Plant Pathology - Study Mode

[#351] Bacteria and fungi are the pathogens belonging to
Correct Answer

(A) Biotic type

Explanation

Solution: Bacteria and fungi are pathogens belonging to the biotic type. Fungi are a biotic factor in the ecosystem. Biotic factors include people, animals, fungi, bacteria, etc. Abiotic factors are non-living components of an ecosystem mainly including soil, water, temperature and weather.

[#352] Downy mildew include in
Correct Answer

(A) Oomycetes

Explanation

Solution: Downy mildew includes in Oomycetes. Downy mildew refers to any of several types of oomycete microbes that are obligate parasites of plants. Downy mildew, is a disease of plants, especially in cool humid regions, caused by several fungus-like organisms of the phylum Oomycota. White, gray, bluish, or violet downy patches of mildew form mostly on the undersides of leaves in damp weather.

[#353] Class of Ascomycetes that comprises of naked asci is
Correct Answer

(B) Saccharomycetes

Explanation

Solution: The class of Ascomycetes that comprises naked asci is Saccharomycetes. Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota, forms the subkingdom Dikarya. Its members are commonly known as sac fungi or ascomycetes. Naked asci occur in simple ascomycetes, asci are produced on the organism's surface. Saccharomycetes is a subdivision of the division Ascomycota in the kingdom Fungi. It comprises most of the ascomycete yeasts.

[#354] The most important symptom of wilt of cotton (caused by Fusarium oxysporum vasinfectum) is
Correct Answer

(C) Discolouration of tissues and plugging of vessels by hyphae

Explanation

Solution: The most important symptom of wilt of cotton (caused by Fusarium oxysporum vasinfectum) is Discolouration of tissues and the plugging of vessels by hyphae. Fusarium wilt, caused by the fungus Fusarium oxysporum f. sp. vasinfectum, is a major disease of cotton capable of causing significant economic loss. The fungus persists in the soil as chlamydospores and association with the roots of susceptible, resistant and non-cotton hosts as well as in seed. Symptoms include yellowing, stunting, and death of seedlings and yellowing and stunting of older plants.

[#355] Supply end in solute transport is
Correct Answer

(C) Green leaves and storage organs

Explanation

Solution: Supply end in solute transport is Green leaves and storage organs. In any solute transport system, the supply end is an area or site, where the transported substance like food or water is stored for further use. It is mostly any storage organ or green leaves.