Where are plasmodesmata located?

Assertion $A$: The cell wall is present as an outer covering around the plasma membrane.
Reason $R$: The cell wall is semi-fluid and functionally dynamic.

Penicillin kills bacteria because it .........

The chemical substance most abundantly present in the middle lamella is

The middle lamella between plant cells is composed of which substance?

$I.$ Found only in sporophytic phase of life cycle
$II.$ May contain enzymes that are biologically active
$III.$ Often contain strengthening polymers
Select the correct option for cell wall