Q. Which of the following statement is correct :
(a) Malignant tumours may exhibits metastasis.
(b) Patients who have undergone surgery are given cannabinoids to relieve pain.
(c) Benign tumours show the property of metastasis.
(d) Heroin accelerates body function.
Solution : Correct option : A Metastasis is a cancerous spread from an initial or primary site to a different or secondary site within the host’s body. It is typically seen in case of malignant tumours which undergo rapid cell division. When tumour cells metastasize, the new tumour is called a secondary or a metastatic tumour and its cells are similar to those in the original or a primary tumour. Hence, malignant tumours may exhibit metastasis whereas, benign tumours do not undergo metastasis. So, the correct answer is ‘Malignant tumours may exhibit metastasis’.