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- List any two examples of xerarch succession.According to the morphological species concept, would you classify benthics and limnetics as A) a single species B) separate species C) the species status is not clear according to this species concept. Explain in 2-3 sentences. (I think the answer is separate species, not sure how to explain this...)Describe two hypotheses that explain why species diversity is greater in tropical regions than in temperate andpolar regions
- Using the phylogenic tree below, answer the following questions: 1 -Species A -Species B -Species C -Species D -Species E -Species F Which species will shares only one characteristic with the others? Which numbered location identifies characteristics shared by Species E and F? Which species will share characteristics similar to those at location 3? Which numbered location indicates a common ancestor of all the species on the tree?Which species are most broadly distributed, which have the smallest range?Distinguish between the rate of speciation in a higher taxon and its rate of diversification. What are the possible relationships between the present number of species in a taxon,its rate of speciation, and its rate of diversification?
- Are the phyletic gradualism and punctuated equilibrium models mutually exclusive? Explain your answer.Distinguish between morphological, phylogenetic, and biological species concepts. What are the advantages and disadvantage of each? What notion is common to each of the species defintions that we considered? Why do species definitions matter in conservation biology?explain why it is difficult to accurately estimate how many species are on Earth?
- What do you call this part of a phylogenetic tree pointed by the arrow that indicates divergence or branching point from the ancestral population? ↑ 88 10 Branch length Node Bootstrap value Outgroup 66 100 85 94 Sardinella gibbosa - Sardinella lemuru -Sardinella longiceps - Sardinella fimbriata - Sardinella albella Sardinella tawilis Escualosa thoracata Engraulis encrasicolusplease explain A drawback of the time hypothesis to explain the variation in species richness is that 1. Cannot account for algal diversity. 2. Fossils do not preserve well in the oceans. 3. Geological activity may interfere with species richness measurements. 4. It is not applicable to marine ecosystems because there was no glaciation in oceans. 5. Humans significantly modified marine environments.What is the relationship between the concept of reproductive and geographical isolation and the concept of species? Illustrate and give concrete examples.