As I've explained before, we don't write a conclusion for task 1, we write an overview. You can put this at the end of your essay, but I prefer to put it straight after the introduction. Let's return to last week's life cycle question.
Example introduction and overview:
The diagram illustrates the various stages in the life of a honey bee. We can see that the complete life cycle lasts between 34 and 36 days. It is also noticeable that there are five main stages in the development of the honey bee, from egg to mature adult insect.
Note: I often separate the introduction and overview, but in this case I've put them together in the same paragraph. Both ways are fine.