Q: Which of the following groups include at least some members that exhibit internal fertilization?…
A: Internal fertilization is the process of fertilization that occurs inside the body of an individual.…
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A: Sawfly larvae ( belonging to order Hymenoptera) are immature stages of wasps or bees that have…
Q: Which process occurs between the zygote and the embryo stage
A: Fertilization is the process of fusion of the male gamete and the female gamete, resulting in…
Q: astrulation, are there any evidences of cephalization? Why or why not?
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Q: Both ocelli and statocysts are composed in part of nerve tissue. True False
A: Answer : Both ocelli and statocysts are composed in part of nerve tissue. false.
Q: If the egg is fertilized it will develop in the
A: Fertilization is the process of a sperm fusing with an ovum. When the egg moves down the Fallopian…
Q: The sponge choanoderm is derived from endoderm. O True False
A: The germ layers are ectoderm, mesoderm and endoderm. this three germ layers are responsible for the…
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: Spiral cleavage can occur in both deuterostomes and protostomes (True/False)?
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A: Placenta is an organ which helps in providing oxygen and nutrients to growing baby and removal of…
Q: postanal gut?
A: Introduction Take out of digestive Cdx2 produces various results relying on the formative stage at…
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: An animal cannot be acoelomate if it is also triploblastic (True/False)?
A: An acoelomate is an animal which lacks a coelom, or formal body cavity. True body cavities form only…
Q: Match the germ layer with the correct derivative Gastrodermis v [ Choose ] Ectoderm Endoderm…
A: There are 3 germ layers ectoderm, mesoderm and endoderm giving rise to different organs in…
Q: Compare human and sea urchin development prior to and after the gastrula stage.
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Q: what structure is the pointer pointing to? O Notochord what germ tissues are those structutres made…
A: There are different types of body structures, each specified for a particular function. These…
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: Archegonium is an example of female gametangium in plants, which produce motile egg cell.
A: Ans- False Explanation- Archegonium is the female reproductive organ occurs in ferns, mosses and in…
Q: Match the germ layer to its derivative Neural tube V [ Choose ] Ectoderm Endoderm Mesoderm…
A: Cells of Germ layers grow and divide to produce different parts /organs of body of an organism.
Q: Gastrulation in birds and mammal
A: Gastrulation is the process during embryonic development that changes the embryo from a blastula…
Q: Define the following terms with respect to mammalian development •Chormesodermal mantle •Somites…
A: Mammalian development It is defined as the process of division of cells and differentiation of cells…
Q: If radial cleavage occurs during development, the animal will be a deuterostome (True/False)?
A: Deuterostome in greek mean second mouth. It make a nephrozoa clade with protostomia clade. they are…
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A: Vertebrata is a phylum in which the animals have a vertebrae or vertebral column to support the body…
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Q: Recent fossil evidence shows a placoderm with a developing embryo inside its body. In the absence of…
A: The fossil, Materpiscis attenboroughi, which is related to placoderms in Devonian period, showed the…
Q: Explain the following terms: ectoderm, endoderm, mesoderm and stem.
A: Animal phylogeny is a rapidly changing field. The biologists mostly depend on the fossils to compare…
Q: Muscles are formed by the Group of answer choices A. ectoderm B. mesoderm C. endoderm
A: Muscle is defined as a group or collection of muscle tissues that contract collectively to create…
Q: Cleavage Gastrulation Neurulation Organogenesis
A:
Q: Taenia saginata egg
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A: Introduction :- Mammals are divided into three types :- Monotremes , marsupials and mammals etc. The…
Q: Read the following statements and choose the option with only correct statements. (a) Tympanum…
A: Tympanum is the membrane which separate external ear and internal ear. When sound waves rreaches…
Q: Make a flowchart to show early embryonic development in humans. Start with the zygote
A: Life starts from a single cell called Zygote. A zygote is formed by the fusion of the male gamete…
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A: During gastrulation, the hollow sphere of balls called blastula develops into a gastrula.…
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A: Both Planaria and Taenia belong to the Platyhelminthes phylum in the animal kingdom.
