During asexual reproduction, the zygote develops into an embryo which turns to be an identical copy of the parent. Select one: a. True O b. False
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- 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…Draw diagrams to represent a cross of a mutant ovule/egg and a normal pollen/sperm. Also include a diagram of the zygote. Will the offsprings have the mutation? Explain 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.Draw a labelled diagram of a section through ovary.The number of chromosomes present in eurkaryotic cells a. is consistent during the life cycle b. is haploid among sexually reproducing forms and diploid if the reproduce sexually c. is double by fertilization and cut in half by meiosis d. is dependent on the age of the tissue
- Using the diagram as a reference, arrange the items in the sequence in which they occur. Male and female pronuclei form Secondary oocyte present in oviduct Oocyte activation Meiosis finishes Amphimoxis Acrosomal enzymes disrupt the corona radiata Reset HelpIdentify each of these statements as ones that describe asexual reproduction (A),sexual reproduction (S), or could describe both (B) forms of reproduction. Writeyour answer on the space provided before each number.B= BothA= Asexual ReproductionS= Sexual Reproduction1. organism does not need a mate to reproduce2. takes some time to create offspring-3. the offspring are not the exact copy of their parent/s4. it is a quick process5. does not need to develop special cells for reproduction6. environmental changes affect all individuals-7. may only be able to reproduce with a limited number or may notreproduce at all_8. offspring are reproduced9. characteristics are passed down to the next generation10. many new organisms are created in a short period of time11. dogs and cats reproduce this way12. amoeba, yeast and bacteria reproduce this way.13. plants reproduce this way14. production of gametes is necessary15. its purpose is the survival and continuity of speciesTrue or false, does fertilization occurs in the structure labeled B in the picture?
- During polyembryony, if one embryo is formed from synergids and the other from nucellus, state the one that is haploid and the one that is diploid.Describe an example of each of the following: a pre-zygotic barrier to reproduction a post-zygotic barrier to reproductionWhich type of life cycle has both a haploid and diploid multicellular stage? a. an asexual life cycle b. diploid-dominant c. haploid-dominant d. alternation of generations
