The following statements are made regarding volatile compounds of plant;

a) secondary metabolites also fuction in defence mechanism but this is not the volatile compound

b) These volatiles can act as cues for natural enemies of the insect herbivore such as parasitic wasps

c) All plants releases green-leaf volatiles in response to mechanical damage that is a mixture of aldehydes, alcohols, and esters

d) These volatiles attracts natural enemies of the attacking insect herbivores—predators or parasites

Which one of the following options represents a combination of correct statements?

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#Question id: 28424

#Unit 5. Developmental Biology

 During development in avian embryo, the cells Formed at the posterior edge of the area pellucida is called as___

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#Question id: 28425

#Unit 5. Developmental Biology

The one sheet of cells into two sheets of cells formation during hypoblast formation in avian embryogenesis is termed as__ 

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#Question id: 28426

#Unit 5. Developmental Biology

A sheet of cells that grows anteriorly from Koller’s sickle combines with the primary hypoblast to form the complete hypoblast layer is termed as___

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#Question id: 28427

#Unit 5. Developmental Biology

At which stage of avian development secondary hypoblast or endoblast formation is takes place?

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#Question id: 28428

#Unit 5. Developmental Biology

Two-layered blastoderm epiblast and hypoblast is joined together at the marginal zone of the area opaca, and the space between the layer's forms ____

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#Question id: 28429

#Unit 5. Developmental Biology

At which stage the primitive streak cells form a third layer that lies between the hypoblast and epiblast cells?