Biology Chapter on Fungi and Algae

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Questions and Answers

Which of the following is NOT a characteristic of mycoplasma?

  • Can reproduce independently
  • Lacks a cell wall
  • Contains chlorophyll (correct)
  • Smallest free-living organisms

Fungi play an important role in the economic sector by decomposing organic matter.

True (A)

What are algal pigments responsible for?

Photosynthesis

The common economic role of fungi includes _____ and _____ production.

<p>antibiotic, food</p> Signup and view all the answers

Match the type of viral disease with its related symptoms:

<p>Yellow vein mosaic virus = Stunted growth and yellowing of leaves Citrus canker = Canker lesions on fruit and twigs Tobacco mosaic virus = Mottled yellowing and wrinkling of leaves Potato virus Y = Yellowing and curling of leaves</p> Signup and view all the answers

Isogamy and oogamy are both forms of sexual reproduction in algae.

<p>True (A)</p> Signup and view all the answers

Explain the significance of the eye spot in algal cells.

<p>It helps the algae detect light.</p> Signup and view all the answers

What is a distinguishing feature of fungal classification?

<p>Mode of reproduction (B)</p> Signup and view all the answers

Economic importance of fungi includes their use in ______ and __________.

<p>fermentation, bioremediation</p> Signup and view all the answers

Describe a symptom of virus infection in plants.

<p>Mottled leaves or stunted growth.</p> Signup and view all the answers

Fungi play a significant role in nutrient cycling and decomposition.

<p>True (A)</p> Signup and view all the answers

Name one major viral disease affecting plants.

<p>Tobacco mosaic virus</p> Signup and view all the answers

The economic importance of fungi includes ________ in food production.

<p>fermentation</p> Signup and view all the answers

Match the following fungal classifications with their descriptions:

<p>Zygomycetes = Form zygospores Ascomycetes = Produce ascospores Basidiomycetes = Form basidiospores Chytridiomycetes = Primarily aquatic fungi</p> Signup and view all the answers

What is the perfect stage of Aspergillus called?

<p>Ascocarp (B)</p> Signup and view all the answers

Localized infections spread throughout the body.

<p>False (B)</p> Signup and view all the answers

Identify the main symptom of early blight disease in potatoes.

<p>Dark, concentric lesions on leaves</p> Signup and view all the answers

______ bacteria are important in the nitrogen cycle as they convert ammonia into nitrates.

<p>Nitrifying</p> Signup and view all the answers

Which of the following algal pigments is primarily responsible for the green color in algae?

<p>Chlorophyll (C)</p> Signup and view all the answers

Which of the following pigments is commonly found in algae?

<p>Carotene (C), Chlorophyll (D)</p> Signup and view all the answers

Mycoplasma have a cell wall.

<p>False (B)</p> Signup and view all the answers

What is a major economic role of fungi?

<p>Fungi are used in food production, such as in the fermentation of bread and beer.</p> Signup and view all the answers

____ is the classification system commonly used for Fungi.

<p>Kingdom Fungi</p> Signup and view all the answers

Match the following fungal classifications with their examples:

<p>Ascomycetes = Saccharomyces cerevisiae Basidiomycetes = Agaricus bisporus Zygomycetes = Rhizopus stolonifer Chytridiomycetes = Batrachochytrium dendrobatidis</p> Signup and view all the answers

What disease is caused by the Yellow Vein Mosaic Virus?

<p>Mosaic disease in plants (D)</p> Signup and view all the answers

All edible mushrooms belong to the same genus.

<p>False (B)</p> Signup and view all the answers

How can smut of wheat be controlled?

<p>Smut of wheat can be controlled through crop rotation and the use of resistant varieties.</p> Signup and view all the answers

TMV stands for ____.

<p>Tobacco Mosaic Virus</p> Signup and view all the answers

Which fungus is commonly used for the production of beer and bread?

<p>Saccharomyces (C)</p> Signup and view all the answers

Flashcards

Vegetative reproduction in Saccharomyces

Asexual reproduction method in yeast (Saccharomyces) where new yeast cells arise from existing ones without the formation of spores or zygospores.

Perfect stage of Aspergillus

The sexual reproductive stage of the fungus Aspergillus, characterized by the formation of fruiting bodies.

Early blight of Potato

A common plant disease affecting potatoes, characterized by dark spots.

Basidiocarp of Agaricus

The fruiting body of the mushroom Agaricus, bearing basidia with basidiospores.

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AIDS

Acquired Immunodeficiency Syndrome, a disease caused by HIV.

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Yellow-vein mosaic virus disease

A disease caused by a virus, resulting in yellowing and discoloration of plant veins.

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Nitrifying bacteria

Bacteria that convert nitrogen in the environment into usable forms for plants.

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Difference between Mycoplasma and Phytoplasma

Mycoplasma are bacteria lacking cell walls, while Phytoplasma are bacteria lacking cell walls and a complex internal structure which is intracellular parasites or symbionts.

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Localized vs systemic infection

Localized infections are restricted to a specific area, while systemic infections affect the whole body.

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Hyperparasitism

A relationship where a parasite infects another parasite.

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Function of eye spot in algae

The eye spot in algae helps in detecting light intensity, aiding in photosynthesis.

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Isogamy vs. Oogamy

Isogamy involves equal-sized gametes; oogamy involves unequal-sized gametes (large ovum and small antherozoid).

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Planogametic copulation in fungi

The fusion of motile gametes in fungi.

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Reproduction by conidia in Alternaria

Asexual reproduction in Alternaria fungi via the formation of conidia.

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Life cycle of Agaricus

The series of stages in the life of Agaricus, a type of mushroom.

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Life history of Nostoc

The sequence of growth and reproduction stages in the Nostoc cyanobacteria.

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Asexual reproduction in bacteria

Bacteria reproduce asexually through binary fission.

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Principles of plant pathology

The scientific study of plant diseases. Covers pathogens, disease cycle, & control measures.

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Loose smut of Wheat

A plant disease of wheat involving loss of grain and affected inflorescence.

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Aspergillus classification

The systematic arrangement of Aspergillus species based on shared characteristics.

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Yeast economic importance

The practical uses of yeast in various industries, like baking and brewing.

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Edible mushrooms

Mushrooms that can be safely consumed as food.

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Wheat smut control

Methods to prevent or manage wheat smut disease.

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TMV diagram

A labeled illustration of Tobacco Mosaic Virus.

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Yellow Vein Mosaic Virus casual agent

The specific pathogen causing the Yellow Vein Mosaic Virus disease.

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Marchantia sporophyte longitudinal section

A drawing showing a cross-section of a mature Marchantia sporophyte.

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Riccia vegetative thallus morphology

Description of the form and structure of the vegetative part of Riccia.

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Sphagnum gametophore external morphology

Features describing the outer appearance and structure of Sphagnum gametophore.

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Anthoceros thallus internal structure

Explanation of the inner structure of Anthoceros plant.

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Study Notes

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