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Practice AP EAMCET Plant Ecology in the app →What does ecological succession describe?Succession that begins on newly exposed bare rock is calledSuccession after a forest fire that leaves soil and seeds intact isWhich ecologist first documented succession in the Indiana Dunes?In Clements' stages of succession, the first stage, a bare area, is calledThe arrival of seeds, spores and other propagules at a bare site is termedEstablishment and initial growth of vegetation at a new site is calledIn the reaction stage of succession, which change mainly occurs?The final stage of Clements' sequence, forming a stable community, isAn intermediate stage on the way to a climax community is called aThe stable, self-perpetuating final community of a sere is theA climax community is often described as an index of the area'sWhich feature describes a climax ecosystem?A climax controlled mainly by regional climate is called aOvergrazing turns grassland into a bushy desert community. This stable stage is aWhich theory recognises only one climax, controlled by climate?Who proposed the polyclimax theory, in 1935?The climax pattern theory of 1953 is credited toWhich statement fits primary succession?Which organisms are typical early pioneers in primary succession?Early stages of secondary succession are relatively rapid mainly because ofSuccession driven by changes the plants themselves make to soil isSuccession caused by external influences such as erosion or silt deposition isWhich resource is the most important one plants compete for overall?Many plant communities are organised in hierarchies based on competition forThe plant-fungus mutualism that aids phosphate uptake is calledIn a mycorrhizal association, what does the fungus receive from the plant?Epiphytes growing on tropical tree branches are examples ofIn commensalism, the host species isParasitic plants attach to host xylem or phloem throughRegional climate, mainly temperature and rainfall, determines aProbability of local extinction of a plant species falls as itsPlant abundance can be measured as density, biomass orPlants adapted to survive in water-limiting conditions are calledWater storage in swollen plant parts is known asIn cacti, leaves are typically reduced toCompared with other plants, xerophytes usually have a lowerA plant surface covered with tiny hairs is described asDrought-escaping annuals that finish their life cycle after rain areNon-succulent perennials that endure long drought are calledUnrelated cacti and euphorbias look alike because ofA swollen trunk or root at ground level that stores water is aAquatic plants are also referred to asThe most common aquatic adaptation is lightweight packing cells calledIn floating-leaved aquatic angiosperms, stomata are foundWhy do floating aquatic leaves keep stomata permanently open?Water lilies are typical examples of which macrophyte group?Lemna and Pistia (water lettuce) are examples of which macrophyte type?Reed, papyrus and Typha are examples of which growth form?Aquatic plants large enough to see with the naked eye areSeaweed holdfasts differ from plant roots because they