Q: Is the embryonicdevelopment in birds direct orindirect?
A: Animal developmental process can be direct or indirect. Direct development: It refers to the…
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: What are three notable features between the fertilized and unfertilized egg?
A: Sperms and eggs are the gametes produced by male and female animals respectively in sexual…
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: How is the mesoderm(third germ layer) oftriploblastic animals formed?
A: The germ layers develop early in embryonic life, through the process of gastrulation. Triploblastic…
Q: What are embryophtes?
A: Plants are mainly multicellular organisms, predominantly photosynthetic eukaryotes of the kingdom…
Q: What is the advantage of external fertilization over internal fertilization
A: Advantages of external fertilization over internal fertilization - 1. The number of offspring…
Q: Give the differences between mammalian and frog oogenesis. OOGENESIS MAMMAL FROG 1. 2. 3.…
A: The difference between the mammalian and amphibian (frog) oogenesis are as follows:
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: Which of the following steps of sea urchin fertilization initiates the formation of the…
A: Fertilization is the union of male ( spermatozoa ) and female ( ovum ) gametes which results in the…
Q: External fertilization occurs in which type of environment? a. aquatic b. forested c. savanna d.…
A: “External Fertilization” is a process of reproduction in which the “male gamete” (sperm) and the…
Q: What is self-fertilization?
A: Reproduction is a property shown by living organism in which one organism (parent) gives rise to new…
Q: Why do sea urchins have external fertilization? What are the adaptive advantages of external…
A: Fertilization, also referred to as syngamy, generative fertilization, and impregnation is the fusing…
Q: Why are the offspring of a male and a hermaphrodite more variablethan the offspring of a…
A: Hermaphrodites in reproductive biology are organisms that have both male and female sex organs. For…
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: 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: n the ventral surface of the embryo series of tissue blocks lateral to the neural tube a…
A: somures eventually differentiate into dermis, skeletal muscle, cartilage, tendons, and vertebrae.
Q: Label each tissue with the specific source germ cells: v Gastrointestinal tract A. Intermediate…
A: We are tripoblastic organisms that means we contains three types of germ layers that includes…
Q: what reproductive challenges do female sea turtles face ?
A: Sea turtles, sometimes called marine turtles, are reptiles of the order Testudines and of the…
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: Does the distribution of Ca²+ in an egg correlate with formation of the fertilization envelope?
A: During fertilization, sperm-induced rise in cytoplasmic Ca2+concentration.
Q: In what way fertilization different between plants and animals?
A: Introduction All plants and creatures across the world replicate some or another way, as an…
Q: "What is the advantage of internal fertilization over external fertilization and vice versa"?
A: The natural cycle by which new individual creatures – "offspring" – are delivered from their…
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: In frog neurulation the notochord _______ the formation of the _______ in the ectoderm next to it.…
A: ANSWER) (a) expresses, neural plate
Q: Which tissue type or organ is correctly matched with its germ layer tissue? A) nervous–mesoderm B)…
A: Introduction :- The mesoderm is a germ layer that develops between the ectoderm, which produces skin…
Q: How do the two kinds of mammalian reproductive cycles—estrous and menstrual—differ from each other?
A: The reproductive cycles refers to the change in the physiological changes in the reproductive organs…
Q: In what ways do a bull’s reproductive organ structures differ from that of the human? How are the…
A: The reproductive system(male and female) is a complex system with a number of interconnected…
Q: Which statement below is FALSE regarding the differences between sea urchin and mammals? Select an…
A: Sea urchins belong to the group of Echinodermata. They appear to be globe-shaped, spiked and found…
Q: The cortical reaction of sea urchin eggs functionsdirectly in(A) the formation of a fertilization…
A: Sea urchins are the globular animals that belong to the class Echinoidea. They come under the…
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: Hermaphroditic animals can self-fertilize, except earthworms. Why? And is this an advantageous or…
A: Earthworms are bisexual, which means male and female regenerative organs are available in same body.…
Q: Describe external fertilization process of sea urchin egg with diagram
A: Fertilization in sea urchin occurs solely through the external process in which egg and sperm fuse…
Q: What is the advantage of internal fertilization over external fertilization and vice versa?
A: Question - What is the advantage of internal fertilization over external fertilization and vice…
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: What are the consequences of the differences in the yolk amount and distribution of eggs among…
A: The amount and distribution of yolk inside the egg decides the pattern of cleavage. The type of…
Q: What are the advantages and disadvantages of internal fertilization over external fertilization? How…
A: Internal fertilization - It is the fusion of egg and sperm during sexual reproduction inside the…
Q: Describe the step-by-step fertilization process in an amphibian. (Please include the structures…
A: Amphibians are the organisms that belong to the class Amphibia. As the name amphibians are Greek…
Q: Why do sea urchins have external fertilization?
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Define the function of fat body and kidney in frog reproductive system?
A: The excretory system and reproductive system of the frog are combined into 1 system which is called…
Q: In comparing external and internal fertilization, what evolutionary change can be seen in the coats…
A: In sexual reproduction, the process of fusion of two gametes to form a zygote is known as…
Q: What are the 4 major events comprising the process of fertilization?
A: Note: As Per Bartleby Guidelines only one question is answered. For further answers repost the…
Q: What is the difference between the testes of shark and frog?
A: Testes are the male reproductive organ that is responsible for producing spermatozoa or male…
Q: How does internal fertilization facilitate life on land?
A: Internal fertilization occurs inside the body of a female individual. Mostly internal fertilization…
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- What are the roles of the chorion and amnion in terrestrial vertebrate embryos?Which of the following steps of sea urchin fertilization initiates the formation of the fertilization envelope? A Acrosomal reaction Fast block to polyspermy Egg activation Cortical reaction Chemo-attractionWhat primary germ layer gives rise to the notochord? What is the function of the notochord?
- Which of the following is true about Sea urchin blastula formation and fate map? a) ectoderm that develops into the larval skin and neurons, is regularly produced by the vegetal half of the embryo. b) an1 layer generates cells that can enter either the ectodermal or endodermal organs of the larva. c) veg2 layer forms the endoderm, coelom (internal mesodermal body wall), and the non- skeletogenic mesenchyme. d) small micromeres differentiate into the PGCS e) large micromeres differentiate into the secondary mesenchyme cellsWhich ovary is functional in birds?Give the process of internal fertilization in turtle. Show illustration how the fertilization happens inside the turtle
- What is the importance of sensory cephalization in animal survival?Why is it necessary for the egg to have changes leading to polyspermy blockduring fertilization?What mechanisms have evolved in animals with(a) external fertilization and (b) internal fertilizationthat help offspring survive to adulthood?