Explain holotype, isotype, paratype, lectotype and neotype. Mention the advantages of binomial system of plant nomenclature.
In plant nomenclature, "types" are designated specimens serving as permanent references for scientific names.
The binomial system of plant nomenclature, established by Linnaeus, offers several key advantages:
This standardized approach ensures scientists worldwide can precisely identify and communicate about plant species.
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How many types of gametophytes are found in Lycopodium? Why is it difficult to collect such prothalli in nature?
How does heterocyst differ from vegetative cell ? Mention the factors controlling its formation and add a note on functions of heterocysts.
Explain how the numerical expression of data is utilized in plant systematics.
"Mycoplasma causes serious diseases in humans, animals and plants." Substantiate the statement with suitable examples.
How does the infection of a pathogen affect the host plant physiology?
Enumerate the types of fruiting bodies of Ascomycota and Basidiomycota. Write the various steps of ascus formation in Ascomycetous members with suitable illustrations.
What are the various modes of infection and dissemination of plant diseases caused by viruses ? Describe.
Briefly describe the male and female strobili of Gnetum with suitable labelled diagrams. Why should you consider this plant a gymnosperm?
Discuss how progressive sterilization of sporogenous tissue occurs in bryophytes, with suitable diagrams and examples.
Describe the ranges of thallus organization in the members of Chlorophyceae.
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Describe the embryogenesis, clinical features and principles of management of cleft palate.
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Metagenesis
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Book lungs
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Paedomorphosis