- Genus.
- Diatom.
- Mycelium.
- Hypha.
- Sporangium.
- Zoospore.
- Conidium.
- Fungi.
What is resting spore and Heterocyst?
The resting spore and heterocyst:
A resting spore can be defined as the spore developed by the fungi that facilitates its survival in the unfavorable condition. … A heterocyst is the cynobacterial cell that is completely differentiated. This carries out the process of nitrogen fixation.
What is Anabaena resting spore?
Anabaena is a bacteria that comes under the kingdom of Monera which includes prokaryotic organisms. So Anabaena does not have a well-defined nucleus and does not have cell organelles. They have resting spores which are nitrogen-fixing bodies which have thick cell walls.
What are resting spores in nostoc called?
Resting spores– Akinete is a resting spore formed due to thickening of the wall of vegetative cell,to tide over unfavorable conditions.
Which pathogen produces Oospore as a resting structure?
The mycelium and resting spores (oospores) or sclerotia of several phytopathogenic soil oomycetes and fungi such as Pythium, Phytophthora, Rhizoctonia, Sclerotinia, and Sclerotium are invaded and parasitized (mycoparasitism) or are lysed (mycolysis) by several fungi, which as a rule are not pathogenic to plants.
What are thick walled resting spores?
Chlamydospores are the large thick-walled resting spores found in Rhizopus during asexual reproduction. Aplanospores are the non-motile spores due to absence of flagella.
What is Chlamydospores in fungi?
A chlamydospore is the thick-walled large resting spore of several kinds of fungi, including Ascomycota such as Candida, Basidiomycota such as Panus, and various Mortierellales species. It is the life-stage which survives in unfavourable conditions, such as dry or hot seasons.
What is an Akinetes in biology?
An akinete is an enveloped, thick-walled, non-motile, dormant cell formed by filamentous, heterocyst-forming cyanobacteria under the order Nostocales and Stigonematales. … They also accumulate and store various essential material, both of which allows the akinete to serve as a survival structure for up to many years.
What is Statospore?
statospore (stat’-o-spore). A resting spore, e.g. a siliceous thick-walled resistant cyst formed within the frustules of various chiefly marine centric diatoms, and characterized by two overlapping convex valves and by absence of a girdle; or an intracellular cyst in various algae of the division Chrysophyta.
How are Basidiospores produced?
Basidiospore is a reproductive spore produced by Basidiomycete fungi, a group that includes mushrooms, rust, and smuts. Basidiospores typically each contain one haploid nucleus that is the product of meiosis, and they are produced by specialized fungal cells called basidia.
Which of the following are thick walled resting spores produced directly from Hyphal cells?
Question : Thick walled asexual spores formed by Rhizopus, are. Chlamydospores.
Which is a dormant resting stage of bacteria seen in adverse environmental condition?
A microbial cyst is a resting or dormant stage of a microorganism, usually a bacterium or a protist or rarely an invertebrate animal, that helps the organism to survive in unfavorable environmental conditions.
What is Chara in botany?
Chara is a genus of charophyte green algae in the family Characeae. They are multicellular and superficially resemble land plants because of stem-like and leaf-like structures. … They are covered with calcium carbonate deposits and are commonly known as stoneworts.
Are Anabaena photosynthetic?
Anabaena circinalis is a species of Gram-negative, photosynthetic cyanobacteria common to freshwater environments throughout the world.
What is Nostoc and Anabaena?
Nostoc and Anabaena are two bacterial species. Both Nostoc and Anabaena are filamentous, and they possess unbranched trichomes. Both Nostoc and Anabaena are cyanobacteria or blue, green algae. Both Nostoc and Anabaena can fix atmospheric nitrogen. Both Nostoc and Anabaena can do photosynthesis.
What is difference between Zoospore and oospore?
Dear zygospore is formed in zygomycetes and it is thick walled zygote. Oospore is formed in oomycetes and it is a thin walled zygote.
What is the importance of oospore?
An oospore forms when an oogonium (female gamete) is fertilized by an antheridial (male gamete) nucleus; a characteristically thick wall and food reserves help to ensure survival.
What is the difference between Oosphere and oospore?
As nouns the difference between oospore and oosphere
is that oospore is (biology) a fertilized female zygote, having thick chitinous walls, that develops from a fertilized oosphere in some algae and fungi while oosphere is (botany) a large nonmotile egg cell formed in an oogonium and ready for fertilization.
What is the function of Auxospore?
Auxospores typically play a role in growth processes, sexual reproduction or dormancy. Auxospores are involved in re-establishing the normal size in diatoms are successive mitotic cell divisions leads to a decrease in cell size.
What type of asexual reproduction occurs in rhizopus?
In Rhizopus, asexual reproduction takes place by spores where sporangiospores are produced inside a spherical structure called sporangium. Sexual reproduction in Rhizopus takes place by fusion of multinucleate (gametangia).
