While the aminotic egg offers many advantageous, it also has limitations. Which of the following is a limitation of reproduction in amniotes? External fertilization is not possible in amniotes. Amniotic eggs must be laid in water or the embryos will dry out before hatching. Amniotes must be smaller than non amniotes at hatching because of the difficulty getting oxygen through the external membranes.

Q: Whereas hagfish have no larval stage lamprey larva differ significantly from adults. One difference…

A: Lampreys are an ancient extant lineage of jawless fish of the order Petromyzontiformes, placed in…

Q: Which of these does not pertain to a protostome?a. spiral cleavageb. blastopore is associated with…

A: In the animal kingdom, after the fusion of male and female gamete, a diploid zygote is formed. This…

Q: A terrestrial animal species is discovered with the following larval characteristics: exoskeleton,…

A: The phylum is the division of Kindom in the process of classification of organisms in which the…

Q: Which of the following feature is exclusively present in members of class Mammalia? 1.Pulmonary…

A: The phylum chordates or vertebrates come under kingdom Animalia that include animals with backbone…

Q: Which of the following is not a feature common to most animals? a. development into a fixed body…

A: The members of the animal kingdoms show some characteristic features that differentiate them from…

Q: It asks to use the development images below to identify one of each of the following in the photos:…

A: Fertilization is the process of formation of Diploid zygote from the male and female gamete 's…

Q: This opening of the gut leads into the subgerminal cavity in amniotes.

A: Amniotes are organisms which are characterized by the presence of three amniotic layers surrounding…

Q: Humans are members of the phylum chordata. As such they have a notochord. The notochord in humans;…

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

Q: Caecelians are unique from most lissamphibians in that _____. caecilians live mainly in colder…

A: The correct response to this particular question will be, caecilian embryos develop within the…

Q: Benefit of the Adaptation Adaptive Feature Allows movement within body parts Hardened exoskeleton…

A: Arthropods refer to the invertebrate animals having a segmented body, an exoskeleton, and…

Q: During the embryological development of chordates, the midline dorsal layer of ectoderm folds in on…

A: In humans (a chordate), by the end of the third week of gestation, three basic germ layers…

Q: Which of the following is true about animals with bilateral symmetry? Select all that apply. they…

A: Bilateral symmetry is when the sagittal plane passes through the body it divides the body into two…

Q: Which of the following is a characteristic of mammals?     homodont     mammary glands…

A: Introduction Mammals:- Mammals are a group of warm-blooded vertebrate animals belonging to the class…

Q: Many zoologists consider mammalian teeth, rather than endothermy, hair, or lactation, to be the…

A: Mammals belong to the class Mammalia. They are vertebrates. It belongs to the kingdom Animalia and…

Q: Which of the following is NOT true about animals belonging to the clade Bilateria? Select one: O A.…

A: The embryos of Bilateral animals are triploblastic which means they have three germ layers:…

Q: Compared to eutherians, marsupial placentas are more highly developed. o marsupial nipples are…

A: Marsupials and Eutherians all have evolved from ancient mammals. Regarding their method for bearing…

Q: Which of these parts is an embryonic midline structure common to all members of the phylum Chordata…

A: Notochord is an embryonic midline structure common to all members of the phylum chordata and plays…

Q: Draw an egg in its blastula stage and label the parts. What are its distinguishing charcteristics…

A:

Q: Compared to lissamphibians,

A: 1. lissamphibians are a group of tetrapods that includes all modern amphibians. Lissamphibians…

Q: In amniotes the space around the auditory ossicles in the middle ear cavity is filled with _______.…

A: The collection of vertebrates that lays their eggs on the land instead of water, or have their fetus…

Q: Describe the development of the notochord. Include the terms primitive pit, notochordal process,…

A: The Notochord is a cartilaginous skeleton that supports the body in the form of a rod. It is found…

Q: In a diploblastic animal, which tissue layer would be missing? mesoderm ectoderm periderm endoderm

A: The branch of science which deals with the study of tissues is known as Histology. Cells are the…

Q: What is the distinguishing characteristic of each stage in the embryonic development of the sea…

A: Sea urchins are marine invertebrates that show in vitro fertilization where male and female sea…

