To review:
The experimental design to determine the adverse effect of a new pesticide launched in the market on egg production and fertilization in frogs.
Introduction:
The chemical contamination of soil and water may acts as a major factor in amphibian population decline. The effects of organic and inorganic chemical contamination on amphibians like frogs may also depend on other biotic and abiotic variables at the time of exposure like UV-radiation. The pesticide endosulfan is an organochlorine cyclodiene which is extensively used in the world. The oxidation product, endosulphan sulphate is frequently transported into riverine environments. Frog embryos and larvae generally develop under the heterogeneous environments, and the concentration of different chemicals affects the various life cycle stages.
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Chapter 11 Solutions
Biology: The Dynamic Science (MindTap Course List)
- Which event leads to a diploid cell in a life cycle? a. meiosis b. fertilization c. alternation of generations d. mutationarrow_forwardWhich reproductive combination produces hybrids? a. when individuals of the same species in different geographical areas reproduce b. when any two individuals sharing the same habitat reproduce c. when members of closely related species reproduce d. when offspring of the same parents reproducearrow_forwardWhy is mating important in external fertilization of animals? A) It ensures survival of offspring B) It ensures sperm dilution C) For pleasure D) It ensures fertilizationarrow_forward
- make a concept map that shows how reproduction takes place in animals. (Include the modes, sexual and asexual; and fertilization)arrow_forwardWhich form of reproduction can result from damage to the original animal? a. asexual b. fragmentation c. budding d. parthenogenesisarrow_forwardThe diagram below represents some structures in the human female reproductive system. Use the diagram to answer the question that appears directly below it.arrow_forward
- Based on the text for roaches: Predict what factors in the environment can be altered to stop the pest from reproducing.arrow_forwardUsing at least three examples discuss the statement that "success of insects is due to the modification of similar parts for different functions ".arrow_forwardCompare the male and female reproductive organs of reptiles and birds. Explain how are their reproductive patterns advantageous for their survival?arrow_forward
- Which is an advantage of asexual reproduction compared to sexual reproduction? A. Mutations occur in most offspring. B. Offspring resemble the parents most of the time. C. Energy is not wasted in finding a mate. D. The population growth rate and diversity stays constantarrow_forwardDescribe the evidence that the development of honeybee queens is due to exposure to royal jelly.arrow_forwardControlling for body size, would you expect a flightlessbird to produce eggs that are larger than, smaller than,or the same size as eggs produced by a bird that flies?Explain your reasoning?arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College