During the embryological development of chordates, the midline dorsal layer of ectoderm folds in on itself, forming a hollow tube (see illustrations above). This tube is the origin of the vertebrae. notochord. nerve cord. digestive tract. blood vessels.

Q: completely converted into the water-vascular system. restricted to a small space around the gonads.…

A: Echinoderms have a spacious coelom (an open, fluid-filled body cavity lined with tissue), large…

Q: Determine in detail about four extraembryonic membranes of amniotic eggs of birds as well as other…

A: Introduction: The extraembryonic membrane aids in the development of the embryo. These membranes are…

Q: What two germ layers develop in the embryos of diploblastic animals? Check the two that apply.…

A: The two germ  layers of cells found in diploblastic animals are the outer ectoderm and the inner…

Q: Which feature is found only in gnathostomes?     both pelvic and pectoral fins or appendages…

A: Gnathostomes are those organism who have jaws in their body. It includes two groups: Pisces: It…

Q: Study the sea star development slides, including early and late stages and identify the following…

A: Introduction :- Echinodermata is a phylum of marine invertebrates that includes starfish (also known…

Q: Aristotle classified all warm-blooded fur-covered tetrapod vertebrates that give birth to live young…

A: The objective of the question is to identify the correct classification of warm-blooded, fur-covered…

Q: During embryonic development, which type of cleavage pattern leads to the development of a bird?…

A: In developmental biology, embryonic development, also referred to as embryogenesis, is that the…

Q: If activity of the organizer is inhibited, what does the embryo become? A mass of notochord. A mass…

A:

Q: (A) Explain clearly the developmental and evolutionary significance of the neural crest within the…

A: Neural crest: it is found in vertebrates. Neural crest cells are derived from ectodermal layer of…

Q: Developmental patterns between protostomes and deuterostomes Developmental Pattern Protostomes…

A: The coelomates can be described as organisms that contain hollow space surrounded by the other…

Q: Reproductive characteristics and structures of sleected invertebrates and vertebrates. Fill in the…

A: Invertebrates and vertebrates are organisms classified on the basis of the presence of backbone in…

Q: Give the process of internal fertilization in turtle. Show illustration how the fertilization…

A: Turtles are a type of reptile known as Testudines. They are distinguished by a shell made primarily…

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: In the frog embryo, convergent extension elongates the notochord. Explain how the words convergent…

A: The embryo is known to be the early stage of development of a “multicellular” organism. The…

Q: In mammals, distinguish and differentiate the following germinal layers. Identify the organs that…

A: Introduction :- Mesoderm interacts with endoderm and ectoderm during organogenesis to give rise to…

Q: Enumerate the types of morphogenetic movements employed by vertebrate embryos in gastrulation. Give…

A: Gastrulation is a process that takes place in the early developmental period. In this process a…

Q: germ layer present / levels of organization and coelom   specimen type of animal based on number…

A: In most animals, the coelom (or celom) is the main body cavity that surrounds and contains the…

Q: Bilaterally symmetrical animals have________embryonic tissue layers, known as________ ,___________,…

A: The embryo undergoes various types of changes in order to form a developing fetus. During the…

Q: Spermatogenesis and oogenesis

A: Oogenesis is the growth process where the primary egg cell or ovum becomes a mature ovum. There are…

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: The notochord develops primarily from (a) ectoderm, (b) neural crest, (c) mesoderm, (d) endoderm.

A: The process of embryonic development that begins at the end of gastrulation and lasts until birth is…

Q: Cleavage Gastrulation Neurulation Organogenesis

A:

Q: extra-embryonic

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

Q: In protostomes and deuterostomes, the space between the endoderm and the ectoderm is important…

A: The space between the endoderm and the ectoderm is important in the evolution of protostomes and…

Q: Can the dorsal lip of the blastopore inducecells in another part of the amphibian embryoto change…

A: The dorsal lip of a blastopore is a structure formed during the early development of the embryo. The…

Q: Which structure of the following forms the embryonic axis? Primitive streak Notochord Primitive knot…

A: Animal embryonic development, also known as embryogenesis, is the stage of development of an animal…

Q: Which of the following options represent examples of deuterostomes? [check all that apply]. Mammals…

A: On the basis of formation of mouth, animals can be deuterostomes and protostomes.

Q: Compare the role of notochord in the early development of vertebrates and invertebrates.

A: introduction Animals lacking a skeletal system are known as invertebrates. As a result, the majority…

Q: Which of the following describes the importance of the formation of the morula in early human…

A: The fertilization leads to development of the first diploid cell which is called a zygote. By day…

Q: Describe the pre-gastrulation morphogenesis found in Amphibian development.

A: The pre-gastrulation morphogenesis found in Amphibian development is an important process that sets…

Q: Earthworm Cross Section (Annelid Cross Section) Describe each function in the earthworm…

A: Earthworm is a reddish brown terrestrial invertebrate that in habits the upper layer of moist soil.…

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: Draw and describe the two types of fertilization. Which representative chordates exhibits each type…

A: Reproduction is the biological process of producing offspring for their parents. It is an essential…

Q: Which of the following structures give rise to pharyngeal (branchial) arches cranial nerves O Neural…

A: Introduction :- Pharyngeal arches are two structures that grow on either side of the growing…