SPEECH is an EXCLAMATORY sentence reporting verb said is changed into EXCLAIMED.The connector 'that' is used in place of commas. Now we need to convert exclamatory sentence into an assertive sentence ( what a beautiful FLOWER! - It is a very beautiful flower.)Now MAKE changes into it to make indirect speech ( It was a very beautiful flower).Finally, we get - "Meena exclaimed that it was a very beautiful flower."