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: 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: 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: 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: 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: 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: 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: 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…

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.