniotic egg provides protection to the embryo and allow it to develop on land, eliminating a…

Q: Give the literal meaning of the name Gymnophiona. What animals are included in this amphibian order,…

A: Gymnophiona is an order species which comes under class amphibian, which in turn comes under phylum…

Q: Contrast the characteristics of crocodilians with those ofsnakes.

A: Snakes and crocodilians are reptiles having keratinized scales on the skin. They have well-developed…

Q: Organisms with a notochord that extends the entire length of the body [ Choose ] throughout its life…

A: Animal kingdom includes- eukaryotes having multicellular structure.

Q: a. List the characteristics of chordates. What were the circumstances that forced them to evolve…

A: Answer :: a) Chordate is a phylum in animal kingdom which includes Urochordata, Cephalochordata and…

Q: Describe structural and functional adaptations that appeared in early amniotes that foreshadowed the…

A: Amniotes include organisms, whose egg is covered by a membrane called amnion. Amnions include…

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: Describe the early and modern amphibians.

A:

Q: The evolution of which of the following features of mammals is hardest to trace through the fossil…

A: Fossil records are the remains of dead organisms that remained intact in various layers of soil in…

Q: Refer to the diagram above. What characteristic is shared by amphibians, birds, reptiles, and…

A: Today biologists agree with what Darwin said that all animals have evolved from one common ancestor…

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: compare the evolution of bony fish and jawless fish.

A: During the Cambrian explosion approximately 530 million years ago, fish began to evolve. The early…

Q: Urochordates, instead of amphioxus, are now considered the sister group of vertebrates. Why is…

A: Urochordates are monophyletic and belong to Vertebrata. The tadpole larva shows the morphology of…

Q: In paragraph form, compare and contrast the morphological differences between Amphibians and…

A: Reptiles and amphibians are grouped under the kingdom Animalia. Both are oviparous and ectothermic.…

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: Contrast the skeleton of an echinoderm with that of an arthropod.

A: The kingdom “Animalia” has several phyla (taxonomic rank: phylum). The organisms of this kingdom are…

Q: Fossils reveal that __ are the fish organisms with bony skeletons

A: Scientists group fish into three main types. They are divided into these groups because of the…

Q: Identify the geologic era and periods in which chordatesand the first vertebrates appear.

A: The chordates are first found in cambrian period which is 530 million years ago

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: Discuss the adaptations of lower chordates to survival in terms of Nutrition

A: Chordates have three principal features:  Presence of pharyngeal gill slits. Presence of dorsal…

Q: Describe three key amniote adaptations for life on land

A: Amniotes are a clade of tetrapod vertebrates including the reptiles, fowls, and mammals. Amniotes…

Q: All vertebrates are chordates but all chordates are not vertebrate? Justify the statement?

A: Chordates are those animals that have rod like notochord.In some chordates, the notochord is…

Q: Compare three aspects of the early development of asnail (a mollusc) and a human (a chordate).

A: A chordate is a phylum which contains vertebrates like mammals, birds and some fishes and also…

Q: During chordate evolution, what is the sequence (from earliest to most recent) in which the…

A: To find What is the sequence in which the following structures evolved in chordate evolution?

Q: Describe three vertebrate adaptations to terrestrial life.

A: In the late Devonian era, the aquatic vertebrates are adapted to terrestrial vertebrates. This…

Q: Which period is known as “Age of amphibians”?

A: Amphibians are the first animal to attempt transition from aquatic to Terrestrial life. From…

Q: Threespine sticklebacks that invaded freshwater lakes have lost their pelvic spines. What other…

A: Threespine sticklebacks (Gasterosteus aculeatus) are commonly found in the ocean. They are…

Q: how many million years ago did amphibians appear?

A: Amphibians are cold-blooded vertebrate tetrapods. The class amphibia comprises frogs, caecilians,…

Q: Diagram the evolutionary tree for chordates and indicate on the tree where major adaptations occur

A: Chordates aren't just vertebrates! Vertebrates are the most visible and well-known members of…

Q: Describe three important differences between the skeletons of the crayfish and the pig.

A: SOME BASIC INFORMATION  SKELETON  It is a structure which is formed by bones  It basically forms the…

Q: Understand the evolutionary history of reptiles.

A: The origin of reptiles is well suited to maintain life on land. Many features show a considerable…

Q: How did the following fish groups evolve? a) Agnatha b) Chondrichthyes c) Osteichthyes d)…

A: Although numerous fossil fishes have already been discovered and documented, they only represent a…

Q: Give one example of each of the four Vertebrate Classes, which are grouped under the Amniotes.

A: Sauropsids and synapsids are members of the amniote group of tetrapod animals. They are…

Q: Adaptations to predation in cuttlefish (and by extension in cephalopods)

A: The change in the heritable characteristics of the species across many generations is called…

Q: List 5 distinguishing features of reptiles and their similar characteristics with amphibians.

A: Reptiles are animals having four limbs (tetrapod) belonging to the class, Reptilia. Reptiles are…

Q: Given that modern echinoderms and chordates look nothing alike, what factors have led zoologists to…

A: Echinoderms are animals that belong to the phylum Echinodermata. They are recognized by radial…

Q: Tetrapods evolved from_______ . a. sharks c. lobe-finned fishes b. teleosts d. placoderms

A: All extant and extinct creatures that evolved from the last single ancestor of amphibians, mammals,…

Q: Describe how early developmental processes in Eutherian mammals are different from those of other…

A: Hi dear, thanks for your question.here is answer you need .can you please give an upvote to me. The…

Q: writes a paragraph that describe the different types of evidence for the fact that tetropods evolved…

A:

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 does radial symmetry means? What is the type of symmetry found in chordates? Which are other…

A: The animals are the most abundant living organism that is found in almost every habitat. They have…

Q: How many years ago did amphibians appear?

A: The amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. The different species…

Q: What is present on the feet of birds which provides more evidence for their evolution from reptiles…

A: Archaeopteryx lithographica is one of the first birds that is considered as the missing link between…

Q: Describe the evolution of mammals, tracing their synapsid lineage from early amniote ancestors to…

A: An animal that is characterized by the presence of mammary glands (mostly in females and sometimes…

Q: If Table 1 were used to name Amphibian A and Amphibian B from Table 2, at which step would the…

A: The correct answer is J. Step 4

Q: Elaborate about the origin and evolution of earlier vertebrates?

A: Vertebrate is considered a subphylum in the kingdom Animalia, which comprises animals with the…

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.