Gymnosperms originated in

In $Pinus$ seeds,there are:

Each plant or group of plants has some phylogenetic significance in relation to evolution. $Cycas$,one of the few living members of gymnosperms,is called the 'relic of the past'. Can you establish a phylogenetic relationship of $Cycas$ with any other group of plants that justifies the above statement?

Canada balsam is an oleoresin obtained from

Which of the following is considered a living fossil?

Plants which can photosynthesize at as low temperatures (up to $-35^o C$) are: