AIIMS 2018 Zoology Biology MCQ Question

The correct answer is B) Cancers show metastasis because one of the defining characteristics of cancer is the ability of cancerous cells to spread from their original site to other parts of the body, forming new tumors. This process, known as metastasis, distinguishes malignant tumors (cancers) from benign tumors, which do not invade other tissues or spread. In contrast, option A is incorrect because not all tumors are cancerous, and option C is misleading as cancerous cells typically lose the property of contact inhibition, allowing them to grow uncontrollably.