Q: organs of reptiles and birds
A: The biological system of an organism's reproductive system, often known as the genital system, is…
Q: What is the third layer that forms as a result of gastrulation in some animals? mesoderm endoderm…
A: Gastrulation is the cycle during early stage advancement that changes the incipient organism from a…
Q: Number these steps in vertebrate embryogenesis in order. ______ formation of archenteron…
A: The embryonic development begins after fertilization that involves fusion of male and female…
Q: True or false male sea urchins release sperm at the optimal concentration for fertilization
A: There are many challenges for sea urchins in order to fertilizer gametes under water. They undergo…
Q: Primitive streak formation is a critical process that occurs during the third week of human…
A: Primitive streak formation is a critical process that starts during the third week of development of…
Q: In the blanks below, identify the essential developmental process (NOT developmental stage)…
A: The every organism's embryo undergo the different developmental stages so that all the structures…
Q: Division of human egg is a) Holoblastic and equal b) Holoblastic and unequal c) Isoblastic d)…
A: Introduction - One of the largest cells in the human body is the human egg, or ovum. It is, however,…
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: In two paragraphs, Explain, discuss and elaborate the Animal Reproduction and animal development
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Q: Which of the following statements is true: O invagiantion is folding of cells that happens early in…
A: Blastocoel is a fluid filled cavity in blastula. First the morula(60 or more cells) is formed then…
Q: Define cellular blastoderm
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A: answer 1 ) Layer 1: The tympanic film is the grown-up structure that outcomes from the primary…
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A: Tinea sodium is also known as the pork tapeworm. It belongs to a cyclophyllid cestode family of…
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- Which is false about animal xygote? it's produof fertilized egg it's totipotent stem cell rise in ecto meso and endoderm only debelop inside mother all above are trueWhich feature is found only in gnathostomes? both pelvic and pectoral fins or appendages neural crest cells a cartilage support in the tongReproductive characteristics and structures of sleected invertebrates and vertebrates. Fill in the blanks. SPECIMEN SEXUAL FORM EXTERNAL MORPHOLOGY GONADS ACCESSORY STRUCTURES Taenia solium Ascaris suum Pheretima Rhinella marina Mammalian model
- Along the notochord, segmented blocks of tissue that give rise to muscles, vertebrae, and connective tissues are calleda. neural crests.b. morulas.c. primitive streaks.d. somitesWhat are the correct pairings of developing and embryonic structures in the gastrulation of chickens? Multiple answers is possible. If no correct option is given write the proper pairings. a. Epiblast – ectoderm b. Secondary hypoblast – endoderm c. Primary hypoblast – endoderm d. Migrating cells - mesodermThe cells that pull the archenteron through the blastocoel in the sea urchin are _____ cells called mesenchyme Group of answer choices A. mesoderm B. endoderm C. meroblastic D. macrolecithal
- In mammals, distinguish and differentiate the following germinal layers. Identify the organs that will arise from each of them: 1. Endoderm 2. Mesoderm 3. EctodermEnumerate the types of morphogenetic movements employed by vertebrate embryos in gastrulation. Give examples for each type. Type Drawing Example of structure/organism Invagination InvolutionIn terrestrial arthropods, fertilization is always internal (True/False)?
- The outermost germ layer in a vertebrate gastrula is the____ . a. endoderm c. mesoderm b. ectoderm d. dermisIn Deuterostomes, nutrient molecules (monomers) are taken in to the space between the endoderm and the ectoderm because... A) The ectoderm makes protein for movement B) The endoderm cells release hydrolytic enzymes that act on polymers C) The endoderm releases enzymes that conduct dehydration synthesis of proteins D) mRNA polymerase causes hydrolysis of DNA E) All are correct Explain whyWhich of the following cell layers is not necessary to be considered a eumetazoan? a. Ectoderm b. Endoderm c. Mesoderm d. All of the above are found in all eumetazoans.
