Tag: plant diseases

Questions Related to plant diseases

Match List I with List II and select the correct answer.

List-I List-II
a. Ascobolus $1$. Lignicolous
b. Erysiphe $2$. Bunt disease
c. Polyporous $3$. Ectoparasite
d. Tilletia $4$. Coprophilous
plant diseases keeping diseases away biology

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

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

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

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

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Correct Option: A

The staple crop in Ireland was completely destroyed in $1844-1846$, by a fungal disease resulting in a great famine. The causal organism in this case was _____________.

plant diseases keeping diseases away biology

  1. Puccinia graininis

  2. Ustilago tritici

  3. Phytophthora infestans

  4. Claviceps purpurea

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Correct Option: A

Consider the following organisms.
a. Viruses
b. Bacteria
c. Mycoplasmas
d. Fungi
The correct chronological sequence in which they were, recognized as incidents of plant diseases is?

plant diseases keeping diseases away biology

  1. $1, 2, 3, 4$

  2. $4, 2, 1, 3$

  3. $4, 1, 3, 2$

  4. $1, 4, 2, 3$

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Correct Option: A

Which one of the following pairs is NOT correctly matched?

plant diseases keeping diseases away biology

  1. Wart disease - Synchytrium of potato endobioticum

  2. Soft rot of- Phtomonas ricinii of wheat ears

  3. Bacterial rot- Phytomonas ricinii of wheat ears

  4. Late blight- Phytophthora infections of potato

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Correct Option: A

Match List-I with List-II and select the correct answer.

List-I(Common name) List-II(Scientific name)
a. White rust $1$. Puccinia graminis
b. Yellow rust $2$. Puccinia triticina
c. Brown rust $3$. Puccinia glumarum
d. Black rust $4$. Albugo candica
plant diseases keeping diseases away biology

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

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

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

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

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Correct Option: A

Crown gall symptoms are present in ______________.

plant diseases keeping diseases away biology

  1. Peas, apple and sugarcane

  2. Pear, grapes and sugarcane

  3. Apple, grapes and sugarcane

  4. Pear, apple and grapes

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Correct Option: A

Consider the following events.
a. Germ tube formation
b. Aspersoria formation
c. Penetration
d. Haustoria's formation.
The correct sequence in which these events take place during plant infection is?

plant diseases keeping diseases away biology

  1. $2, 1, 4, 3$

  2. $2, 3, 1, 4$

  3. $1, 2, 3, 4$

  4. $1, 2, 4, 3$

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Correct Option: A

Crown gall disease enhances ________________.

plant diseases keeping diseases away biology

  1. Meristematic activity

  2. Development of chloroplasts

  3. Reduction in leaf size

  4. Alteration in the morphology of flowers

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Correct Option: A

Which one of the following diseases is caused by mycoplasma-like organism?

plant diseases keeping diseases away biology

  1. Sugarcane mosaic disease

  2. Wilt disease of sugarcane

  3. Ring spot of sugarcane

  4. Grassy shoot of sugarcane

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Correct Option: A

Which of the following is not a viral disease of plants?

plant diseases keeping diseases away biology

  1. Red rot of sugarcane

  2. Tobacco mosaic disease

  3. Leaf curl of tomato

  4. Tristeza disease of citrus

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Correct Option: A
Explanation:

Red decay is the most widely recognized infection of sugarcane, caused by the growth Colletotrichum falcatum Went. 

So, the correct option is 'Red rot of sugarcane'.