Question

pioneer species: grass or small plants
move to
primary succession
both
secondary succesion

Explanation:

In ecological succession, pioneer species like grass or small plants are characteristic of secondary succession (where there was previously life, e.g., after a fire or disturbance, soil is present and these species colonize). However, also, in some cases of primary succession (after bare rock, etc.), but more commonly, secondary succession uses these as pioneers. Wait, actually, secondary succession: when an ecosystem is disturbed but soil remains, pioneer species like grasses come. Primary succession starts on bare rock, with lichens first, then mosses, then grasses. Wait, no—maybe the correct answer is Secondary Succession? Wait, no, let's recall: Secondary succession occurs in areas where a disturbance (like fire, flood) has destroyed a community but left the soil intact. Pioneer species here are often grasses, small plants. Primary succession starts on lifeless areas (no soil, like bare rock), pioneer species are lichens, mosses. So the pioneer species "grass or small plants" are part of secondary succession? Wait, but maybe the option is "Secondary Succession" (note the typo in "Succesion" but it's secondary). Wait, or maybe "Both"? No, primary succession's pioneers are usually lichens/mosses. So the correct option is the yellow one: Secondary Succession (with typo).

Answer:

Secondary Succession (the yellow - colored option with the typo “Succesion” in the text)