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

Q: At which stage of embryogenesis, major patterns of the internal tissues of the embryo have been…

A: Embryogenesis It is defined as a process which occurs after the process of fertilization of an…

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: Why is embryogenesis important in reptile specially in snakes?

A: Importance of embryogenesis in reptiles especially in snakes.

Q: Contrast the development of young in fish and amphibians.

A: Since most fish species undergo external fertilization, it only is sensible that, for the…

Q: Explain why amphibians are sometimes called “canaries in acoal mine.”

A: Sentinel species are the animals that used to find out the risks to human beings by providing and…

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: What are the stages of egg cell development in humans?

A: Oogenesis is the growth process of a primary egg cell into a mature ovum in the human female.  There…

Q: What do you call the movement in which the yolk plug is formed in amphibians?

A: Introduction:- The residual patch of endodermal cells generated after the formation of the dorsal…

Q: A coelom (Gr. koilos, cavity) is a body cavity completely surrounded by mesoderm; the band of…

A: Deutrosomes in the greek mean second mouth. It makes a nephrozoa clade with protostomia clade. They…

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: Investigate how the mass of the inert yolk affects reptiles, mammals and amphibians gastrulation

A: The development of multi-cell organic entities starts from a single celled zygote, which goes…

Q: Illustrate an egg in the morula stage. How does its size compare with that of the fertilizied egg?

A: MORULA STAGE OF EGG- It is an early stage of embryo consisting of 16 cells called blastomeres  which…

Q: segments of mesoderm that will form muscles are?

A: It is required to mention the segment of mesoderm that forms muscles.The formation of the three…

Q: How do reptile eggs differ from amphibian eggs? Why is this important?

A: The egg is the female reproductive unit and it is produced by the oogenesis process. It is haploid…

Q: Humans have a coccyx at the end of the vertebral column. What structure common to all vertebrate…

A: The coccyx is a triangular structure of bones near the bottom of the backbone, just below the…

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: Give an insight why pharyngeal pouches are important to learn/know.

A: Pharyngeal pouches These are the endodermal ou-pockets that are present between the pharyngeal…

Q: Explain the Tissue Stages of Development under Early Stages of Animal Development ?

A: The embryo in an animal develops, the cells start to divide, grow, and transfer in specific patterns…

Q: What are the correct pairings of developing and embryonic structures in the gastrulation of…

A: Gastrulation It refers to an early developmental process in which the transformation of embryo from…

Q: Compare the process of gastrulation in amphioxus and birds

A: Gastrulation is a process early in most animals' embryonic development during which the blastula is…

Q: Premature babies born before the 26th week of gestation develop physiological problems because…

A: Fetal development within the womb is called prenatal development. It is a process that occurs in…

Q: Which of the following mammalian structures is derived from one of the extra embryonic membranes?…

A: Introduction An extraembryonic membrane is one of the membranes that aid in embryo development. Such…

Q: In a reptile egg, the extraembryonic membrane thatencloses the embryo in a watery environment is…

A: Answer is b.) amnion.

Q: Which of these characteristics best promoted the survival of offspring in reptiles, birds, and…

A: Reptiles are vertebrates that are covered in special skin made up of scales or bony plates. They are…

Q: A fertilized egg, also called a________ , is a very large cell. One of the first events of animal…

A: Answers are :   A fertilized egg, also called a zygote, is a very large cell. One of the first…

Q: Explain the way in which the egg gets prepared for fertilization during oogenesis.

A: The process through which the male and female gametes combine to create the zygote is known as…

Q: Describe the four membranes in the avian egg. How does EACH membrane affect the developing embryo?

A: Avian egg development.

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: Differentiate extraembryonic and intraembryonic coelom in terms of location in embryos. Provide…

A: Coelom It is defined as the main body cavity present in most organisms. It is the mesodermally lined…

Q: During the creation of eggs, only one egg will be viable, the other 3 eventually break down. What…

A: Oogenesis is divided into three stages, which are the Multiplication phase, growth phase, and…

Q: Make a table to identify amle and female homologues and describe it common function. Minimum of 7…

A: Gender homologues are analogous or equivalent structures in males and females which perform the same…

Q: The “heart” of arthropods is located (ventrally/centrally/dorsally/sagitally)?

A: The “heart” of arthropods is located dorsally.The arthropods are known to possess an open…

Q: Compare and contrast morula, blastula, gastrula, embryo and fetus.

A: The sequential and highly regulated processes that occur from the fertilisation of an egg (zygote)…

Q: Explain the evolutionary advantage of the amniotic egg

A: Amnion is a membrane which enclose the embryo after it's formed.Embryo is the initial stage of…

Q: Identify the protein available in eggs and explain the significance or importance of such protein in…

A: Proteins are made up of amino acids. Amino acids are linked by peptide bonds, this simple structure…

Q: Name the mammal who has shortest gestation period.

A: Mammals are vertebrate animals that organize class Mammalia. They have mammary glands which produce…

Q: Why are the ectoderm and endoderm called the “germ” layer?

A: Gastrulation is the process of the embryonic development in which cell  movements establish the…

Q: A ball of cells that inside is full of cells is called?

A: Answer: The blastula is a hollow sphere of cells, referred to as blastomeres, surrounding an inner…

Q: Distinguish between the notochord and neural tube.

A: Fertilization is the first stage in the development of an embryo. The diploid cell called zygote is…

Q: write a paragraph that discusses the evolution of viviparity in amniotes.

A: Introduction viviparity is the development of embryo inside body of parent. Amniotes lay egg on land…

Tissue renewal

In multicellular organisms, tissue is a level of structure that consists of a group of physically and functionally identical cells and their intercellular substances. Unicellular organisms do not have tissues. Tissues are absent or poorly differentiated even in the simplest multicellular animals, such as sponges. However, more evolved multicellular animals and plants have specialized tissues that may organize and govern an organism's reaction to its surroundings. The word tissue is derived from the Latin word 'weave.' Plants and animals have various kinds of tissue systems that differ in their work and composition according to the different requirements.