Which of the following flowers only once in its life-time?

The odd one out is:

$A$ - In plants, the end of the juvenile phase marks the beginning of the reproductive phase.
$R$ - In plants, the juvenile phase is also known as the vegetative phase.

Identify the haploid and diploid structures from the following list:
$I$ - Megaspore mother cell
$II$ - Microspore mother cell
$III$ - Egg cell
$IV$ - Male gamete
$V$ - Synergid
$VI$ - Embryo
$VII$ - Antipodal cell
$VIII$ - Zygote
$IX$ - Megaspore
$X$ - Microspore
Select the correct grouping for Haploid and Diploid structures.

In which of the following organisms does the formation of the zygote $NOT$ occur inside the body?

Is there a relationship between the size of an organism and its life span? Give two examples in support of your answer.