Unlike eutherians, both monotremes and marsupials(A) lack nipples.(B) have some embryonic development outside the uterus.(C) lay eggs.(D) are found in Australia and Africa

Q: What are the problems that vertebrates needed to solve to adapt to the terrestrial environment since…

A: In aquatic medium there are plenty of water, but in terrestrial environment water availability is…

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: Describe four shared derived characters of vertebrates.

A: Vertebrates are members from the subphylum Vertebrata, under the phylum Chordata and under the realm…

Q: What are some characteristics that allowed for the evolutionary success of arthropods?

A: Introduction Phylum Arthropoda, the largest in the animal kingdom, which includes familiar forms…

Q: What are the key events in the evolution of the animals?

A: Evolution can be defined as the change in the characteristics of species over several generations…

Q: How are the vertebrates related?

A: Vertebrates refers to all the species of animals within the Subphylum Vertebrata. Subphylum…

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

A: Answer. Deuterostomic: The anus of the digestive tract develops first in the embryo and the mouth is…

Q: Which arthropod class is the most diversified animal group of the planet? How can this evolutionary…

A: Arthropods have jointed appendages. They are characterized by wings and  3 pairs of legs.

Q: What evidence is there that dinosaurs brooded their eggs and tended their young long after they…

A: Dinosaurs are an assorted gathering of reptiles of the clade Dinosaurian. They initially showed up…

Q: Describe three adaptations that have allowed amniotes to become completely terrestrial.

A: Amniotes are basically the organisms that have amnion in their egg. They belong to a clade of…

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: 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: What similarities do birdsand reptiles share regardingexternal coverage,reproduction and excretion?

A: Birds are the warm-blooded vertebrate animals constituting the class aves. They are characterized by…

Q: Discuss how humans, as chordates, possess all fourcharacteristics either as embryos or adults.

A: All the chordates posses the following diagnostic characters either in the embryonic or adult…

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: How does variation in resistance to toxic rough-skinned newts affect the evolution of garter snakes?

A: The rough-skinned newt is famous for it's strong toxin released from it's skin. have rounded snout,…

Q: What are the five classes of vertebrates? To which of these do human beings belong?

A: Vertebrates: These are those organisms that have a spinal cord and it is surrounded by bone or…

Q: What are the reasons that you can think of for the arthropods to constitute the largest group of the…

A: The phylum Arthropoda consists of invertebrate animals such as insects, arachnids, and crustaceans.…

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: by comparing and contrasting the physical features of a shark, guitar fish and the sting ray, what…

A: We all know that the largest shark is the whale shark (Rhiniodon typus) with length of 13-39 ft and…

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: what  is a carapace?

A: Numerous animals have a protective covering on the outside of their bodies. Some of the animals with…

Q: Why was the medusa stage lost in some cnidarians? Do you think it is more advantageous

A: Solution : In the phylum Cnidaria, which includes jellyfish and sea anemones, polyp and medusa are…

Q: 1. Describe evidence showing that echinoderms are more closely related to chordates than are other…

A: Introduction :- Marine invertebrates classified as echinoderms include starfish, brittle stars, sea…

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: How do the skin and respiratory systems of amniotes differ from those of their early tetrapod…

A: Amniotes belongs to the kingdom Animalia and phylum Chordata. They belong to the clade of tetrapod…

Q: The Age of Reptiles corresponds to the (a) Paleozoic era (b) Mesozoic era (c) Cenozoic era (d)…

A: Molecular systematics assists biologists in interpreting fossil records to infer animal evolution.…

Q: How did HOMO successfully expand around and out of AFRICA?

A: ANSWER;- - These environment shifts, set off by the wobble of Earth's pivot, made green hallways…

Q: Do sharks have a cecum?

A: In general, the cecum is part of the large intestine in mammals which is present at the junction of…

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

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

Q: what do fossils tell us about the evolutionary history of the animal kingdom?

A: The traces or remains of an organism that once lived on Earth is termed as fossil. Fossils somehow…

Q: How would you distinguish pelycosaurs, early therapsids, cynodonts and mammals?

A: Answer of the question given below...

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: What is the morphological characteristic that evolutionarily approximates the beings of the phylum…

A: Annelids are defined as triploblastic, bilaterally symmetrical, metamerically segmented, acoelomate…

Q: Which of the following statements is correct for all amniotes?   A. They have internal…

A: They include reptiles, birds and mammals. They have three membranes amnion, chorion and allantois…

Q: What can be inferred about the evolution of the cranium and vertebral column from examining…

A: Introduction: The evolutionary process can be better understood through developmental biology and…

Q: How do australopithecines and Homo differ?

A: Evolution is the change of the qualities of a species of a few ages and depends on the course of…

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 did the characteristic differences between aquatic and terres-trial environments influence the…

A: The basic differences that animal are required to accommodate while moving from water to land are…

Q: What is the role of elaborated cloaca in reptiles?

A: Reptiles are characterized by the presence of four limbs and uric acid as the nitrogenous waste…

Q: What are some of the functional and evolutionary advantages of gnathostomes?

A: Gnathostomes are vertebrates that have jaws. Having jaws has an evolutionary advantage for this…

Q: Distinguish between ostracoderms and placoderms. What important evolutionary characters first…

A: Vertebrates comprise all species of animals within the subphylum Vertebrata. A vertebrate have a…

Q: What evolutionary adaption has enable Arthropods to be the most diverse group within the animal…

A: Introduction Any member of the phylum Arthropoda, which includes such known forms as lobsters,…

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.