Is the embryonic development in earthworms direct or indirect?

Q: Is the embryonicdevelopment in birds direct orindirect?

A: Animal developmental process can be direct or indirect. Direct development: It refers to the…

Q: Is the type and pattern of the cleave of an egg the same to all species of animals?

A: During the mitotic division, the cytoplasm of the egg is divided into multiple parts which then…

Q: What are embryophtes?

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

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 is a nauplius? What is the difference between direct and indirect development in Crustacea?

A: The ear is divided into the inner ear, middle ear or ear canal and the inner ear. The outer ear…

Q: What structural adaptation in chickens allows them to lay theireggs in arid environments rather than…

A: The vertebrate embryo requires an aqueous environment for their development. The amphibians and…

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: 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: Is there a larval stage in echinoderms?

A: The term Echinodermata was coined by Jacob klein in 1738 . Leucport in 1847 established the…

Q: What are some advantages of the pronounced cephalization that occurred as vertebrates evolved from…

A: Answer- Animals are adapted and evolved so that they can survive and reproduce well. In tetrapods…

Q: How does a molluscan coelom develop embryologically? Why was the evolutionary development of a…

A: Molluscs area unit found it nice ranges of habitats, from the tropics to the polar seas, at…

Q: During the embryological development of chordates, the midline dorsal layer of ectoderm folds in on…

A: In humans (a chordate), by the end of the third week of gestation, three basic germ layers…

Q: Explain the Type of protostome that produces atrochophore larva ?

A: Larvae are seen across the animal kingdom and are a specific juvenile form before they metamorphose…

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: Which type of cleavage leads to the development of a bird?

A:

Q: Explain how the flat embryonic disc takes on the cylindrical shape of a tadpole.

A: The embryo is the first phase of the development of the offspring. The life cycle starts shortly the…

Q: What is ovarian funnels in earthworm?

A: Earthworms are the members of the phylum Annelida of the kingdom Animalia.  The body of the…

Q: Where is the egg located in the archegonium?

A: In Bryophytes plants, the female and male sex organs are termed archegonia and antheridia…

Q: What kind of cleavage pattern characterizes snail development? Describe its orientation.

A: Snails, earthworms and flatworms are remarkably different animals, but they all exhibit a very…

Q: How is the process of gastrulation accomplished in mammalian embryos?

A: In developmental biology Gastrulation is the process that take place in the early embryonic…

Q: Is there a respiratory pigment in the annelid blood?

A: The annelids are also referred to as the segmented worms. Some examples are leeches and earthworms.…

Q: What was important about the development of the egg as a part of the reproductive cycle of animals?…

A: Yolk formation in humans

Q: In the sexual reproducing phyla Nematoda, are the animal’s hermaphrodites or separate  sexes?

A: Hermaphrodites are the animals which have both the sexes present in the same body i,.e they are able…

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: Did the arthropod body plan resultfrom new Hox genes?

A: Step 1 An arthropod is a phylum of triploblastic, haemocoelomic, segmented invertebrates having the…

Q: Compare and contrast gametogenesis in starfish and sea urchin.

A: Answer--

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: Briefly explain how and why the yolk distribution in mammalian eggs has changed from their…

A: According to Bartleby expert, when multiple questions are posted we are allowed to answer the first…

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: having a post-anal tail and gill slits are traits of all embryos belonging to which phylum?

A: Pharyngeal slits are openings in the pharynx that develop into gill arches in the bony fish and into…

Q: Describe embryonic gastrulation in protostomes vs. Deuterostomes

A: Protostomes:  The clade of animals originally thought to be characterised by the formation of the…

Q: Taenia saginata egg

A: Introduction:- Taenia saginata is also called beef tapeworm, it's a cestode parasite, in humans…

Q: Can the dorsal lip of the blastopore inducecells in another part of the amphibian embryoto change…

A: The dorsal lip of a blastopore is a structure formed during the early development of the embryo. The…

Q: Is a zygote a fertilized egg?

A: Fertilization is the process whereby gametes from each parent fuse to produce a new cell.

Q: What is the fate of the four extraembryonic membranes in embryos of placental mammals?

A: Any of the tissues, derived from the fertilized egg, that encase or in any case add to the help of…

Q: How do the eggs ovulated into the abdominal cavity find their way out of the frog’s body?

A: To understand the path of the egg we need to understand that frogs lay eggs. This process usually…

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: Distinguish two mechanisms by which flatworms supply yolk for their embryos. Which system is…

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: The egg of a fish is what type of chordate egg and why? a. isolecithal b. telolecithal with total…

A: All fish eggs are surrounded by using an envelope, referred to as the zona pellucida (ZP), that…

Q: The embryo below exhibits cleavage. radial bilateral spiral O modified

A: During developmental periods single cell zygote is transform into multicellular embryo by the…

Q: How are growth and development controlled in insects?

A: Insects are categorized as arthropods.