Question

Liquid content of a vacuole is called
A. Cell sap
B. Matrix
C. Nucleoid
D. Core

Answer 1

Hint:- In biology, the vacuole is a cavity inside a cell that is vacant of a cytoplasm, lined with a membrane and filled with fluid. Vacuoles are cytoplasmic organs (organelles), especially in protozoa, performing functions such as preservation, absorption, digestion, excretion, and excess water expulsion. Sometimes seen in plant cells, the large central vacuoles allow them to reach a large size without accumulating the bulk that would make metabolism difficult.

Complete Answer:-For some cell types and environments, most mature plant cells have one large vacuole that usually occupies more than 30 percent of the volume of the cell, and that can occupy as much as 80 percent of the volume. Cytoplasm strands also pass through the vacuole. A vacuole is surrounded and packed with cell sap by a membrane known as the tonoplast. The tonoplast, also referred to as the vacuolar membrane, is the cytoplasmic membrane covering a vacuole, distinguishing the vacuolar material from the cytoplasm of the cell.
It is specifically involved in monitoring the flows of ions around the cell as a membrane and isolating compounds that may be toxic or a danger to the cell. The central vacuole's key function, aside from storage, is to retain turgor pressure against the cell wall. Proteins present in the tonoplast (aquaporins) regulate the flow of water by active transport into and out of the vacuole, circulating potassium ions into and out of the vacuolar interior.
 From these discussions we can conclude that cell sap is the liquid content of a vacuole.

Therefore the correct answer is option (A).

Note:- In autophagy, vacuoles often play a major role in maintaining a balance between biogenesis (production) and degradation (or turnover) of some cells of several substances and cell structures. They also help in the lysis and recycling inside the cell of misfolded proteins that have started to build up.