Fungi

Organisms that are extremely small in size and can only be seen under a microscope, but not by naked eyes are called microorganisms. The five different groups of microorganisms are: Bacteria, Fungi, Protozoa, Virus and Algae.

Fungi are a group of organisms that grows on moist leather, bark of trees and starch or sugary food stuffs.

The branch of science that deals with the study of fungi is called mycology.

Fungi are eukaryotic, heterotrophic and achlorophyllous microorganisms. Hypha in fungi may be septate or aseptate. A tangled mass of hyphae is called mycelium.

On the basis of nutrition, fungi may be parasitic, saprophytic or symbiotic.

The reserved food materials in fungi include glycogen and fat. Some common examples of fungi are mould (mucor and Rhizopus), Yeast and Mushroom.

Bread moulds are saprophytic fungus. They have aseptate hyphae. The mycelium that forms the body of fungus is coenocytic. Their cell wall is made up of chitin along with proteins, lipids and polysaccharides. Bread mould reproduces by two methods i.e. asexual reproduction and sexual reproduction.

Yeasts are single celled fungi that occur singly or in the form of a budding chain. They belong to the genus Saccharomyce. Yeast reproduces asexually by the process of budding. They are used in baking and brewing industry.

Mushroom consists of rhizoid and the fruiting body. Certain varieties of mushroom are edible, but some varieties like fly agaric (Amanita muscaria) are poisonous.

To Access the full content, Please Purchase

  • Q1

    The organism that shows symbiosis between algae and fungi is

    Marks:1
    Answer:

    lichen.

    Explanation:
    Symbiosis is a relationship between two different species, which is mutually beneficial.
    View Answer
  • Q2

    Fungi show a symbiotic relationship with blue-green algae, in life forms called

    Marks:1
    Answer:

    lichens.

    Explanation:

    Lichens are composite organisms consisting of a symbiotic association of a fungus with a photosynthetic partner, usually either a green alga or cyanobacterium (commonly Nostoc).

    View Answer
  • Q3

    Fungi use decaying organic material as food and are, therefore, called

    Marks:1
    Answer:

    saprophytes.

    Explanation:
    Fungi are small, filamentous, branched, spore-bearing, heterotropic organisms that lack chlorophyll and most fungi are multicellular eukaryotes. They use decaying organic material as food and are, therefore, called saprophytes.
    View Answer
  • Q4

    Yeasts live in

    Marks:1
    Answer:

    colonies.

    Explanation:
    They join with other yeast cells and form a colony. Yeasts are unicellular fungi.
    View Answer
  • Q5

    Moulds can be seen through

    Marks:1
    Answer:

    hand lens.

    Explanation:
    Moulds belong to Kingdom Fungi.
    View Answer