What happens when a formalin-preserved Spirog | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Formalin is a chemical fixative used to preserve biological specimens. When a $Spirogyra$ filament is preserved in formalin,the cell membrane and

Vedclass · Accepted Answer

Nothing happens

Vedclass · Answer

(D) Formalin is a chemical fixative used to preserve biological specimens. When a $Spirogyra$ filament is preserved in formalin,the cell membrane and cytoplasm are chemically fixed and denatured,rendering the cell dead and non-functional. Osmosis and plasmolysis are physiological processes that require a living,semi-permeable membrane to occur. Since the cells are dead,they lose their selective permeability,and therefore,no osmotic movement of water occurs when placed in a hypertonic solution. Thus,nothing happens to the filament.

What happens when a formalin-preserved $Spirogyra$ filament is placed in a hypertonic sugar solution?

Similar Questions

Algae float in the water during day time and sink during night time because

Which type of sexual reproduction occurs in algae?

Identify the gametes shown in the given figure and select the correct option.

Which of the following algae are used as food supplements by space travellers?

Which is the dominant pigment in Rhodophyceae?

Vedclass Test Series

Exam Paper Generator

Online Exam Module