Microbes and Plant Diseases

Fungi are heterotrophic organisms that obtain nutrients through absorption. They can be saprophytes, parasites, or symbionts, making all the listed options correct.

The body of a fungus consists of long, slender thread-like structures called hyphae. The network of these hyphae is collectively known as mycelium.

Mushrooms are macroscopic reproductive structures produced by fungi, specifically within the phyla Basidiomycota.

Hyperthermophiles are organisms that grow at extremely high temperatures, typically above 80 degrees Celsius, such as in boiling water.

A stab culture is used to test for motility or oxygen requirements. Anaerobes are often cultured in deep agar stabs to minimize exposure to atmospheric oxygen.

Plants are autotrophs that produce their own food via photosynthesis, whereas fungi are heterotrophs that obtain nutrients by decomposing organic matter.

Plant diseases are caused by three main pathogen types: bacteria (blights, rots), fungi (rusts, mildews), and viruses (mosaics, leaf curls). Protozoa and paramecium are not plant pathogens, and COVID-19 affects humans.

Glomus is a genus of arbuscular mycorrhizal fungi that form symbiotic relationships with plant roots.

Cyclosporin A is an immunosuppressant drug produced by the fungus Trichoderma polysporum.

Aspergillus niger is an industrial fungus used for the commercial production of citric acid.

Trichoderma species are free-living fungi that are effective as biological control agents against several plant pathogens.

Plants are the primary example of autotrophs because they use chlorophyll to capture light energy and perform photosynthesis to create their own food.

Rust in plants, such as wheat rust, is a disease caused by parasitic fungi. It is not caused by viruses, bacteria, or protozoa.

Fungi are living organisms that obtain nutrients through absorption. As living entities, they are classified as biotic components of the environment.