102 unit 1
Pteredophyte - https://easybiologyclass.com/pteridophytes-general-characters-with-power-point-presentation-ppt/ you tube https://youtu.be/VLQc2uayg2A?si=7CR9sgy5JkldqQUP pw - https://youtu.be/eWT91EqRvxc?si=cC6KOgmSlKnAu7 4 . pteridophyta classification in hindi General characteristics of Gymnosperms - https://youtu.be/VExc0928N9Q?si=MS0Tjxq0KHuj_dJT