Concept explainers
Introduction: The two different modes of reproduction are sexual reproduction and asexual reproduction. The asexual reproduction involves the production of offspring with genes inherited from a single parent. The offspring is genotypically similar to the parent organism. The sexual reproduction involves the fusion of two haploid gametes to form a diploid zygote. Both the haploid gametes are from two different parents and the offspring is not an exact copy of a single parent.
Answer to Problem 1TY
Correct answer: The development of offspring from the unfertilized eggs is called parthenogenesis. Hence, the correct answer is option d.
Explanation of Solution
Reason for correct answer:
Parthenogenesis is the property of lower plants and invertebrates, such as insects, some spiders and amphibians. Even some birds reproduce by this method. In this type of reproduction, the egg produced is diploid and develops into a complete organism. This is also a type of asexual reproduction.
Option d. is given as “parthenogenesis”.
Parthenogenesis is the development of offspring from the unfertilized eggs. Hence, the correct answer is option d.
Reason for incorrect answer:
Option a. is given as “budding”.
Budding is a type of asexual reproduction, but this process does not involve the formation of an ovum. Instead, the new organism emerges out of the previously existing organism. Hence, option a. is incorrect.
Option b. is given as, “cloning”.
Cloning refer to the process of generation of genetically identical biological entity or cell. Hence, option b. is incorrect.
Option c. is given as “fragmentation”.
In this type of reproduction, the organism breaks into smaller fragments and each fragment is capable of developing into a complete individual. Hence, option c. is incorrect.
Option e. is given as, “implantation”.
Implantation is a type of sexual reproduction in which the egg is fertilized by sperm and the fertilized egg gets implanted in the wall of the uterus. Hence, option e. is incorrect.
Hence, the options a., b., c., and e. are incorrect.
The type of asexual reproduction in which the development of offspring takes place from unfertilized eggs is called parthenogenesis.
Want to see more full solutions like this?
Chapter 51 Solutions
Biolody 4th Edition (Broward College Central 2017 Ed) BSC 2010
- Genetically unique individuals are produced through ________. a. sexual reproduction b. parthenogenesis c. budding d. fragmentationarrow_forwardIs this true or false? a. Fertilization is followed by a cleavage, a period of rapid cell division without growth. b. From the process above, this results in the production of a large number of cells called blastomeres. c. In sexual reproduction, the offspring have the same combinations of genes as their parents. d. Sequential hermaphroditism occurs when an animal is one sex during one phase of its lifecycle and the opposite sex during another phasearrow_forwardThe process forming the neural tube and plate via the intercalation of cells along the medial-lateral axis and extension along the anterior-posterior axis occurs is called? a. neurulation b. embryogenesis c. convergent extension d. morphogenesisarrow_forward
- Why is a second polar body expelled after fertilisation? a) To remove excess cytoplasm b) Because the oocyte must reactivate the incomplete meiosis before fusing with the sperm c) Before fusion with the sperm it must complete mitosis d) The fertilised oocyte is not a haploid cell until it expels the sperms mitochondriaarrow_forwardInternal and external fertilization differ in that species thata. produce an amniotic egg have internal fertilization.b. without an amniotic egg have external fertilization.c. produce live young have mammary glands.d. lay eggs are external fertilizersarrow_forwardWhich of the following characterizesparthenogenesis?(A) An individual may change its sex during itslifetime.(B) Specialized groups of cells grow into newindividuals.(C) An organism is first a male and then a female.(D) An egg develops without being fertilized.arrow_forward
- The process by which the structure labeled B is released from the structure labeled A is known as? A. differentiation B. ovulation C. gastrulation D. germinationarrow_forwardRegarding oogenesis, diplotene stage begins at a.birth b.Meiosis II c.7th month of fetal development. d.pubertyarrow_forwardThe main function of the acrosome reaction is to (a) activate the egg (b) improve sperm motility (c) prevent interspecific fertilization (d) facilitate penetration of the egg coverings by the sperm (e) cause fusion of the sperm and egg pronucleiarrow_forward
- Into which structures do the trophoblast cells of the developing embryo, differentiate? a) The developing foetus b) The yolk sac c) The placenta d) The blood vessels e) All of the abovearrow_forwardWhich of the following statements is incorrect? a) Sperm occur as X- or Y-chromosome bearing gametes b) The sex of an individual can not be determined from morphology early in embryonic development c) It is the ovum which determines the sex of the newly developing embryo d) X-chromosome bearing sperm are slightly larger than Y-chromosome bearing spermarrow_forwardIn humans, the development of fertilised egg takes place in the: (a) ovary (b) testis (c) oviduct (d) uterusarrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning