What is cephalization? How does lateral symmetry favor cephalization?

Q: What are some advantages of cephalization?

A: Cephalization is the concentration of sense organs and nervous system control at the anterior head…

Q: What are embryophtes?

A: Plants are mainly multicellular organisms, predominantly photosynthetic eukaryotes of the kingdom…

Q: What is external cephalic version?

A: External cephalic is a type of external rotation of fetus in utero.The physician rotates the fetus…

Q: How is a zygote formed?

A: Sexual reproduction: It is a type of reproduction that involves the fusion of gametes. It required…

Q: What is the thick connective tissue layer that surrounds the parenchyma of the ovary called?

A: Ovary is the female reproductive organ.It has distinctively two regions: cortex which contains…

Q: What primary germ layer gives rise to the notochord? What is the function of the notochord?

A: Notochord It is a flexible, rod shaped body found in embryos of all chordates.

Q: What is the embryonic sac?Which are the cells that formthe embryonic sac? What aretheir ploidies?

A: The angiosperms are vascular plants that produce flowers and fruits, and they belong to the phylum…

Q: What is amniotic fluid?

A: Fetal membranes are not a part of the body of the embryo. These membranes play some role in the life…

Q: Where does fertilization takes place in human female?

A: The human female reproductive system includes a pair of ovaries, oviducts, uterus, vagina, vulva,…

Q: Name the third tier of embryonal cells in pinus formed.

A: All plants come under the kingdom Plantae. They are eukaryotes, multicellular, and having cell…

Q: What is the zygote stage?

A: The process of embryogenesis and fetal development initiate after the event of fertilization. It is…

Q: What is embryos

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

Q: Where is zygote formed?

A: Zygote is a diploid cell formed by fusion of male and female gametes. It then undergoes mitotic…

Q: What is an amnion?

A: The question asks about the amnion.

Q: What is the difference between a mesoderm and a mesoglea?

A: Diploblastic animals contain body wall which develop from 2 embryonic germ layer - ectoderm and…

Q: How does the egg get from the ovary to a fallopian tube?

A: Reproduction is essential for the production of the healthy offspring and it is not necessary for…

Q: How big is a zygote?

A: A zygote is a cell that forms as a result of fertilization or fusion of male and female gametes. The…

Q: What are extraembryonicmembranes?

A: The embryology is the study of the formation and development of embryonic structures right from the…

Q: What is ejaculatory duct and its function in cockroach?

A: Cockroaches (Periplaneta americana) fall under the phylum Arthropoda of the class Insecta.

Q: Name the embryonic membranes and give the importance of each

A: Embryonic membranes are the membranes that lead to the development of the embryo in the mother's…

Q: What are the cells producedin the first stage of theembryonic developmentcalled?

A: The process in which the embryo forms and develops is known as embryonic development.

Q: What is the cell divisionduring the first stage of theembryonic developmentcalled? How is this…

A: The process by which a parent cell divides into two identical daughter cells, is called Cell…

Q: What is the difference between zygote and embryo?

A: The process of embryogenesis and fetal development initiate after the event of fertilization. It is…

Q: After the blastula stagewhat is the following stage ofthe embryonic development?What is the passage…

A: The process by which the embryo forms and develops is known as embryonic development. It includes…

Q: Which ovary is functional in birds?

A: Ovary is the female reproductive organ found in lower chordates to higher animals. Ovary produces…

Q: . How does the fertilization envelope form in sea urchins?What is its function?

A: Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete…

Q: w does the fertilized egg give rise to the adult

A: Life begins with a single cell known as a Zygote. The single diploid cell produced by the merging of…

Q: What happens during the cephalic phase

A: Cephalic Phase is the first of three phases of body's response to sight/ thought or ingestion of…

Q: What happens if fertilization takes place in utreus?

A: Reproductive system (or genital system) is used for the sexual reproduction. The female attains…

Q: Which type of symmetry is associated with cephalization?Why is it important? What is usually…

A: Symmetry, in biology, the repetition of the parts in an animal  in an orderly fashion. Symmetry…

Q: What is the importance of sensory cephalization in animal survival?

A: Cephalization is the process in animals by which nervous and sensory tissues become concentrated in…

Q: What happens to the second sperm nucleus, the one that does not fertilize the egg cell? What is the…

A: Sexual reproduction is a fusion of male and female gametes to produce offspring from the zygote.…

Q: What is the first appearance of embryonic callus?

A: Callus is defined as an unorganized tissue mass growing on solid substrate. Callus forms naturally…

Q: What is gonads?

A: Human reproduction is the union of male and female gametes generated in the reproductive system.…

Q: Which germ layer does structure #5 arise from?

A: The given image depicts a chicken embryo after about 33 hours of fertilization. At this stage, the…

Q: What is a fertilized egg called?

A: Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete…

Q: What is fertilized egg known as?

A: Fertilization When male gamete fuses with female gamete, this process is known as fertilization.

Q: What other developmental hallmarks are often associated with spiral or radial cleavage?

A: Based on the directions and angles the cleavage furrow cuts, cleavage is of four types, namely,…

Q: How does the sperm reach upto egg and how does it enter into the egg?

A: Fertilization is the process in which a sperm and egg are fused together in the uterine tube of the…

Q: What is ripened ovary known as?

A: Plants are mainly multicellular organism, predominantly photosynthetic eukaryotes of the kingdom…

Q: How strobili are differentiate between male and female?

A: A strobilus is a reproductive structure characterized by overlapping scale-like parts, as a pine…

Q: What is the difference in gastrulation and blastula process?

A: Answer : the difference between gastulation and blastula process is :    Gastulation is the stage of…

Q: What are gonads? What arethe male and the femalegonads in humans?

A: Reproduction is the biological process by which new individual organisms – offspring, are produced…

Q: Describe the location and structure of: (1) the ovary,(2) the cervix, and (3) the labia.

A: The female reproductive system consists of the ovary, uterus, fallopian tubes and vagina. The…