Q: Name the process of development of egg into young one without fertilization?
A: The above-mentioned definition is true for parthenogenesis. It is a type of asexual reproduction…
Q: Enumerate and describe the patterns of cleavage exhibited by the frog.
A: Cleavage is a process that occurs in early embryogenesis, whereby a single fertilized egg cell (the…
Q: Define Reptiles: Amniotic Egg ?
A: There are two types of eggs on the basis of amniotic membrane - amniotic and anamniotic eggs.…
Q: Explain the advantages and disadvantages of self fertilization in these flatworms
A: Flatworms are the organisms that belong to the phylum “Platyhelminthes’. These organisms are…
Q: What are placental mammal ? Explain the role of placental mammal ?
A: Placental mammals are a diverse group, with nearly 4000 species described, the majority of which are…
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: describe the evolutionary advantage that the cleidoic egg provided to terrestrial organisms.
A: The Cleidoic egg is a form of egg inhabited with the useful resource of reptiles and birds. Replica…
Q: Compare the reproductive organs of reptiles and birds. How are their reproductive patterns…
A: Although anatomy and physiology varies greatly among the diverse class Reptilia, the basic structure…
Q: Write the Patterns of embryonic cleavage and whole mechanism of cleavage. Write gastrulation in sea…
A: Cleavage is the division of cells in early embryo. There may be equal or unequal divisions.
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: Aquatic animals in which fertilisation occurs in water are said to be: (a) viviparous without…
A: Animals show two types of fertilization that includes external fertilization and internal…
Q: What would happen if two sperm fertilized the same egg cell? If twosperm fertilized two egg cells?
A: Step 1 Fertilization and implantation is the process of fusion of two types of gametes (spermatozoa…
Q: Compare the male and female reproductive organs of reptiles and birds. Explain how are their…
A: Introduction Reptiles are cold-blooded animals that have vertebral columns at their backs. These…
Q: Compare the structures of the egg and sperm. What structural modifications do sperm have that…
A: The process of producing new organisms from the pre-existing ones is called reproduction. It may be…
Q: makes short notes on the examination of the adult and larval stage of the tsetsefly
A: The mating of tsetse fly occurs on host animals. The male settle on the female back. Females are…
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: Does sand temperature determines the sex of sea turtles? Discuss.
A: In some organisms the sex is determined before fertilization and in some organisms such as reptiles…
Q: Describe internal fertilization process in sea urchin.
A: The process of internal fertilization occurs when a male and female gamete fuse inside the female…
Q: Create a diagram showing the evolution of the urogenital system for the seven vertebrate classes.
A: The urogenital system is meant by the urinary as well as the genetal or reproductive system. The…
Q: Compare and contrast the mechanisms of egg activation in internal versus external fertilization.
A: Fertilization is part of sexual reproduction, responsible for the fusion of gametes. In case of…
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: . 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: Where does the fertilization of a human egg normally take place?
A: Fertilization is the process of combining haploid gametes (egg and sperm) to produce a diploid…
Q: What is the function of the arachegonium? O a. To carry out a sexual reproductive O b. To produce…
A: An archegonium is a multicellular construction or organ of the gametophyte period of specific…
Q: Concerning the occurrence of separated sexes how are the beings of the phylum Annelida classified?
A: All the animal species on Earth are classified into different phyla or groups. The phylum Annelida…
Q: Differentiate Protostomes from Deuterostomes in terms of the formation of germ layers
A: Developmental biology describes how interacting mechanisms generate an organism's various size,…
Q: Explain how an earthworm demonstrates cephalization
A: CEPHALIZATION It is an evolutionary trend in which the mouth, sense organs, and nerve ganglia become…
Q: What distinguishes an amniotic egg from eggs laid by other animals, including fishes, amphibians,…
A: Amniotic eggs are eggs layed by reptiles and birds. The organisms which lay these eggs are called…
Q: Cleavage Gastrulation Neurulation Organogenesis
A:
Q: Explain gastrulation in fish
A: Gastrulation in Fish: - Gastrulation is defined as a process in which gastrula is formed from a…
Q: Differentiate Protostomes from Deuterostomes in terms of germ layer formation
A: The most significant difference between protostomes and deuterostomes arises due to the…
Q: Describe the path of a mature egg that is released and fertilized.
A: An egg is a female gamete and is released by the ovaries. At its release, it is at secondary oocyte…
Q: Compare and contrast the development process of the starfish and the sea urchin.
A: Introduction:- Embryonic development: all the developmental processes from zygote to tissues and…
Q: Part IlI: Discussion 1. How can you distinguish an unfertilized egg from a fertilized egg? 2. As…
A: Fertilization is a natural phenomenon of producing mature male(sperm) and female(egg) gamete in…
Q: Elaborate on the oviposition process of female turtles. Provide the pathways included in the…
A: INTRODUCTION Any reptile having a bony shell, including tortoises, is classified as a turtle in…
Q: From what the amnion of mammalian embryo is derived?
A: Amnion is an extraembryonic membrane also known as fetal membrane along with chorion, allantois, and…
Q: mine which end is its head and which is its tail?
A: Mammalian embryogenesis can be defined as the process of cell division that involves cellular…
Q: Is a zygote a fertilized egg?
A: Fertilization is the process whereby gametes from each parent fuse to produce a new cell.
Q: describe the advantage that cleidoic egg gave to terrestrial organisms
A: At the same time as repltiles are the first to have residing eggs on the earth, birds have an…
Q: What changes in egg design allowed reptiles to lay egg on land?
A: The theory of evolution by natural selection suggests that due to the dissimilarities in their…
Q: What is fertilized egg known as?
A: Fertilization When male gamete fuses with female gamete, this process is known as fertilization.
Q: Compare gastrulation in the frog and the chick
A: The sperm and egg fuse to together to form a zygote, after eighth cell stage, the blastula is…
Q: Summerize various metabolic events involved in cleavage and blastulation in different animals.
A: The development of multi-cellular organisms begins from a single-celled zygote, which undergoes…
Q: Sponges exhibit indirect development.
A: Answer: Fertilization is the process takes place internally or externally between male gamete or…
Q: explain the Evolution of the reproductive organs from sponges to Chordates.
A: Some 750 million years agone, the last common spongey antecedent of all animals diverged, Pisani…
Q: Where does the embryo get oxygen and release carbon dioxide? Hint: Where do vascular systems come…
A: From the given question, the given embryo is assumed to be bird’s embryo.The early stage of the…
Q: Is the embryonic development in earthworms direct or indirect?
A: The earthworm is a hermaphrodite organism in which both male and female reproductive organs are…
Q: If a girl started at the age of 14 and continued until the age of 49,calculate the number of eggs…
A: According to the menstrual cycle, A woman has the ability to view let only one egg per menstrual…
Illustrate an egg in the morula stage. How does its size compare with that of the fertilizied egg?
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- Describe internal fertilization process in sea urchin.Explain how the flat embryonic disc takes on the cylindrical shape of a tadpole.The largest cycloneuralians are also the only ones with external fertilization. Which phylum is this? Explain the relationship between adult body size, mode of fertilization, and type of larval development in marine invertebrates.
- Explain gastrulation in fishCompare human and sea urchin development prior to and after the gastrula stage.Study the sea star development slides, including early and late stages and identify the following stages and structures: zygote, two cell stage, morula (stage), blastula (stage), blastocoel (cavity), archenteron (cavity), ectoderm (layer), endoderm (layer), gastrula (stage). **See Table 52.1, Section 52.3 & 52.4 in textbook ** Why is it useful to study the development of sea stars (Echinodermata) when studying human development? What do the two have in common?