Tag: living world

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Questions Related to living world

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.

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

VAM is component of _________

  1. Ectomycorhiza

  2. Endomycorhiza

  3. Green manure

  4. Mycoherbicides
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The ectomycorrhiza is an association that takes place at the surface of the roots whereas the endomycorrizal fungi penetrate into the root cortex and form arbuscules within the root cells.

Vesicular Arbuscular Mycorrhizal (VAM) is a fungus that penetrates the roots of a vascular plant and helps them to capture the nutrients from the soil. 
So, VAM is a component of endomycorhiza.

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

Mycorrhiza is helpful in

  1. Synthesis of food

  2. Getting nutrients from soil

  3. Providing resistance against different regulators

  4. Increase the fertility of soil
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mycorrhizae are primarily mutualistic associations that enhance the plant's ability to absorb water and mineral nutrients, such as phosphorus and nitrogen, from the soil.