Which of the following is true for the most important form of DNA damage which produces pyrimidine dimers from adjacent pyrimidine bases?

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#Question id: 38070

#Plant Biotechnology

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Direct somatic embryogenesis is generally rarer than indirect somatic embryogenesis.

Reason (R): Direct embryogenesis occurs from "Pre-Embryonic Determined Cells" (PEDCs) which are found only in specific embryonic tissues like the scutellum or nucellus.

In light of the above statements, choose the correct answer: 

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#Question id: 38071

#Plant Biotechnology

Given below are two statements:

Statement I: In Indirect Somatic Embryogenesis, the explant first proliferates into unorganized callus tissue before differentiating into embryos.

Statement II: IEDCs (Induced Embryogenic Determined Cells) need only a "permissive" signal to start embryogenesis and do not require dedifferentiation.

Choose the most appropriate answer: 

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#Question id: 38072

#Plant Biotechnology

Based on the "Origin" characteristic, which of the following correctly distinguishes a somatic embryo from a shoot bud? 

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#Question id: 38073

#Plant Biotechnology

Which structure is described as "Bipolar," possessing both shoot and root poles? 

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#Question id: 38074

#Plant Biotechnology

Regarding vascular connections with the callus or explant, which statement is true? 

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#Question id: 38075

#Plant Biotechnology

Why is a somatic embryo usually easily separated from the callus or explant?