Who among the following was a paleobotanist?

The movement of sperms towards the archegonial necks in response to chemical substances released by the archegonia is known as:

In which of the following plant groups does the gametophyte remain attached to the sporophyte?

Which plant exhibits a haplodiplontic life cycle?

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?

In bryophytes and pteridophytes,$.......$ is required for the transport of male gametes.