All of the following are requirements for successful external fertilization except for one. Which one is not a requirement? A moist environment. Large, energy-rich gametes. Synchronization of gamete release. Lock and key recognition between gametes of the same species.
Q: How does the sexual life cycle increase the genetic variation in a species? By allowing…
A: The somatic cells of the body are divided by the Mitosis whereas the germ cells like egg and sperm…
Q: A zygote is made from the fusion of haploid gametes (egg and sperm) True False
A: Sex cells produce two different types of gametes, a male gamete, and a female gamete. The fusion of…
Q: Which of the following is not an important component of the slow block to polyspermy Group of…
A: By reweaving the question, we have to find out which of the following is not an important component…
Q: Parthenogenesis only occurs in Animals with separate sexes that produce egg and sperm, but how is it…
A: Parthenogenesis is the production of offspring without a result of fertilization event.
Q: A zygote is made from the fusion of haploid gametes (egg and sperm) O True O False
A: Developmental biology is the branch of biology that deals with the development of embryo.
Q: Which of the following does not contribute to genetic variation in sexually reproducing species? Oa.…
A: Reproduction is passing on genetic material from one generation to another. Reproduction is…
Q: The change of successful fertilization is approximately 18% in every cycle. Why does this statistic…
A: c. Vagina is very acidic, killing many sperms. this statement seems to be false.
Q: Sexual reproduction results in offspring that are genetically different from one another and from…
A: Organisms reproduce to form new generations through sexual or asexual reproduction mechanisms.…
Q: Outline the processes of male gamete formation and female gamete formation in plants.
A: Plants are mainly multicellular plants that have ability to perform photosynthesis and belong to…
Q: Outline the enzymes that play important role in fertilization. Include their functions.
A: Fertilization is the event in sexual reproduction that marks the fusion of the male gamete which in…
Q: Describe the process of double fertilization.
A: Plants that will reproduce sexually also consist of gametes. When they became mature, the haploid…
Q: True or False. A haploid egg may develop without fertilization.
A: Diploid organisms have two copies of every chromosome (2n) in each cell. Whereas haploid organisms…
Q: Offspring that result from sexual reproduction are genetically different from their parents and fro…
A: Sexual reproduction" is a sort of reproduction which mainly comprises a complicated life cycle in…
Q: List and explain the steps involved in fertilization
A: The fertilization has the following steps are as follows:1. Sperm Capacitation2. Sperm-Zona…
Q: Why is it important for a gamete to be haploid? to prevent chromosome number from doubling…
A: The correct answer is option (a) prevention of doubling of chromosome number after fertilization.…
Q: 1. Zygote 2. Morula 3. Oocyte 4. Fertilization 5. Clevage 6. Blastocyte The order in which…
A: The stages are as follows : Oocyte Fertilization zygote cleavage Morula Blastocye
Q: meiosis and fertilization are important for the survival of many species because these two processes…
A: Introduction Almost all cells in our body divide to form new cells. However, there are some…
Q: Write 2 paragraphs on the purpose of fertilization in reproduction. Requirement: Minimum of 500…
A: Sexual reproduction: - Informal fertilization: - Informal fertilization occurs in organisms that…
Q: Sexual reproduction and meiosis go hand-in-hand. Meiosis is the process responsible for gamete (sex…
A: Cell cycle are the series of events that produce daughter cells from parent cell.
Q: Some plants, like corn, produce two types on flowers in the same individual: one type of has male…
A: Main function of flower is reproduction of species.All flowering plants are heterosporous which…
Q: Why do you think the zygote is dormant for sometime in a fertilised ovule?
A: In angiosperm, pollination is the process in which pollens are transferred from the stamen to the…
Q: An egg cell and a sperm cell will unite and undergo fertilization to form a diploid zygote. Right…
A: Answer : Option ' C ' is correct : Haplontic Life cycle
Q: "Two identical gametes will unite and undergo fertilization to form a diploid zygote. Right after…
A: The fertilization is defined as the fusion of gametes. The zygote is produced by the fertilization.
Q: Explain the three mechanisms that contribute to genetic variations in sexual life cycle.
A: It refers to the diversity in frequency of gene. It can refer to differences between individuals or…
Q: Which of these is an example of asexual reproduction? A hermaphrodite mating with another…
A: Reproduction is the biological process of self perpetuation race in which new organisms are produced…
Q: Polar bodies are generated during 1. Mitosis in females 2. Meiosis in males 3. Meiosis females 4.…
A: Answer : Option "1" is correct Mitosis in females
Q: Among the following patterns, which is likely to represent the phenomenon of senescence? Please note…
A: None of the above.
Q: What is NOT true about these statements on sexual reproduction? * 1 point Sexual reproduction…
A: Introduction: Sexual reproduction concerns the formation of male and female gametes either by the…
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: Compare and contrast the mechanisms of polyspermy block in internal versus external fertilization.
A: When an egg is fertilized by more than one sperm it is called as polyspermy. Generally in diploid…
Q: Some species, like bees, are haplodiploid: females are diploid and produced from fertilized eggs,…
A: Hymenopteran (ants, bees, wasps) social insect colonies are characterized with the aid of a variety…
Q: Meiosis in animals is responsible for the formation of what type of cells? (select all the apply)…
A: Answer is option a.) gametes.
