Which of the following pairs of families possess pollinia?

Which one of the following statements is not true?

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

Which of the following plants produces both chasmogamous and cleistogamous flowers?

$Statement\; 1$: Zygote is a single cell.
$Statement\; 2$: Two haploid cells fuse to form two diploid cells.

Rose plants produce large,attractive bisexual flowers but they seldom produce fruits. On the other hand,a tomato plant produces plenty of fruits though they have small flowers. Analyze the reasons for the failure of fruit formation in rose.