Presence of lipids and proteins as phospholipids provide flexibility plasma membrane. This helps cell in engulfing food and other materials from external environment.

Plasma membrane or cell membrane is the outermost covering of the cell that separates the content of the cell from its external environment.

Class 9th Science Session 2022-23 Class 9 Science Terminal Exams MCQ Solutions Class IX Science MCQ Extra Questions Answers 9th Science Terminal Exam Based MCQ Extra Questions

Purkinje is 1839 coined the term ‘protoplasm’ for the fluid substance of the cell.

Cells of intercalary meristems are very active, they have dense cytoplasm, thin cellulose walls and prominent nuclei. They lack vacuoles.