Q: Explain step by step in your own words what are the events that follow fertilization
A: Introduction An organism reproduces an offspring that is biologically identical to the organism…
Q: As Cleavage stage of embryo genesis proceeds, the developmental potential of the cells becomes…
A:
Q: Compare and contrast external versus internal fertilization. Describe at least three major…
A: External fertilization External fertilization is a mode of reproduction in which a male organism's…
Q: The following characteristics are true of the male gamete sperm except: A. lifespan: 72 hours B.…
A: The reproductive cells of an organism are known as gametes. They can also be referred to as sex…
Q: an egg cell were treated with EDTA, a chemical that binds to calcium ions: The acrosomal reaction…
A: Physiologically, the acrosomal reaction requires presence of calcium ions for the reaction to…
Q: Which of the following meiosis does not occur? seminiferous tubules Graafian follicle onion root tip…
A: Answer:- Option C is the correct choice. Onion root tip. The Onion root tip cells only undergo…
Q: Describe how a female primordial germ cell can produce multiple gametes.
A: The female reproductive system includes ovaries, uterine tubes or oviduct, uterus, vagina, vulva and…
Q: What are the significance of FERTILIZATION. State whether it is a normal developmental phenomena or…
A: Reproduction involves all the process that lead to propagation of progeny. It is essential to keep…
Q: What is the chromosomal number of the following: (haploid, diploid, triploid, tetraploid) 1. Kidney…
A: 1. Kidney cell - Diploid. 2.Skin cell - Diploid. 3. Sertoli cell - Diploid. 4. Ootid - Haploid. 5.…
Q: There are 6 major events in fertilization. Discuss the process of fertilization or conception, with…
A:
Q: In fertilization, select answer a male gamete and a female gamete two female gametes two male…
A:
Q: Nondisjunction that produces a TRISOMY at fertilization can occur: Select an answer and submit. For…
A: Nondisjunction can cause many diseases, one of the most famous examples is down syndrome.
Q: in the Sexual reproduction and to explain why meiosis contributes to one of its great strength.With…
A: The biological process of reproduction is how new, distinct creatures are created from their…
Q: What process is occuring indicated by the letter A Name the strcuture indicated by the letter B Name…
A: The given diagram shows the life cycle of the angiosperms. Angiosperms are the flowering plants in…
Q: Label the parts of the ovule in the free-nuclear- and mature stage. Indicate the ploidy of the…
A: Labeling of the parts of the ovule in the free-nuclear- and mature stage is done below:
Q: Given the table below, give the difference between the genetic composition of offspring in asexual…
A: There are mainly two types of reproduction: Sexual: fusion of gametes. Asexual: mitosis
Q: Diagram of Ovary, x-section in the bougainvillea
A: Bougainvillea is the genus from the bushes that are mainly used as ornamental plants
Q: Which is NOT a source of genetic variation in sexually reproducing organisms? Independent assortment…
A: Sexually reproducing organisms are the organisms that produce sex cells or gametes. The fusion of…
Step by step
Solved in 2 steps
- In fertilization, select answer a male gamete and a female gamete two female gametes two male gametes fuse to produce a select answer zygote female germ cell male germ cellThe route followed by a sperm from production to fertilization in a flowering plant is: -A sperm cell, enclosed in a pollen grain with another sperm, is produced in the filamentIt is transported to a stigma where it passes through a pollen tube that grows down the style to the ovaryThe pollen grain enters the ovule and joins with the egg cell. -A sperm cell is produced in the antherIt is transported to a stigma where it becomes enclosed along with another sperm cell into a pollen grainThe pollen grain grows down the style to the ovaryIt enters the ovule and joins with the egg cell. -A pollen grain is produced in the pistil, which explosively ejects it into the airThe pollen grain is transported to a stigma where it forms two sperm cells.One of the sperm cells passes through a pollen tube that grows down the style to the ovaryThe sperm enters the ovule and joins with the egg cell. -A pollen grain is produced in the antherIt is transported to a stigma where it produces two sperm…Which of the following does not contribute to genetic variation in sexual life cycles? independent assortment random fertilization crossing over alternation of generations
- Which of the following is not an important component of the slow block to polyspermy Group of answer choices A. depolarization of the cell B. a physical space between the cell membrane and the fertilization envelope C. hardening of the vitelline layer and jelly coat to form the fertilization envelopeFill in the blank: The cell resulting from fertilization is called a(an) ___________________.What is double fertilization? Include the fate of the resulting zygote and triploid nucleus in your answer.
- The following characteristics are true of the male gamete sperm except:A. lifespan: 72 hours B. with 23 chromosomes, 22 autosomes and a Y sex chromosome C. produced by the testes D. has 2 types: androsperm carries the Y-sex chromosome and the gynosperm which carries the X-sex chromosome Provide explanation.Because of the ________ alignment of homologous chromosomes during meiosis, gametes can end up with _________ mixes of maternal and paternal chromosomes. a. unvarying; different b. unvarying; duplicate c. random; duplicate d. random; differentWhy do you think the zygote is dormant for sometime in a fertilised ovule?
- Which one of the following entries most accurately describes the stage at which oogenesis is reinitiated? Oogenesis is reinitiated at prophase of mitosis Oogenesis is reinitiated at prophase I of meiosis Oogenesis is reinitiated at prophase II of meiosis Oogenesis is not reinitiated.Which of the following is not true about neurulation? Choose all possible answers. a. Segregation of neural ectodermal rudiment from the epidermal ectoderm. b. In primary neurulation, the neural plate thickens along its midline into a solid cord of cells that is displaced internally and cavitates to form a hollow tube. c. In secondary neurulation, the neural plate folds along the anterior-posterior axis of the embryo, forming a tube that detaches from, and is displaced under, the epidermal ectoderm. d. Ectoderm forms the neural tube e. Mesoderm forms the reproductive organs f. Endoderm forms the gut g. All are true about neurulationFishes and some species of amphibians like frogs fertilize their eggs outside of their body. Which of the following statements is TRUE about external fertilization? * A small number of gametes need to be produced by the male and female to ensure reproductive success It produces a small number of offspring compared to internal fertilization A body of water is not required no answer Chances of fertilization are diminished by environmental hazards and Predators