Scientists have used a combination of molecular clock data and fossils to suggest that multicellularity has arisen multiple times in eukaryotic lineages. Based on the information in the figure below, multicellularity has arisen in which list of lineages?

Question

BlackTom AI · Accepted Answer

To approach this question, I’ll compare each option against the evidence that multicellularity arose multiple times in eukaryotes as suggested by molecular clock data and fossils in the figure.
Option 1: 'Land plants, fungi, lobose amoebas' — This choice includes land plants, which are clearly multicellular, but lobose amoebas are typically unicellular organisms, not multicellular, and fungi are generally multicellular as well; however, the diagram’s multicellular lineages cluster differently, and lobose amoebas are not shown as multicellular lineages in the figure. Therefore this option mixes a true multicellular lineage with a predominantly unicellular group, making it inconsistent with the pattern shown.
Option 2: 'Land plants, metazoans, plasmodial slime molds' — Land plants and metazoans (animals) are well-established multicellular lineages. Plasmodial slime molds (also called myxomycetes) form plasmodia, a large multinucleate cell, representing a multicellular-like organization that arises independently of plants and animals. The figure and molecular clock data indicate these three lines arose multicellularity separately, reflecting multiple origins across eukaryotes.
Option 3: 'Ciliates, dinoflagellates, fungi' — Ciliates and dinoflagellates are protists that generally exist as unicellular entities, with complex life cycles but not multicellular tissues; fungi do form multicellular networks, but the combination here implies a set that does not align with the distinct, independently arisen multicellular groups highlighted in the figure. Thus this option doesn’t fit the pattern of repeated independent origins as depicted.
Option 4: 'Fungi, red algae, diatoms' — Fungi are multicellular, red algae can be multicellular, and diatoms are typically unicellular or colonial; this mix again does not reflect the independently originated multicellularity clusters shown in the diagram. The presence of predominantly unicellular diatoms makes this grouping unlikely to represent multiple independent origins as the question intends.
In summary, each incorrect option either pairs a predominantly unicellular lineage with a multicellular one without supporting the idea of multiple independent origins, or assigns lineages whose positions in the figure do not match the pattern of several separate unicellular-to-multicellular transitions. The combination that best reflects independently evolved multicellularity across distinct eukaryotic lineages, as illustrated by the figure and supported by molecular clock data, is the trio of land plants, metazoans, and plasmodial slime molds.

Scientists have used a combination of molecular clock data and fossils to suggest that multicellularity has arisen multiple times in eukaryotic lineages. Based on the information in the figure below, multicellularity has arisen in which list of lineages?单项选择题

类似问题

CHOOSE THE BEST ANSWER Multicellularity evolved multiple times independently in Eukaryotes, including in animals, plants, and fungi. Which of the following is NOT necessary for the evolution of multicellular organisms from single-celled organisms?

For two animals to be considered of the same species, which of the following MUST be true?

According to lecture and the reading, “Ecological Impacts of Climate Change,” in addition to a shift in species’ range, changes in species’ ______ also have been observed.

Which is NOT a type of natural disturbance event that might result in succession of new communities?

True or false? In both primary and secondary ecosystem succession, annual species are some of the earliest colonizers (before perennial species) because they spread their seeds efficiently into bare and disturbed environments.

Which of the following is true regarding biomes, species and climate change?

Plants that are well adapted to Colorado's dry/semi-arid environment can be used as attractive, but low-water-use landscaping. This type of landscaping (pioneered in Denver and trademarked by Denver Water) is known as _________________.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单