Explain the following terms: ectoderm, endoderm, mesoderm and stem.

Q: note on embryology and explain its different stages along with diagram?

A: Embryology or human embryogenesis is the development and formation of the human embryo. Cell…

Q: Discuss the following terms in detail: 1.1  Fertilisation  1.2  Cleavage   1.3  Gastrulation 1.4…

A: Gametes are defined as the reproductive haploid cells of the organism where they consists of 23…

Q: Compare and contrast between the following: (1) Medio-lateral intercalation and radial…

A: The layers of a human embryo, from innermost to outermost, are the endoderm, mesoderm, and ectoderm.…

Q: oogenesis.

A: oogenesis -In the human female reproductive system, growth process in which the primary…

Q: Write in detail the process of organogenesis in vertebrates. Give one example and make diagram also.

A: In embryology, Organogenesis can be described as a series of processes that lead to converting the…

Q: List the five regions of the mesoderm, and identify some major body parts derived from each region.

A: One of the three germ layers that lie between the other two germ layers called the ectoderm, and the…

Q: Briefly discuss avian early embryonic development, starting with fertilization and oviposition,…

A: Introduction  The life starts from single cell called Zygote. A zygote is formed by the fusion of…

Q: Draw the amphibian and avian unfertilized eggs. Label membrane coverings and orientation of…

A: Unfertilized eggs are the eggs that have not been fertilized by sperm.

Q: Define Endocycles(ovary)

A: Endocyles:                     Replication of the nuclear genome in the absence of mitosis, which…

Q: describe internal and external fertilization, and provide examples of animals that use each of these…

A: Reproduction is the biological process through which a new individual organism is produced. The…

Q: In terrestrial arthropods, fertilization is always internal (True/False)?

A: Arthropoda is the largest phylum in the animal kingdom, which includes such familiar forms as…

Q: Write a short note on fertilization in Riccia ?

A: These plants are small and thalloid, meaning they lack root, stem, and leaf differentiation. The…

Q: lame specific structure "A" Ovary lame specific structure "B" anther A-

A: The given figure it of a flower. Flower is considered to be a reproductive organ of the plant. If…

Q: Which of the following rows correctly identifies the development of the germ layers? Select one:…

A: The germ layers are an embryonic collection of cells that aid in the creation and development of…

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: Define ectoderm and andoderm?

A: Except the sponges, the growing embryo in all animals develops different layers of cells called as…

Q: Consider the variation in reproductive systems within the animal kingdom. These are discussed in the…

A: Refer to the solution

Q: Specify the molecule involved in each category (e.g. ECM: collagen, CAMs: cadherins, Cell junctions:…

A: Extracellular matrix ECM are a group of secretary proteins that are involved in holding the…

Q: Complete the following table with the organs/systems that arise from each of the germ layers Germ…

A: There are three embryonic germinal layers that covers the embryo. The outer layer is called…

Q: In anatomy lab, Thaya pointed to the vertebrae of a cadaver and said “sclerotome.” He pointed to a…

A: The three primary embryonic germ layers termed the ectoderm, mesoderm, and the endoderm function to…

Q: Identify the ways in which meiosis and fertilization together produce genetically diverse offspring.

A: Two generations of cells go through meiosis. Each chromosome is copied during normal cellular…

Q: Which primary germ layer (endoderm, mesoderm, & ectoderm) did each tissue description derived from?…

A: Gastrulation is a process included in embryogenesis. The cells of blastula arrange themselves in…

Q: What is fertilisation? Give examples

A: Human beings are sexually reproducing organisms. The male reproductive system consists of pair of…

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

A: Note: Sorry, since you have posted multiple questions, as per the honor code we will be authoring…

Q: What mechanisms have evolved in animals with(a) external fertilization and (b) internal…

A: The process that involves fusion of the male and female gametes namely sperm and ovum respectively…

Q: Comparision between coleoptile and coleorhiza?

A: Plants are autotrophs. They are called so because they are not dependent on other organisms and can…

Q: Place the following events in order of which would occur first to last: First Second Third Fourth…

A: Reproduction is the biological process by which new individuals of the same species are produced. It…

Q: Put “disappear”, if they disappear in the process of development and put the word “dissolved”, if…

A: Introduction Embryonic development is also called embryogenesis. It is the process where development…

Q: Describe development of an animal from zygote to infant.

A: A fascinating and complex process is the growth of an animal from a single fertilized cell, known as…

Q: Explain about The Megasporangium (Ovule).

A: A sporangium is the capsule structure that belongs to many plants and fungi, in which the…

Q: Consider the similarities and differences in the reproductive cycles (haplontic, diplontic, and…

A: All these life cycles are based on the haploid and diploid phases. This is called alternation of…

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: How is embryology different from developmental biology?

A: During their life cycles;most of the living organisms like plants and animals undergoes various…

Q: What is the phylum, genus, and name of the asexual structures pictured here? Phylum? Genus? Name of…

A: In kingdom Plantae,the vast diversity of plants are observed ,which contains different asexual and…

Q: In the cnidaria the ectoderm cells are important because they can react to a stimulus (light) from…

A: Cnidaria possess two layers, endoderm and ectoderm. The gastrodermis, or inner lining, is formed by…

Q: Match each letter with the corresponding structure for letters A-E. -Sucker -Hooks -Uterus…

A: Tapeworm is also called as flatworms, comes under the category of platyhelminthes. This is a…

Q: In embryos with spiral cleavage the 4d cell gives rise to which germ…

A: INTRODUCTION Mesoderm It is a germ layer formed during gastrulation. Present between ectoderm and…