True, Rudolf Virchow modified the cell theory in 1855. He gave the postulelate, “Omnis cellula-e-cellula”, which means, a new cell arise from pre-existing cells.

In the year 1670, Dutch biologist Anton van Leeuwenhoek discovered the living cell when he looked at pond water under a microscope, which is made up of lenses.

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

Depending on the region where the meristematic tissues is present, they are classified as apical, lateral and intercalary.

Lateral meristematic tissues, creates when girth of the steam increases. This increase in the diameter and girth of the plant and is called secondary growth. The apical Meristem is situated at the growing tips of stems, root and also at ...