The number of colonies obtained in a plate count does not depend on
-

: Ergot of rye is caused by
-

Aflatoxin produced by
-

4) Inhibitors like Protocatechuic acid and Catechol present in

5) Which fungi causes black wart disease of potato

: Amino acid considered as the precursor for the biosynthesis of phenolic compund is ]
-

7) Cork layer formation in Potato against —-

8) Onion smudge is caused by

9) Bacterial spot disease in Almond caused by

Full form of PAL ( chemical defence )
-

Phytoalexin production is stimulated in host by the presence of certain pathogenic substances called
-

The word 'alexin ' means
-

Phytoalexins have been isolated from which of the plant family
-

Muller(1961) proposed the role of______in disease resistance in plants?
-

____________ get deposited on the inner layerd of the cell walls due to invasion by fungal pathogen ]
-

: Choose the correct statements in the following
-

: Scab of potato is caused by
-

18) Which of the following is a chemical plant defense?

19) Plants have cellulose walls- What type of defense mechanism is this?

20) Fungal pathogens can enter their host by means of

21) A plant lacking secondary metabolites would likely

Choose a non host specific Toxin
-

Choose a non host specific Toxin
-

24) : Name the bacteria sps which enter the plant body through nectaries

25) First step in disease cycle

Botrytis cineria produces which types of enzymes ?
-

Choose a starch degrading enzyme
-

Name the Structure which is produced by obligate parasites during penetration
-

Which are the inoculum structures in fungi
-

Aggregation of hyphae forming root like structures are known as
-

: Which toxin inhibits light dependent phosphorylation of ADP to ATP
-

32) Name the structure produced by fungi which forms a bulb like structure upon infection

33) According to the source of origin, toxins are divided into 3 broad classes namely, pathotoxins, vivotoxins and ........

First reported Phytoalexin is
-

: Term Phytoalexin was first used by
-

Toxins produced by Pyricularia is
-

Pick out the correct statement
-

Liginase producing fungi cause a characteristic desease called
-

39) : Chemical weapon of plant pathology

40) .............are the overgrowths of the protoplast of adjacent living parenchymatous cells, which protrude into xylem vessels through pits.

41) According to the source of origin, toxins are divided into 3 broad classes namely, pathotoxins, vivotoxins and ........

Name the structure produced by fungi which forms a bulb like structure upon infection
-

Who discovered role of enzyme to disintegrate plant tissues in 1912
-

44) :Example for host specific toxin

General toxins are otherwise called
-