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Ques.6: What is the classification of Parasitic Fungal Spores?Īns: Parasitic Fungal Spores are classified into internal spores which germinate within the host and external spores, also called environmental spores, released by the host to infect other hosts.Īns: The forcible discharge of single spores known as Ballistospores which helps in the formation of a small drop of water is called a Buller Drop.Īns: Hydrophobins are one kind of specialized mechanical and physiological mechanism of spore ejection for many fungi.Īns: Puffballs are fungi other than Ballistospores that eject their spores by external forces. (i) Cool place, (ii) Moist place and (iii) Dark place.Īns: Spores that are produced by Carposporophytes, characteristic of Red Algae are Carpospores.Īns: Spores that are produced by tetrasporophytes, characteristic of Red Algae, are Tetraspores. The conditions that are favourable for the spore formation are: List three conditionsįavourable for spores to germinate and grow.Īns: Rhizopus reproduces by spore formation. Ques.3: Name an organism which reproduces by spore formation. (ii) Offsprings that are produced are identical. (i) Spore formation is the faster mode of reproduction. (c) Two advantages for organisms to reproduce themselves through spores are as follows: (c) List two advantages for organisms to reproduce themselves through spores.Īns: (a) When a slice of bread is kept in a moist dark place the spores of Rhizopus present in air settle down on the bread to form new fungus plants of Rhizopus. (b) Draw a diagram showing spore formation in Rhizopus. Ques.1 : Illustrate the following with the help of suitable diagrams: Sample Questions Based on Spore Formation This ejection is necessary to ensure the exit of the spores.In fungi, spores are actively dispersed from their reproductive structure by forcible ejection.Statismospores: Spores that are forcibly discharged as the result of an external force from the fungal fruiting body.Įxample: Puffballs.Ballistospores: Spores that are forcibly discharged as the result of an internal force from the fungal fruiting body.Autospores: These are immobile flagella that can not develop flagella.Aplanospores: These are immobile flagella but sometimes can move potentially.Zoospores: These are mobile spores moves by Flagella.Spores are also classified on the basis of Mobility like Fungi in which only mitospores are found are called Mitosporic Fungi or Anamorphic Fungi.They are characteristic of Ascomycetes.Mitospores are also known as Conidia or Conidiospores.When one Meiospore gives rise to a female Gametophyte, it is called a Megaspore. When one Meiospore gives rise to a male Gametophyte, it is called a Microspore. Meiospores are also classified as microspores and Megaspores. Ulva: The zoospores are produced from meiosis in the sporophytes of algae-like Ulva. It is found mainly in Angiosperms or Gymnosperms.Examples: Precursor cells of Gametophytes found in many flowers and cones.Meiospore gives rise to a haploid daughter cell or a haploid individual.Meiospores are the spores produced by Meiosis.Spores are also classified on the basis of cell division like Meiospores and Mitospores. Oospores Oospores are the spores that are produced by an oogonium for many fungi like Oomycetes.Teliospores: Teliospores are the spores that are produced by a Telium for many fungi like Rusts or Smuts.Urediniospores: Urediniospores are the spores that are produced by a Uredinium for many fungi like Rusts or Smuts.
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Aeciospores: Aeciospores are the spores that are produced by an Aecium for many fungi like Rusts or Smuts.Basidiospores: Basidiospores are the spores that are produced by Basidium for many fungi like Basidiomycetes.Ascospores: Ascospores are the spores that are produced by an Ascus, for many fungi like Ascomycetes.Zygospores: Zygospores are the spores that are produced by Zygosporangium for many fungi like Zygomycetes.Sporangiospores: Sporangiospores are the spores that are produced by Sporangium for many fungi like Zygomycetes.