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Questions and Answers
Cells of ______ align into chains.
Cells of ______ align into chains.
sorogen
The uninucleate limax ______ has an obvious uroid.
The uninucleate limax ______ has an obvious uroid.
amoeba
Mature sorocarp arranged as a ______ chain of spores.
Mature sorocarp arranged as a ______ chain of spores.
uniseriate
Acrasis helenhemmesae is associated with a life ______.
Acrasis helenhemmesae is associated with a life ______.
Two round ______ are scaled to G.
Two round ______ are scaled to G.
Dictyostelia are common amoebae, mostly known from forest ______ and litter.
Dictyostelia are common amoebae, mostly known from forest ______ and litter.
Acrasis spp. belong to the class ______, which is part of the Phylum Amoebozoa.
Acrasis spp. belong to the class ______, which is part of the Phylum Amoebozoa.
Uniseriate sorocarps produce spores with prominent ______.
Uniseriate sorocarps produce spores with prominent ______.
In cellular slime molds, the category that contains Acrasids is called ______.
In cellular slime molds, the category that contains Acrasids is called ______.
The spore mass of A.rosea appears ______ 30 minutes after development.
The spore mass of A.rosea appears ______ 30 minutes after development.
The life cycle features a macroscopic, slimy, ______ phase.
The life cycle features a macroscopic, slimy, ______ phase.
These organisms are commonly found in soil, decaying wood, and other organic ______.
These organisms are commonly found in soil, decaying wood, and other organic ______.
This requires two genetically compatible sexual ______ controlled by a one-locus, multiple allelic mating system.
This requires two genetically compatible sexual ______ controlled by a one-locus, multiple allelic mating system.
Myxomycetes can be kept as 'pets' in laboratories, feeding on bacteria and small ______ particles.
Myxomycetes can be kept as 'pets' in laboratories, feeding on bacteria and small ______ particles.
These sexual systems are found in ______ polycephalum, Didymium iridis, and Physarum pusillum.
These sexual systems are found in ______ polycephalum, Didymium iridis, and Physarum pusillum.
Groups 1-3 retains the small, lateral ______ sorocarps from posterior of the ancestral survival strategy.
Groups 1-3 retains the small, lateral ______ sorocarps from posterior of the ancestral survival strategy.
This strategy is lost in Group ______, the most recently diverged group.
This strategy is lost in Group ______, the most recently diverged group.
The ancestral survival strategy of terminal sorogen encystment of individual ______.
The ancestral survival strategy of terminal sorogen encystment of individual ______.
Acropetal formation of whorls of ______.
Acropetal formation of whorls of ______.
Group 4 includes the model organism ______.
Group 4 includes the model organism ______.
The pathogens infect seedlings at the base, causing them to collapse due to enzymatic degradation of ______ walls.
The pathogens infect seedlings at the base, causing them to collapse due to enzymatic degradation of ______ walls.
Control methods for damping-off disease include soil sterilization, ______ application, and careful management of watering practices.
Control methods for damping-off disease include soil sterilization, ______ application, and careful management of watering practices.
Oomycota are commonly referred to as water molds and ______ rusts.
Oomycota are commonly referred to as water molds and ______ rusts.
Damping-off disease is primarily caused by ______ spp.
Damping-off disease is primarily caused by ______ spp.
Examples of downy mildew diseases include Plasmopara viticola and Peronospora ______.
Examples of downy mildew diseases include Plasmopara viticola and Peronospora ______.
The impact of plant pathogenic oomycota affects a wide variety of ______, especially during the early stages of growth.
The impact of plant pathogenic oomycota affects a wide variety of ______, especially during the early stages of growth.
Oomycota include plant pathogenic organisms such as Saprolegnia and ______ mildew.
Oomycota include plant pathogenic organisms such as Saprolegnia and ______ mildew.
The life cycles of animal pathogenic and ______ pathogenic oomycota exhibit different characteristics.
The life cycles of animal pathogenic and ______ pathogenic oomycota exhibit different characteristics.
Study Notes
Life Cycle of Acrasis helenhemmesae
- Mature sorocarp forms a uniseriate chain of spores.
- Development progress observed with changing structures in sorocarps within 30 minutes.
- Spores exhibit prominent hila for attachment and release during the reproductive cycle.
- Encystment occurs post-alignment of amoeboid cells, leading to spore formation.
Cellular Slime Molds (Phylum Amoebozoa)
- Dictyostelia primarily inhabit forest soil and litter.
- Sorocarps structure varies: some groups retain ancestral encystment strategies, while the most recent diverged group lacks this.
- A notable model organism, Dictyostelium discoideum, showcases amoeboflagellate fusion resulting in a diploid plasmodium.
- Dictyostelia possess diverse sexual reproductive systems based on mating-type compatibility.
Oomycota: Plant Pathogens
- Saprolegnia identified as a significant pathogen affecting aquatic and plant life.
- Damping-off disease, caused by Pythium spp., leads to seedling collapse due to enzyme-induced cell wall degradation.
- Control measures include soil sterilization, fungicide application, and managing irrigation practices to minimize pathogen spread.
- Downy mildew diseases like Plasmopara viticola and Peronospora tabacina have notable impacts on crops like grapes and tobacco, respectively.
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Description
Explore the fascinating life cycle of Acrasis helenhemmesae, including its reproductive strategies and the role of spores in its development. Additionally, learn about the impact of Oomycota on plant pathogens and the diseases they cause. This quiz delves into the complexities of cellular slime molds and their ecological significance.
