Gymnosperms do not produce fruits because they lack ........

Which of the following tissues is present in the leaves of $Pinus$ to conduct water and food?

In $Pinus$,the approximate time for fertilization after pollination is:

In which plants does pollination occur exclusively through wind?

The wing of the $Pinus$ seed is derived from:

What is correct for conifers?
$I$ - Leaf is like a needle,$II$ - Thick cuticle,$III$ - Thin cuticle,$IV$ - Sunken stomata,$V$ - Stomata absent