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  • Choose the correct statementOption: 1 The movement of ions into apoplast is an active process

Choose the correct statement

Option: 1

The movement of ions into apoplast is an active process


Option: 2

Movement of ions into apoplast occurs through ion channels, transmembrane proteins etc. 


Option: 3

The entry or exit of ions to and from the symplast occurs without the expenditure of metabolic energy


Option: 4

In the first phase of ion uptake, an initial rapid uptake of ions into the ‘outer space of cells – the symplast, is passive.


Answers (1)

best_answer
 

In the first phase, an initial rapid uptake of ions into the ‘free space’ or ‘outer space’ of cells – the apoplast, is passive. The passive movement of ions into the apoplast usually occurs through ion-channels, the trans-membrane proteins that function as selective pores. On the other hand, the entry or exit of ions to and from the symplast requires the expenditure of metabolic energy, which is an active process. Hence, the correct answer is option b.

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