MARINE BIOLOGY
11th Edition
ISBN: 9781259880032
Author: CASTRO
Publisher: RENT MCG
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Chapter 1, Problem 3CT
Imagine you are a marine biologist and you notice that a certain type of crab tends to be larger in a local bay than in the waters outside the bay. What hypotheses might account for this difference? How would you go about testing these hypotheses?
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This is the place to interpret your results and state whether or not your data supported your hypotheses. For this particular lab, you should discuss the discrepancies (if any) between your data and suggest about reproductive isolation in these two groups of isopods and what actually happens in nature.
my hypotheses were: survivors will be faster than victims and survivors will be smaller than victims.
PLEASE DO NOT USE AI, I run it through a AI detector, and check for plagerism, the last time I used this is was through AI and I pay for this subscription... I could run it through AI myself
thank you so much for your help!
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…
Question 1. What is the most recent estimated time of divergence between invertebrates and vertebrates, based on the ATPase 6 gene? What is the most distant?
Question 2. Based on the most recent plausible age, which gene gives the most recent time for the divergence between invertebrates and vertebrates? According to that estimate, how long ago was this?
Question 3. Based on the most distant plausible age, which gene gives the most distant time for the divergence between invertebrates and vertebrates? According to that estimate, how long ago was this?
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- n which situation would it make sense to use the morphological species concept? When you are able to collect data about how individuals in your study use their habitat, but you are unable to determine if they interbreed When working with fossils from extinct organisms When you only have genetic data about each organism in your study When you are not able to collect data about how individuals in your study use their habitat, but you are able to collect reproductive dataarrow_forwardYou want to distinguish between two hypotheses to explain the patterns you see: 1) Males not feeding the young is an adaptation to dimorphism 2) If males don't feed the young in a species, it will allow them to become brightly colored To begin to address this question, map the characters changes in dimorphism and males feeding the young onto each of the trees on the previous page. CHARACTER SEXUAL DIMORPHISM MALES FEED YOUNG Cassin's Vireo No No Red Fox Sparrow Cape May Warbler Cedar Waxwing Golden-Crowned Kinglet Pyrrhuloxia Yes No No No No Yes No Yes Yes No California Gull No Yes Note: This data is fictional 5) Which of the hypotheses in part 4 is consistent with your analysis? Explain why in a brief paragraph.arrow_forwardOne possible explanation for the distribution of ostriches is vicariance True or false ?arrow_forward
- How do scientists derive testable hypotheses? Explain with an example?arrow_forwardplease helparrow_forwardScenario 1: You are running a marathon and observe that running increases your pulse rate. Using what you know about the scientific method complete the following: 1. Write a hypothesis:2. Independent variable:3. Dependent variable:4. Controlled variables (at least 3):a.b.c5. Control Treatment:6. Experimental Treatment: Scenario 2: Sarah kicked a fully inflated soccer ball 100 times and measured how far it traveled. Next, she kicked a partially inflated soccer ball 100 times and measured how far it traveled. 1. Write a hypothesis:2. Independent variable:3. Dependent variable:4. Controlled variables (at least 3):a.b.c5. Control Treatment:6. Experimental Treatment:arrow_forward
- What is the Malthusian Theory? Is the Malthusian Theory applicable today or not at all? Please explainarrow_forwardGive typing answer with explanation and conclusion Consider this claim: Changes in environmental conditions always result in new ecosystems and loss of biodiversity characterized by an increase in the number of some species, the evolution of new species, and the extinction of some species. Use what you have learned from the lesson, as well as reliable and reputable resources, to evaluate this claim. Use at least three examples from the lesson and other sources to support the valid ideas in the claim and refute the invalid?arrow_forwardWhich of the following observations best supports the conclusion that two animal species evolved from a common ancestor in recent geological history? A The species are both herbivores. B The species have similar bone structure. C The species live in the same environment. D The species both obtain oxygen from the air. Choosearrow_forward
- Based on figure 6 how does a light-colored exoskeleton makes beetles better adapted to the environment?arrow_forwardwhy is it important to name organisms? Prionance glauca is sometimes referred to as the blue whaler shark because the shark used to attack the carcasses of whales being towed by whaling ships. discuss the advantages and disadvantages of using common names like these. what are the advantages and disadvantages of using scientific names to describe species?arrow_forwardYou have the chance to use the very first time-machine created by humans. You volunteer to travel 520 million years back in time to collect coastal marine animals. The first organism you encounter is unusual looking and does not resemble any extant organism you know. You notice that the body is segmented, and the segments are not identical. You also notice that the organism has well developed eyes and one pair of long antennae. Their jointed appendages are branched but unequal in size and have various shapes. Moreover, the body appears to be rigid and covered dorsally with numerous spines. Try to classify this organism (e.g., its phylum) based on its appearance and describe its symmetry. Then speculate on its ecology, likely life history (reproduction), and key developmental features. The second organism that you encounter is fixed to the substrate, firm, and has fan shape with finger like projections. It is brightly colored. As you observe it, a few branches of the fan break off. You…arrow_forward
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