Plant diseases - class-X
| Description: plant diseases | |
| Number of Questions: 52 | |
| Created by: Anumati Koshy | |
| Tags: biology keeping diseases away |
Pusa Swarnim a variety of Brassica is resistant to
Plants protect themselves from fungi by producing.
Which of the following is a bacterial plant disease
Symptoms of red rot disease appear over :
Match List I (Disease) with List II (Causal Organism) and select the correct answer using the code given below the lists:
| List I | List II | ||
|---|---|---|---|
| A. | Blast disease of rice | 1. | Ustilago nuda |
| B. | Loose smut of wheat | 2. | Xanthomonas malvacearum |
| C. | Black arm of cotton | 3. | Ustilago scitaminae |
| D. | Whip smut of sugarcane | 4. | Pyricularia oryzae |
Pusa Komal variety of Cow Pea Is resistant to disease
Plants can be made disease resistant through
On the basis of symptoms of chlorosis in leaves a student inferred that this was due to deficiency of nitrogen. This inference could be correct only if we assume that yellowing of leaves appeared first in.
An Albugo caused disease in which pustules on the surface of leaves, stem inflorescence and floral parts along with various type of deformities of which, hypertrophy is most pronounced, are the characteristic symptoms of ___________________.
Which one of the following statements is not correct?
Which one of the following types of organisms causes the disease Potato Witches broom?
The foul fishy smell of a volatile chemical trimethylamine in the disease infested wheat field is an indicator of ____________.
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?
Leaf hopper which acts as a vector in. The transmission of Tungro virus disease of rice is?
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 |
Which one of the following complexes is responsible for the cause of Tundu disease in wheat?
The disease little leaf of fruit trees is caused by the deficiency of ______________.
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?
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 |
Which one of the following is a disease caused by zinc deficiency?
Which of the following pairs are correctly matched? Disease Causal organism.
a. Kamal bunt of wheat - Fungus
b. Khaira disease of rice- Bacterium
c. Fiji disease of sugarcane- Virus
d. Purple top of potato-Mycoplasma
Select the correct answer from the codes given.
The toxic substance produced by the pathogen causing Brown leaf spot of rice, harming seedlings reducing respiration of the host is?
Consider the following diseases of plants.
a. Root knot of sugar-cane.
b. Root rot of wheat.
c. Wilt of cotton.
d. Angular leaf spot of cotton.
Which of these diseases is/are caused by fungi?
Which one of the following pairs is not correctly matched?
Which one of the following diseases of rice is not caused by microbe?
Which one of the following pairs is not correctly matched?
Which one of the following pairs of plant diseases and symptoms is correctly matched?
Which one of the following is a copper fungicide?
The major effect of crown gall pathogen on its hosts is the ______________.
Which one of the following antagonists has been commercialized for the biological control of plants 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 |
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 _____________.
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?
Which one of the following pairs is NOT correctly matched?
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 |
Crown gall symptoms are present in ______________.
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?
Crown gall disease enhances ________________.
Which one of the following diseases is caused by mycoplasma-like organism?
Which of the following is not a viral disease of plants?
In plants, mosaic formation, leaf rolling and curling, yellowing of plant parts, vein clearing, dwarfing and stunted growth, necrosis etc. are the symptoms of
Which one of the following fungi has been found useful in the biological control of plant diseases?
A wheat plant is infected by the aecidiospores of black stem rust fungus produced on the alternate host. What is the correct sequence of the following stages in the disease cycle?
a. Uredo stage
b. Pycnidial stage
c. Basidial stage
d. Teleuto stage
e. Aecidial stage
Select the correct answer using the codes given.
The well-known famine in Ireland in the $40$s has been attributed mainly to the failure of the potato crop which was infected by.
Biological control of some soil-borne plant diseases has been achieved through the use of __________.
Which one of the following is a causal agent of wart disease of potato?
Turnip mosaic disease is caused by
Which of the following diseases is caused by bacteria?
Pyricularia oryzae causes
Which of the following diseases is caused by virus?
Khaira is a plant disease caused due to the deficiency of
Which of the following is not a fungal disease?