Increased interest in root cultures during the 1980s was mainly due to:

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#Question id: 37878

#Plant Biotechnology

Assertion (A): In a closed continuous culture system, the total cell biomass continues to increase over time. 

Reason (R): In this system, cells are separated from the removed spent medium and recycled back into the culture vessel

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#Question id: 37879

#Plant Biotechnology

Assertion (A): Open continuous cultures are capable of maintaining cells in a steady state of submaximal growth indefinitely.

Reason (R): In open continuous cultures, only the spent medium is removed while the cells are retained within the bioreactor.

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#Question id: 37880

#Plant Biotechnology

Assertion (A): To maintain a steady state in an open continuous culture, the volume of fresh medium added must be equal to the volume of culture removed. 

Reason (R): Without balancing the input and output volumes, the culture volume would change, disrupting the steady state and nutrient availability.

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#Question id: 37881

#Plant Biotechnology

Assertion (A): Continuous culture systems are strictly classified as closed systems where no material leaves the vessel. 

Reason (R): Continuous cultures require the regular replacement of a portion of the spent medium with fresh medium.

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#Question id: 37882

#Plant Biotechnology

Statement I: Plant cells can be immobilized by encapsulating them in materials such as agarose or calcium alginate gels. 

Statement II: Immobilized cells are usually packed in a column where liquid medium is kept stagnant to prevent cell detachment.

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#Question id: 37883

#Plant Biotechnology

Consider the following statements regarding the immobilization of plant cells:

A. Cells can be entrapped in membranes or stainless-steel screens.

B. Immobilization ensures that the cellular physiology remains exactly the same as in suspension cultures.

C. This technique is advantageous for biochemical production. 

D. Liquid medium is continuously run through the column to provide aeration and nutrients.

Which of the statements given above are correct?