Given below are two statements : Statement I : The class name Reptilia refers to creeping or crawling mode of locomotion. Statement II : All organisms belonging to Reptilia have three chambered heart. In the light of the above statements, choose the most appropriate answer from the options given below :

Step-by-step solution

Statement I is correct because the class name Reptilia is derived from the Latin word 'repere' or 'reptum', which means to creep or crawl, referring to their mode of locomotion. Statement II is incorrect because while most reptiles have a three-chambered heart (two atria and one partially divided ventricle), crocodiles are an exception and possess a four-chambered heart. Therefore, Statement I is correct but Statement II is incorrect. Answer: Statement I is correct but Statement II is incorrect