Q: Explain the process of spermatogenesis and oogenesis in vertebrates.
A: Spermatogenesis is the by which sperm cell develops. Oogenesis is the growth process by which the…
Q: Define asexual reproduction, and describe four forms of asexual reproduction in invertebrates.
A: Reproduction is the biological process by which new offspring are produced from parents, which is…
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: Male sea urchins release sperm at the optimal concentration for fertilization a. true b.false
A: Sea urchins are spiny globular echinoderms that are found in all oceans and depth zones.
Q: In mammals, the male gonad is called the______ . It produces both sperm and the sex hormone________…
A: Testes, the male gonads develop high in the abdominal cavity during the last two months or after…
Q: Differentiate between following. a. specification and determination in development b. anisogamy and…
A: a. specification and determination in development If a cell/tissue is capable of differentiating…
Q: different phases and stages of the estrous cycle
A: The estrous cycle has four stages in particular proestrus, estrus, metestrus and diestrus and goes…
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: Describe the events that follow contact of a spermatozoon with an egg and explain Polyspermy and the…
A: The term "embryogenic development" is sometimes used. This procedure involves the embryo's creation…
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: Contrast the biological advantages of hermaphroditism that involves cross-fertilization with…
A: Hermaphroditism is referred to as intersex which is a condition in which there is a discrepancy…
Q: Draw the chromosomes in the zygote (cell after fertilization) egg cell fertilization sperm cell
A: Sperm cell is the male gamete and egg cell is the female gamete. Gametes are haploid in nature. Male…
Q: Sexual dimorphism may have evolved due to
A: Sexual dimorphism : It is the condition where two sexes of the same species exhibit different…
Q: An organism with both male and female sex organs is bisexual hermaphrodite both hermaphrodite and…
A: An organism with both male and female sex organs is?
Q: What determines the sex of the fertilized egg? Please provide examples like research experiments…
A: Fertilization occurs when a sperm cell encounters an egg cell successfully in the fallopian tube.…
Q: With a line diagram,trace the roots of the sperm from it's point of production to the point in…
A: The primary sex organs - testis in males and ovaries in females produce gametes i.e. sperms and ovum…
Q: If the egg is not fertilized in mammals, the endometrium is shed as
A: Introduction: The inner layer is the endometrium. During a woman's menstrual cycle, hormones cause…
Q: Alage are characterized by multicellular sex organs in which every cell forms the gamete. Give…
A: Algae are significant because they are the primary producers of biomass in the aquatic ecosystems.…
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: Illustrate a model of female reproductive system of frog showing structures and pathways during…
A: Oviposition is a widespread process in vertebrates apart from eutherian mammals, and it refers to…
Q: In the animal kingdom, only primates menstruate. Other mammalscome into season, or “heat,” during…
A: The oestrous cycle or estrous cycle is the set of recurring physiological changes that are induced…
Q: differentiate the frog and mammalian spermatogenesis. Spermatogenesis Frog Mammal
A: Spermatogenesis is the development of haploid sperm cells from germ cells in the testis'…
Q: In the female reproduction system The birth canal is also known as the?
A: Humans are sexually reproducing and viviparous organisms. The reproductive stages that happen in…
Q: oviposition for
A: Oviposition is the process of expelling eggs from the oviduct to the external environment.
Q: A) The correct order of chronological order of developmental events is a. 1.cleavage 2.…
A: Since you have asked two questions, we would be answering only the first. Post the second question…
Q: In animal gamely he did, a single primary spermatocyte generates blank sperm, while single primary…
A: The meiosis is the cell division process by which a diploid (2n) mother cell divides its nucleus…
Q: Describe how the reproductive structures of each organism are adapted towards the given…
A: The main reproductive structures are the ovaries, testes, and gametangia. Ovaries are found in…
Q: reproductive
A: Turtle- It is an reptile belongs to order Testudines. these are mainly characterized by a shell…
Q: Plants and animals are both capable of reproducing asexually. In which types of asexual reproduction…
A: The type of asexual reproduction common to both plants and animals is Parthenogenesis . It occurs…
Q: Explain gastrulation in fish
A: Gastrulation in Fish: - Gastrulation is defined as a process in which gastrula is formed from a…
Q: Explain the functions of the parts observed in the image that relatw to the male reprudctive system.…
A: Fetal pigs are unborn pigs that are generally used for dissection and are used to study mammalian…
Q: During the evolution of animals , bilateral summetry accompanied cephalization . suggest a reason…
A: Evolution is the process by which an organism inherits or adapts favourable characteristics that…
Q: Give the approximate length of the various parts of the oviduct of a female chicken including its…
A: The different parts of oviduct of a female chicken along with their length are: Infundibulum: 2…
Q: Both monotremes and marsupials lay eggs. have some embryonic development outside the uterus. are…
A: Introduction :- Mammals are divided into three types :- Monotremes , marsupials and mammals etc. The…
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: Place the number corresponding to the correct germ layer in the blank. ____ Mesoderm ____…
A: During gastrulation, the hollow sphere of balls called blastula develops into a gastrula.…
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: 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: Match the rodent ovulatory cycle phase with the correct hormone combination Proestrus x Peak…
A: The term menstrual cycle is associated with the occurrence of cyclic ovarian activities in mammals.…
Q: An early stage embryo consisting of mutiple layers is a blastula O True False
A: In mammals, a blastula is an initial phase of embryonic development.
Q: in mammals, the luteinizing hormone has what impact on gamete development? select all that apply.…
A: Luteinizing hormone is produced form the Anterior pituitary gland.It is produced from 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: In tabular form, Cite the differences of spermatogenesis on grasshopper and rat
A: Introduction: The animal kingdom is characterized by eukaryotic, multicellular animal forms.…
Q: fat body 1 2 -7 .8 4
A: In frogs, the urine and reproductive systems are tightly linked and are referred to as the…
Q: Label the parts of the Amphibian Spermatogenesis and Oogenesis.
A: Oogenesis is the process of formation of ovum from germ cells in female ovaries.
Q: Diagram of: The path traveled by sperm and egg in both humans and sharks
A: The answer is given below
Q: Draw the chromosomes in the zygote (cell after fertilization) egg cell fertilization sperm cell of
A: The fusion of feale gamete (egg cell) and male gamete (sperm) is termed as fertilization.
Q: The nucleus of the spermatozoan is found in the centriole axial filament tail head plasma membrane
A: Spermatozoa are also called sperms which are male gametes that carry male's genetic material. These…
Q: IDENTIFY: A specialized receptive structure that guides the male gamete for fertilization in the…
A: Sexual reproduction in genus Polysiphonia takes place by fusion of non-motile male gamete with…
True or false male sea urchins release sperm at the optimal concentration for fertilization
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- _____ production is continuous from puberty onward in males; _____ production is cyclic and intermittent in females. a. Egg; sperm b. Sperm; egg c. Testosterone; sperm d. Estrogen; eggFigure 18.17 Which of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estrogen and progesterone are produced in the ovaries. b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. c. Both progesterone and estrogen are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estrogen but stimulated by high levels of estrogen.Besides producing gametes (sperm and eggs), the primary male and female reproductive organs also produce sex hormones. The _____ and the pituitary gland control secretion of both.
- Compare and contrast the Spermatogenesis and structure of the testes of: Rat (Vertebrates) Starfish (Invertebrates) Grasshopper (Insects) Frogs (Amphibians)Trace the flow of sperm from formation to eventual release from a male cat. Use number 1 as the point of originGive the approximate length of the various parts of the oviduct of a femalechicken including its functions and the time intervals involved in eggformation.
