Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

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

Which statement is incorrect for cymose inflorescence?

  1. Basipetal arrangement of flowers

  2. The main axis continues to grow

  3. The main axis terminates in a flower

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

In a cymose inflorescence, the main axis terminates in a flower, which restricts its further continuous growth and results in a basipetal arrangement of flowers where older flowers are at the top. Therefore, the statement that the main axis continues to grow is incorrect.

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

Which of the following statements is not correct regarding mycorrhiza ?

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
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'
Multiple choice botany living world mycorrhiza classification of fungi kingdom monera, protista and fungi useful and harmful microbes

Mycorrhiza is the

  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.
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. Parasitic relationship

  2. Saprophytic relationship

  3. Symbiotic relationship

  4. Epiphytic relationship
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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

  1. Hyperparasite

  2. Mycorrhiza

  3. Endophyte

  4. Subterranean parasite
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.

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

Mycorrhiza does not help the host plant in:

  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.
Reveal answer Fill a bubble to check yourself
D Correct answer
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'
Multiple choice botany living world mycorrhiza classification of fungi kingdom monera, protista and fungi useful and harmful microbes

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

  1. VAM

  2. 1PM

  3. Legumes

  4. Cyanobacteria
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.