Q: A terrestrial animal species is discovered with the following larval characteristics; exoskeleton,…

A: The arthropods are the animals that consist of an exoskeleton, system of tubes for gas exchange and…

Q: With respect to nematode reproduction and reproductive structures, which of the following statements…

A: Nematodes are roundworms belonging to the phylum Nematoda and part of the Kingdom Animalia. they are…

Q: extra-embryonic

A: An extraembryonic membrane is one in every one of the membranes which assist within the…

Q: Worms are present in the Platyhelminthes, Annelid and Nematode lineages. How is the coelom used to…

A: Coelom is the principal body cavity that located between gut wall and the body wall. Type of coelom…

Q: which of the following features does not distinguish humans as a member of phylum chordata as…

A: Chordata are the group of animal kingdom which includes three groups that are urochordata,…

Q: Which of the following describes the blastula development in frogs or anurans? Select the correct…

A: In  frogs , the cleavage is Holoblastic and unequal division with the mesolecithal egg .Here the…

Q: At which stage of embryonic development does the embryo have a blastopore?   Group of answer choices…

A: Embryogenesis is the development embryo which starts with the fertilization of egg cell with a…

Q: Tigers Have mitochondria in their cells Share cellular, genetic, developmental and body plan…

A: Answer: Introduction: The tiger is an important existent cat species and belong to the genus…

Q: Which of the following organisms would NOT undergo gastrulation? a. fungi and sponges b. worms and…

A: ANSWER Which of the following organisms would NOT undergo gastrulation? a. fungi and sponges

Q: Which of the following not only increases surface area for nutrient absorption, but also slows down…

A: Animals take their food as huge, complicated molecules that must be broken down into smaller…

Q: How are the oral and anal cavities differentiated in the intact, adult earthworm? The anal cavity…

A: Earthworm is an invertebrate. They are tubular, macroscopic organisms belonging to the phylum…

Q: At which of the following stages of development is a frog embryo composed of the most cells? Group…

A: The different stages of development in a frog are: Zygote→Morula→Blastula→Gastrulation begins→Embryo

Q: Evolutionarily, the jaws of vertebrates developed from   the circular mouth of lampreys.   the…

A: The evolution of the jaw is one of the foremost noteworthy innovations in vertebrate history. A jaw…

Q: Which of the following organisms would you expect to have the largest surface-area-to-volume ratio?…

A: Introduction The deuterostomes include the echinoderms and the chordates. Deuterostomes are also…

Q: Which of the following is not a characteristic of all animals?  Answers: They are multicellular…

A: Animals are known to be a kingdom of many-celled eukaryotes. They are unable to make their own food.…

Q: a japanese spider crab is an invertebrate, explain the mechanism of their protective structure.…

A: Invertebrates

Q: Which of the following is true about Sea urchin blastula formation and fate map? a) ectoderm that…

A: Sea urchins are spiny, round echinoderms in class Echinoidea. They show external fertilization and…

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: Which is not true of both platyhelminths and xenacoelomorphs Group of answer choices acoelomate…

A: Platyhelminthes are flatworms having many classes of triploblastic and are acoelomate flatworms that…

Q: Which of the following is not a characteristic found in sea stars? Walking on tube feet An…

A: Echinodermata  All are marine. Generally live at bottom and slow moving. Body shape is star like,…

Q: Compared to lissamphibians, _____ most amniotes are better adapted to aquatic lifestyles most…

A: Lissamphibians refer to the tetrapod group that involves modern amphibians. This group consists of…

Q: Most anatomists consider bats more specialized than moles; but what important differences can you…

A: Humans are covered with skin, feathers are covered by birds, and fur is covered by bats. But there…

Q: ach of the following is a critical difference between protostomes and deuterostomes except A.…

A: Protostomes are a group of animal species that descend from the same progenitors and undergo…

Q: Amniotic eggs, compared to non-amniotic eggs, are a useful adaptation for

A: Amniotic eggs have  extra-embryonic membranes such as amnion ,chorion and allantois which have…

Q: The AMNIOTES are a group of tetrapod vertebrates which lay their eggs on land or retain the…

A: Amniotes are those group of vertebrates that lay amniotic eggs on land and the fertilized egg is…