Tag: plant diseases

Questions Related to plant diseases

Which one of the following types of organisms causes the disease Potato Witches broom?

  1. Virus

  2. Mycoplasma

  3. Fungus

  4. Bacteria


Correct Option: A

The foul fishy smell of a volatile chemical trimethylamine in the disease infested wheat field is an indicator of ____________.

  1. Rust

  2. Smut

  3. Blast

  4. Bunt


Correct Option: A

With reference to the introduction of plant disease into India from other countries, consider the following pairs.
a. Bunchy top of banana- Ceylon(Sri Lanka)
b. Potato tuber moth- Italy
c. Flag sumut of wheat- Fiji
Which of the pairs is/are correctly matched?

  1. $1$ and $2$ only

  2. $2$ only

  3. $1$ and $3$ only

  4. $1, 2$ and $3$


Correct Option: A

Leaf hopper which acts as a vector in. The transmission of Tungro virus disease of rice is?

  1. Sagatella orizicola

  2. Inazuma dorsalis

  3. Nilaparvata lugans

  4. Nephotettix impicticeps


Correct Option: A

Match List I(Name of plant disease) with List II(Name of Pathogen) and select the correct answer.

List-I List-II
a. Angular leaf spot of cotton $1$. Phytophora infestans
b. Late blight of potato $2$. Colletotrichum falcatum
c. Red rot of sugarcane $3$. Cercospora personata
d. Tikka leaf spot of groundnut $4$. Xanthornonas malvacearum
  1. A-$3$, B-$1$, C-$4$, D-$2$

  2. A-$4$, B-$1$, C-$2$, D-$3$

  3. A-$3$, B-$4$, C-$2$, D-$1$

  4. A-$4$, B-$2$, C-$1$, D-$3$


Correct Option: A

Which one of the following complexes is responsible for the cause of Tundu disease in wheat?

  1. Fungus-nematode

  2. Nematode-bacterium

  3. Fungus-bacterium

  4. Virus-fungus


Correct Option: A

The disease little leaf of fruit trees is caused by the deficiency of ______________.

  1. Copper

  2. Zinc

  3. Manganese

  4. Cobalt


Correct Option: A

Consider the following:
1. Bacillus subtilis                 2. Trichadiama viride
3. erysiphe graminis             4. Septoria glycines
Which of the above antagonistic orgaanisms is /are capable of suppressing plant disease?

  1. 1 and 2

  2. 2 and 3

  3. 2, 3 and 4

  4. 1 only


Correct Option: A

Match List-I with List-II and select the correct answer using the codes given the lists.

List-I(Disease) List-II(Pathogen)
a. Bacterial blight of paddy $1$. Pseudomonas
b. Brown rot of potato $2$. Corynebacterium
c. Tundu disease of wheat $3$. Erwinia
d. Fire blight of apples $4$. Xanthomonas
  1. A-$1$, B-$2$, C-$3$, D-$4$

  2. A-$4$, B-$1$, C-$2$, D-$3$

  3. A-$3$, B-$2$, C-$1$, D-$4$

  4. A-$2$, B-$3$, C-$4$, D-$1$


Correct Option: A

Which one of the following is a disease caused by zinc deficiency?

  1. Die back of rice

  2. Khaira disease of rice

  3. Black heart of potato

  4. Brown spot of rice


Correct Option: A