Tumour which shows origin from more than one germ layers is known as________________? A. Teratoma B. Plemorphic tumours C. Choristoma D. Hamartoma

Immune response to tumour is mediated by_______________? A. Cytotoxic T – lymphocytes B. Natural killer cells C. Humoral mechanismD. All of the above

Tumour arising from secetory and glandular epithelium are__________________? A. Adenomas B. Adenosarcomas C. AngiomasD. Both A and B

Nevus cell are_______________? A. Modified melanocytes B. Cells containing excessive melanin pigment C. Melangocytes which are functionally more active D. large melanocytes

Anaplasia is_______________? A. Lack of functional differentiation B. Lack of structural differentiation C. Is a characteristic feature of malignancyD. All of the above

The predisposing factor for squamous cell carcinoma __________________? A. Solar keratosis B. Chronic ulcers C. LeukoplakiaD. All of the above

Rodent ulcer is most commonly seen on________________? A. Face below alatragus lineB. Face above alatragus line C. Anywhere on hairless skin D. All of the above

Most tumours are ___________________? A. Biclonal in originB. Monoclonal in origin C. Multiclonal in origin D. None of the above

Carcinogens induce tumours, they are________________? A. Chemicals B. Radiation C. VirusesD. All of the above

Increased proliferation of cells is called_______________? A. Hypertrophy B. AtrophyC. Hyperplasia D. Metaplasia