A living cytoplasmic connection penetrate the walls between sieve tube elements and their companion cells; which are often complex and branched on the companion cell side, known as

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#Question id: 19309

#Unit 4. Cell Communication and Cell Signaling

What is the role of fusicoccin?

a) reversibly opening of stomata

b) Plant wilting

c) tumour formation

d) Apoptosis of tissue

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#Question id: 19308

#Unit 4. Cell Communication and Cell Signaling

Match the following;

Column A	Column B	Column C
A) Attack strategy	i) Secreted cell wall‐degrading enzymes   ii) Intimate intracellular contact with plant cells   iii) Initial biotrophic phase	a) Necrotrophy
		b) Biotrophy
B) Host range	iv) Intermediate   v) Narrow   vi) Broad	c) Hemibiotrophy

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#Question id: 19105

#Unit 4. Cell Communication and Cell Signaling

The type III secretion system (T3SS), to deliver bacterial effector proteins into the plant cell have been identified to be secretion of enzymes which causes dead of the plant, these enzymes are;

a) Phosphatases

b) Proteases 

c)  Lyases

d) Isomerase

e) Ligase

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#Question id: 19104

#Unit 4. Cell Communication and Cell Signaling

The structural components of the T3SS are encoded by the clustered gene known as

TLS Online TPP Program

#Question id: 19103

#Unit 4. Cell Communication and Cell Signaling

During infection, most bacteria remain in extracellular spaces and use a specialized mechanism, to deliver bacterial effector proteins into the plant cell that is

TLS Online TPP Program

#Question id: 19102

#Unit 4. Cell Communication and Cell Signaling

Phytoplasmas are specialized bacteria that are obligate parasites of the phloem tissue. They are mainly spread by these insects except;