Meiosis in $Ulothrix$ takes place during

Which of the following does not have any orders but only $8$ series and many families?

What is common in all the three,$Funaria$,$Dryopteris$,and $Ginkgo$?

Which of the following is a characteristic of Cryptogams?

Which of the following is an incorrect pair?

List some of the plants is given below $:-$
$(i)$ Marchantia $(ii)$ Sphagnum $(iii)$ Pteris $(iv)$ Polytrichum $(v)$ Pinus $(vi)$ Cycas $(vii)$ Castor
In how many above plants do both male and female gametophytes not have an independent free-living existence?