Which of the following is an example of primary succession?

Question

BlackTom AI · Accepted Answer

Question: Which of the following is an example of primary succession?

Option 1: plant communities are established in a lifeless environment, usually devoid of soil.
This is the classic definition of primary succession. It describes colonization of new substrates where no soil or life previously exists, such as bare rock or newly formed land, followed by initial soil formation and establishment of pioneering organisms.

Option 2: a plant community becoming simplified with fewer species and less biomass.
This describes a decline in diversity and biomass, which is more characteristic of a disturbance event leading to secondary succession or degradation, not the initial colonization of a lifeless area. It implies prior soil and existing community, which contradicts primary succession.

Option 3: an ecosystem diversifying, supporting more species and increases in biomass.
While succession overall involves increasing diversity and biomass over time, this statement is too general and could apply to many stages, including secondary succession. It does not specify the absence of soil or prior organisms needed to illustrate primary succession.

Option 4: a succession of larger plants (trees, shrubs, etc.) following the establishment of pioneer species.
This describes later stages of succession where pioneer species pave the way for larger plants. It reflects secondary or later stages rather than the very beginning characteristic of primary succession.

In summary, Option 1 uniquely captures the essence of primary succession by describing establishment in a lifeless substrate with little to no soil, which sets the stage for subsequent soil formation and biotic colonization.

Which of the following is an example of primary succession?单项选择题

类似问题

The type of succession that occurs after a volcanic eruption lays down new rock is:

Question at position 8 An excess of growth hormone (GH) before puberty can result in the development ofgigantism.Graves' disease.acromegaly.pituitary dwarfism.Clear my selection

Question at position 6 The most abundant supporting cells in the central nervous system are called Question Blank 1 of 1[input].

Question at position 5 In the eye, the lens functions tofocus light on the retina at the back of the eye.protect the surface of the eye.increase vision in low-light conditions.move the eye side to side.Clear my selection

Question at position 4 Olfactory (odor) receptors are chemoreceptors. TrueFalse

If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.00, which of the following is TRUE?

Identify the missing particle in the following nuclear equation: 92 236 𝑈 → 38 90 𝑆 𝑟 + ? + 2 0 1 𝑛 + 4 0 0 𝑔

Which type of radioactivity will affect the mass of the isotope the least?

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