PLANTS
PLANT TISSUE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Adventitious organs arising from a callus culture or directly from an explant
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Adventitious organs arising from a Eahy.926 or directly from an explant
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Formation of axillary bud to regenerate whole plants from some types of tissue culture
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Formation of auxin to regenerate whole plants from some types of tissue culture
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Detailed explanation-1: -The process of organogenesis involves two steps: dedifferentiation and redifferentiation. Dedifferentiation results in the formation of callus from the explant tissue with accelerated cell division. Whereas, redifferentiation causes the development of primordia from a group of callus cells.
Detailed explanation-2: -The thirteen factors are: (1) Size of Explant (2) Source of Explant (3) Age of the Explant (4) Seasonal Variation (5) Oxygen Gradient (6) Quality and Intensity of Light (7) Temperature (8) Plant Hormones (9) Culture Medium (10) Agar-Agar (11) pH of the Medium (12) Ploidy Level and (13) Age of Culture.
Detailed explanation-3: -Such plasticity provides the ability to regenerate whole organs and plants via dedifferentiation of cells and reprogramming of cell fates. There are three main types of regeneration: (1) Tissue regeneration, (2) de novo organogenesis, and (3) somatic embryogenesis (Xu and Huang, 2014; Sugimoto et al., 2019).
Detailed explanation-4: -Caulogenesis is a type of organogenesis by which only adventitious shoot bud initiation takes place in the callus tissue. When organogenesis leads to root development, then it is known as rhizogenesis.