Invasive species are species that humans introduce around the planet that were not in those locations previously. Invasive species:

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Question restatement: Invasive species are species that humans introduce around the planet that were not in those locations previously. Invasive species:

Option 1: 'Out-compete natives for resources or directly destroy other species leading to their local extinction.' This statement captures a core ecological impact of many invasive species: they can be superior competitors for resources such as food, space, or mates, and in some cases directly cause declines or extinctions of native species through predation, disease, or aggressive interactions. This aligns with established observations in invasion biology.

Option 2: 'Lead to reduction of genetic variation of native species, but helps those native species adapt to changes in the environment.' While invasive species can influence native populations, the claim that they reduce genetic variation in natives while helping them adapt to environmental change is misleading. Invasives often threaten natives through displacement or decline, which can reduce genetic diversity through population bottlenecks, not increase it; and the notion that invasives help native adaptation is not a typical or reliable outcome.

Option 3: 'Encourage native species and and typically display character displacement so as not to out-compete native species.' Invasives do not generally encourage native species or promote character displacement to avoid competition; character displacement is typically discussed as a process among closely related resident species that diverge traits due to competition. Invasives frequently increase competition and threaten natives, not foster their coexistence via character displacement.

Option 4: 'Encourage native species and and typically partition resources so as not to out-compete native species.' This option also misrepresents the common dynamics. Invasive species are not typically described as encouraging native species or partitioning resources to prevent competition; they often disrupt existing resource partitioning and amplify competitive pressures on natives, leading to declines.

Overall assessment: The statements about invasive species that best reflect their typical ecological impact are those describing competition with natives and potential direct harm to native species, which is captured in Option 1. The remaining options describe scenarios—genetic benefits to natives, positive encouragement of natives, and guaranteed resource partitioning—that are not consistent with the usual consequences of invasives in many ecosystems.

Biol 1106 Rosenzweig Sp2025 CRN's11552 & 11553 Final Exam Lessons 1-24 - Requires Respondus LockDown Browser

Invasive species are species that humans introduce around the planet that were not in those locations previously. Invasive species:

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Biol 1106 Rosenzweig Sp2025 CRN's11552 & 11553 Final Exam Lessons 1-24 - Requires Respondus LockDown Browser

Invasive species are species that humans introduce around the planet that were not in those locations previously. Invasive species:

查看解析

登录即可查看完整答案

类似问题

37. The Cat is a threat to native species globally because they

When an introduced species spreads naturally and impacts native species it is called an species.

Invasive species have various characteristics that promote their success. Specifically, they are likely to rapidly, have no natural in their new habitat, and can tolerate variation in their habitat condition.

Question at position 17 Invasive species can cause ecological imbalance by out-competing and dominating native populations or organisms.TrueFalse

The lawns of the United States in the twentieth century were increasingly planted with ____________, a non-native grass that was resource intensive.

Match each of the invertebrates with their current status in New Zealand. (5 marks) 1: Gypsy moth ____ 2: Painted apple moth ____ 3: Southern salt marsh mosquito ____ 4: Great white butterfly ____ 5: Glassy-winged sharp shooter ____

The introduction of the Burmese python by pet owners in Florida has resulted in ________.

更多留学生实用工具

希望你的学习变得更简单

Match each of the invertebrates with their current status in New Zealand. (5 marks) 1: Gypsy moth 2: Painted apple moth 3: Southern salt marsh mosquito 4: Great white butterfly 5: Glassy-winged sharp shooter