Which of the following thick walls for protect the algae from Unfavourable condition?
Question | Which of the following thick walled spores protect the algae from unfavourable condition? |
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What is Chlamydospores and hyphae?
Chlamydospores are produced by many fungi and represent enlarged, thick-walled vegetative cells with varied forms and condensed cytoplasm that form within hyphae or at hyphal tips.
What is Sporangiospore?
Sporangiospores are spores that are produced in a sporangium (plural: sporangia). A sporangium in fungi (but not mosses and some other organisms) is simply a cell containing spores. … The important point is that a sporangium is a cell that encloses its spores until they are mature and ready for dispersal.
What is a Blastoconidia?
A blastoconidium (plural blastoconidia) is an asexual holoblastic conidia formed through the blowing out or budding process of a yeast cell, which is a type of asexual reproduction that results in a bud arising from a parent cell.
Why is the name spirogyra given?
The filamentous algae genus Spirogyra owes its name to the characteristic spiral shape of the chloroplasts possessed by its members. Sometimes alternatively known as water-silk, mermaid’s tresses, or pond scum, a large presence of the unbranched algae often indicates the nutrient enrichment of freshwater bodies.
What is Heterocyst function?
A heterocyst is a differentiated cyanobacterial cell that carries out nitrogen fixation. The heterocysts function as the sites for nitrogen fixation under aerobic conditions. They are formed in response to a lack of fixed nitrogen (NH4 or NO3).
What is the function of a akinete in cyanobacteria?
Akinetes are dormant cells of cyanobacteria species from the Nostocales and Stigonematales orders, allowing these phototrophic bacteria to survive in harsh and starvation conditions. These spore-like thick-walled, nonmotile cells differentiate from vegetative cells in response to environmental fluctuations.
Are basidiospores bad?
Are Basidiospores dangerous? If inhaled in significant amounts, Basidiospores can lead to serious health issues. Most issues are associated with the respiratory tract. Basidiospores have been reported in cases of allergic bronchopulmonary mycosis, allergic fungal rhinosinusitis and fungus associated chronic cough [5].
Are basidiospores toxic?
Concentrations are typically high in the background, as non-dangerous basidiospores are common outdoors. … Inhalation of basidiospores can have health effects ranging from pneumonia-like symptoms to cryptococcus meningitis if the infection isn’t treated before it spreads to the brain.
Can a Basidiomycete be a Mould?
Basidiospores in the home or business are a cluster of spores that may be indicative of a greater mold problem. These spores originate from a type of fungi called basidiomycetes, which includes mushrooms, toadstools, boletes, wood bracket fungi, and puffballs.
Which is asexual spore?
3.1 Asexual spores. Asexual spores are formed after mitosis (mitospores) without the involvement of meiosis. Fungi produce an enormous variety of asexual spores. Some species can produce several types of such spores. … One of the most important criteria was the formation of spores and their morphology.
Which is asexual spore in fungi?
conidium, a type of asexual reproductive spore of fungi (kingdom Fungi) usually produced at the tip or side of hyphae (filaments that make up the body of a typical fungus) or on special spore-producing structures called conidiophores.
Do all plants have Sporangia?
A sporangium (plural: sporangia) is the capsule structure belonging to many plants and fungi, in which the reproductive spores are produced and stored. All land plants undergo an alteration of generations to reproduce; the sporangium is borne upon the sporophyte, which is the asexual second generation structure.
What’s the difference between cyst and spore?
The key difference between cyst and spore is that cyst is a dormant stage of bacteria or protozoa that facilitates their survival during unfavourable environmental conditions, while spore is a reproductive structure that can develop into a new individual.
Can spores be killed?
A process called sterilization destroys spores and bacteria. It is done at high temperature and under high pressure. In health care settings, sterilization of instruments is usually done using a device called an autoclave.
How do you detect spores?
The use of microscopy to visualize is normally considered the best method to assess sporulation. Phase contrast can be used to observe endospores, as can the Moeller stain or malachite green staining methods which actually stain the endospore and thus are clear confirmation that sporulation occurred.
Do Chara have flagella?
Male and female reproductive structures are found on the nodes, and the sperm have flagella. Although Chara looks superficially like some land plants, a major difference is that the stem has no supportive tissue. However, the Charales exhibit a number of traits that are significant for adaptation to land life.
Why are Chara called Stoneworts?
They may be called stoneworts, because the plants can become encrusted in lime (calcium carbonate) after some time. The “stem” is actually a central stalk consisting of giant, multinucleated cells.
Which one of the following is wrong about Chara?
The globule is the male reproductive part and the nucule is the female reproductive part. The nucule or the oogonium lies above the globule or antheridium. Chara is a monoecious plant so it contains both male and female parts on a single plant. Hence, the right answer is option C.