Which of the following would be an appropriate hypothesis for an experiment in this lab? Sea urchins living in kelp forests have higher fertilization rates than those living on rocks in intertidal areas. Sea urchin species spawning near other echinoderm species have lower fertilization rates. Sea urchins fertilization rate drops as carbon dioxide concentrations rise. The concentration of phthalates in sea water reduces sea urchin fertilization rates. Sea urchins living in depths up to 10 meters have higher fertilization rates.

Which of the following would be an appropriate hypothesis for an experiment in this lab? Sea urchins living in kelp forests have higher fertilization rates than those living on rocks in intertidal areas. Sea urchin species spawning near other echinoderm species have lower fertilization rates. Sea urchins fertilization rate drops as carbon dioxide concentrations rise. The concentration of phthalates in sea water reduces sea urchin fertilization rates. Sea urchins living in depths up to 10 meters have higher fertilization rates.

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter24: Animal Evolution- The Invertebrates

Section: Chapter Questions

Problem 3DAA

See similar textbooks

Similar questions

Which of the following would be an appropriate hypothesis for an experiment? a.Sea urchins fertilization rate drops as carbon dioxide concentrations rise. b.Sea urchins living in kelp forests have higher fertilization rates than those living on rocks in intertidal areas. c.Sea urchin species spawning near other echinoderm species have lower fertilization rates. d.The concentration of phthalates in sea water reduces sea urchin fertilization rates. e.Sea urchins living in depths up to 10 meters have higher fertilization rates.
Which of the following most accurately describes the life history for organisms such as sea urchins, who release hundreds or even thousands of eggs to be fertilized in the open ocean? combination of r-selected and K-selected r-selected K-selected
A scientist for one of the Water Management Districts near Victoria conducts a study of the effects of industrial wastewater on marine clams (animals that are sessile as adults) by comparing the density and reproductive condition of clams collected within 100 m of a discharge pipe with those collected 10 km away. He found very low densities of clams near the pipe and those that were there had very small gonads. You have been hired by the company discharging wastewater via this pipe to explain why these data should not be used to shut you down. What scientific arguments are you going to make to the review board? Hint: don’t talk about study design issues….tell me about what other ecological factors might be at play here.
Is the following case study an r-strategist or a K-strategist? American toads practice explosive reproduction. During the first warm days in spring, both males and females migrate from forests and converge on ponds. Reproduction is quick, taking only a few days. Females lay hundreds of eggs in jelly-filled sacks along the sides of the pond or stream. As soon as the eggs are laid, males and females abruptly leave the pond. Offspring are left to develop, hatch, and grow on their own, maturing in about three months.
In spadefoot toads there are two forms of the tadpoles: omnivores and carnivores. Environmental factors such as population density, oxygen concentration, and availability of food determine which form any particular tadpole takes. Consider the situation below. A single pair of toads produces a fertilized group of eggs in a pond. The pond dries a bit creating two separate ponds, one is deep and the other is shallow. All the tadpoles in the deep pond become omnivores and all the tadpoles in the deep pond become carnivores. There is a heavy rain and the ponds become connected again and the two groups of tadpoles mix together. The carnivores eat most of the omnivores and more of the carnivores become adult toads This is an example of Group of answer choices A. natural selection and evolution B. evolution only C. natural selection only
Identify whether each of the statements is an Observation or a Hypothesis to explain an observation. 1) Golden toads laid their eggs in shallow pools of water between the roots of cloud forest trees. 2) Golden toad tadpoles lived in shallow pools of water on the cloud forest floor before developing into toadlets. 3) Over warm ocean water, clouds form higher in the atmosphere. 4) Golden toads had highly specialized reproductive habitat. 5) Golden toads were found only in the cloud forest of Monteverde, Costa Rica. 6) The fossil record and current trends show that highly specialized species with small populations and narrow ranges are highly susceptible to extinction. 7) Spring 1987 was the driest spring on record for Monteverde. 8) All the golden toad tadpoles might have died during the spring of 1987 because their pools dried up before the young could lead a fully terrestrial life. 9) The drier conditions at Monteverde in 1987 might have been caused by…
Conservation biologists have altered the evolution of salmon populations in captive-breeding programs. Wild female salmon tend to produce fewer large eggs because the large eggs contain more nutrients for the off spring, giving each individual a greater chance to survive. After just a few generations, however, captive-bred females now lay greater numbers of small eggs. Suggest a possible adaptive advantage for many small eggs in the captive-bred environment. What would you predict regarding the reproductive success of captive-bred females released in the wild?
Which of the following is NOT true about the salmon life cycle? Group of answer choices Salmon need cool, clean water in their fresh water habitat. Most salmon spend the majority of their life in the ocean When they spawn salmon prefer to lay their eggs in deep pools. Salmon return to spawn in the same stream where they were born.
Salt is notoriously dangerous to land snails; however, some populations of aquatic, freshwater snail have brackish (or a mix of salt and fresh water) water adaptations and live in different parts of a river system. Why is the brackish water adaptation necessary, and how can we determine whether the inherited adaptation is influenced by environmental factors.
Which reproductive strategy is correctly paired with its example or description? . r-strategist; high mortality rates r-strategist; elephants k-strategist; rabbits k-strategist; many offspring
Is the following case study an r-strategists or a K-strategists? Andean condors reach sexual maturity at five to six years. Reproduction is slow; females lay only one or two eggs every other year. Offspring are cared for by both parents for at least one year. Andean condors are long-lived and can survive for seventy to seventy-five years.
Shrimp fishing off the coast of Georgia was closed in 2001, due to a drastic reduction in the shrimp population. Landings of blue crab plummeted in 2002 and 2003, as five years of drought and greatly reduced freshwater flow from underground aquifers led to increased salinity in coastal estuaries. These habitats between open ocean and fresh water are the “nurseries’ for many marine animals. Using information you learned in this lab, speculate about possible causes for the decline in shrimp and blue crab populations.