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Gymnosperms are also called soft wood spermatophytes because they lack :
Cycas and Adiantum resemble each other in having:
Cycas (a gymnosperm) and Adiantum known as Maidenhair fern is apteridophyte resemble each other in havingmotile sperm. Seeds, cambium are common in gymno-sperms and absent in pteridophytes. True vessels are absent in both pteridophytes and gymnospems.
In angiosperms, functional megaspore develops into
Male and female gametophytes are independent and free-living in:
Sphagnumis a bryophyte in which male and female gametophytes are independent and free living.
Which one of the following plants is monoecious?
Pinusplant is monoecious i.e. both male and female cones are present in same plant but on different branches.
In which one of the following, male and female gametophytes do not have free living independent existence?
Male and female gametophytes of Cedrusdo not have free living independent existence. Cedrus belongs to conifer.
Spore dissemination in some liverworts is aided by
Elater is an elongated, spirally thickened,water-attracting cell in the capsule of a liverwort, derived from sporogenous tissue and assist in spore dispersal.
In a moss the sporophyte
In moss main plant body is gametophyte & sporophyte is meant for spore dispersal mainly. Hence it is called that the sporophyte is partially parasitic on gametophyte
Angiosperms and gymnosperms resemble in having
Fertilization occurs by siphonogamy. The male gametes are carried to the archegonia through pollen tube.
Vessels and companion cells are characteristics of