Tag: botany

Questions Related to botany

The hypanthodium inflorescence is characterised by?

botany reproductive morphology introduction to inflorescence inflorescence and its type basics of leaf and flower

  1. Presence of bisexual flower

  2. Pressure of unisexual male flowers near base

  3. Presence of trimorphic flowers

  4. Absence of gall flower

Show answer
Correct Option: A

Which statement is incorrect for cymose inflorescence?

botany reproductive morphology introduction to inflorescence inflorescence and its type basics of leaf and flower

  1. Basipetal arrangement of flowers

  2. The main axis continues to grow

  3. The main axis terminates in a flower

  4. Definite inflorescence

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Correct Option: A

Which of the following statements is not correct regarding mycorrhiza ?

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

  1. It helps In absorption of phosphorus from the soil.

  2. It is a symbiotic association of fungi with the roots of higher plants.

  3. It helps the plant in developing resistance to root-borne pathogens.

  4. None of these

Show answer
Correct Option: D
Explanation:
Mycorrhizae helps In absorption of phosphorus from the soil, it is a symbiotic association of fungi with the roots of higher plants, it helps the plant in developing resistance to root-borne pathogens.
So, the correct option is 'None of these'

Mycorrhiza is the

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

  1. Symbiotic association between fungus and roots of seed plants.

  2. Parasitic association between fungus and the roots of seed plants.

  3. Saprophytic association between fungus and roots of seed plants.

  4. All of the above.

Show answer
Correct Option: A
Explanation:

Mycorrhiza refers to the symbiotic association of a fungus and roots of vascular plants. During this association, the fungus colonizes on the roots of the host seed plants either intracellularly or extracellulary and is generally mutualistic rather than pathogenic.

Thus, the correct answer is option A.

Mycorrhiza is a symbiotic association between root and

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

  1. Alga

  2. Fungus

  3. Bacteria

  4. Virus

Show answer
Correct Option: B
Explanation:
Mycorrhizas are symbiotic relationships between fungi and plant roots
So, the correct answer is 'Fungus'

A mycotrophic humus plant is

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

  1. Neottia

  2. Wullschleigelia

  3. Monotropa

  4. None of the above

Show answer
Correct Option: A
Explanation:

Neottia is a mycotrophic humus plant because it feeds on fungi for obtaining food and energy. This is because these plants lack chlorophyll to make their own food material.

So, the correct option is 'Neottia'.

Mycorrhiza, a relationship between fungi and roots of higher plants is

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

  1. Parasitic relationship

  2. Saprophytic relationship

  3. Symbiotic relationship

  4. Epiphytic relationship

Show answer
Correct Option: C
Explanation:

Mycorrhiza is a symbiotic association between Fungi and roots of higher plants, which grow in mineral deficient soil. It helps to absorb water and minerals like phosphorous from soil for the benefit of plant and in turn gets nutrition from the plant, as fungi cannot synthesize its own food.

So, the correct answer is option C.

A symbiotic association between fungus and underground part of a plant is

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

  1. Hyperparasite

  2. Mycorrhiza

  3. Endophyte

  4. Subterranean parasite

Show answer
Correct Option: B
Explanation:

A. Hyperparasite is an organism which lives off another parasite.

B. Mycorrhiza is the symbiotic relationship between vascular plant root and fungi. Its name comes from "myco" means fungi and "rhiza" means roots. Fungi come into direct contact with plant roots and with soil, adding to the plant's ability to gather nutrients and water from the soil through the fungus.
C. Endophyte is a bacterium or fungus which lives inside the plant for at least a part of its life cycle.
D. subterranean parasite is a parasite which lives underground on roots etc 
So, the correct answer is 'Mycorrhiza'.

Mycorrhiza does not help the host plant in:

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

  1. enhancing its phosphorus uptake capacity

  2. increasing its tolerance to drought

  3. enhancing its resistance to root pathogens

  4. increasing its resistance to Insects.

Show answer
Correct Option: D
Explanation:
Mycorrhiza helps the host plant in enhancing its phosphorus uptake capacity, in increasing its tolerance to drought. Mycorrhiza produces some chemicals which resist the pathogen like Fusarium.
So, the correct option is 'increasing its resistance to insects'

Which one of the following plays an important role in phosphate nutrition of plants? 

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

  1. VAM

  2. 1PM

  3. Legumes

  4. Cyanobacteria

Show answer
Correct Option: A
Explanation:

Role of VAM in Nutrient uptake of crop plants:

  • Microorganism and their role in soil must be considered as a key component among those conferring soil fertility and productivity.
  • One of the most important plants-microbe interactions is the association of vesicular-arbuscular mycorrhizae (VAM) fungi with higher plants.
So, the correct option is 'VAM'.