Tag: botany

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Questions Related to botany

Multiple choice botany living world mycorrhiza classification of fungi kingdom monera, protista and fungi useful and harmful microbes

Mycorrhiza promotes plant growth by

  1. Absorbing inorganic ions from soil

  2. Serving as plant growth regulator

  3. Protecting plant from infection

  4. Helping plant in using atmospheric nitrogen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mycorrhizae primarily enhance plant growth by increasing the surface area for the absorption of inorganic ions, particularly phosphorus, from the soil.

Multiple choice botany living world mycorrhiza classification of fungi kingdom monera, protista and fungi useful and harmful microbes

Mycorrhiza generally occurs in :

  1. Alkaline soils

  2. Acidic soils

  3. Oligotrophic soils

  4. Eutrophic soils
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

They prefer marshy environment and utilize dead and decaying material as food. Oligotrophic soil ( in between layers) have the above mentioned requirements in good quantities.Thus, the fungi prefer the oligotrophic soil for their survival

 So, the correct answer is 'Oligotrophic soils'

Multiple choice botany living world mycorrhiza classification of fungi kingdom monera, protista and fungi useful and harmful microbes

In mycorrhiza, the fungal hyphae 

  1. Remain restricted to the root surface.

  2. Remain restricted upto the root cortex.

  3. Pass into the root interior.

  4. Enter the root apex and reach all parts.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mycorrhiza involves a symbiotic association between fungi and plant roots. In most cases, the fungal hyphae penetrate the root cortex but do not enter the vascular cylinder or the root apex.

Multiple choice botany living world mycorrhiza classification of fungi kingdom monera, protista and fungi useful and harmful microbes

In mycorrhiza, the tips of fungal hyphae occur inside cortical cells in _______

  1. Ectomycorrhiza

  2. Endomycorrhiza

  3. Extomycorrhiza

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The cortex is only one cell thick and these cells are packed with fungal hyphae. The nutrient exchange between the fungus and plant takes place at this interface and is extremely efficient

Multiple choice botany living world mycorrhiza classification of fungi kingdom monera, protista and fungi useful and harmful microbes

Ectomycorrhiza is found in

  1. Several trees and shrubs of tropical areas

  2. Many vascular plants of tropical area

  3. Several trees and shrubs of temperate areas

  4. Small vascular plants
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ectomycorrhiza is a type of symbiotic association typically found in woody plants, such as trees and shrubs, in temperate forest ecosystems.

Multiple choice botany living world mycorrhiza classification of fungi kingdom monera, protista and fungi useful and harmful microbes

Fungal hyphae remain intercellular in

  1. Endomycorrhiza

  2. VAM

  3. Ectomycorrhiza

  4. Both A and B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In ectomycorrhiza, the fungal hyphae form a mantle around the root and grow between the cortical cells (intercellularly) without penetrating the cell walls. Endomycorrhiza (including VAM) involves intracellular penetration.

Multiple choice botany living world mycorrhiza classification of fungi kingdom monera, protista and fungi useful and harmful microbes

Plants growing in oligotrophic forest soils usually have

  1. Mycorrhiza

  2. Slow growth

  3. Reduced growth

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oligotrophic soils are nutrient-poor. Mycorrhizal associations help plants survive in these conditions by significantly increasing the surface area for nutrient absorption, particularly phosphorus.