Moss peristome takes part in
spore dispersal
photosynthesis
protection
absorption.
A well developed archegonium with neck consisting of 4-6 rows and neck canal cells, characterises
gymnosperms and flowering plants
pteridophytes and gymnosperms
gymnosperms only
bryophytes and pteridophytes
In ferns, meiosis takes place at the time of
spore formation
spore germination
gamete formation
antheridia and archegonia formation.
Turpentine is available from
angiospermous wood
bryophytes
gymnospermous wood
ferns.
In bryophytes
both generations are independent
gametophytes are dependent upon sporophytes
sporophytes complete their life cycle
sporophytes are dependent upon gametophytes
. Many blue-green algae occur in thermal springs(hot water springs) .The temperature tolerance of these algae have been attributed to their
mitochondrial structure
importance of homopolar bonds in their proteins
cell wall structure
modern cell organization
In a moss, the sporophyte
manufactures food for itself, as well as for the gametophyte
is partially parasitic on the gametophyte
produces gametes that give rise to the gametophyte
arises from a spore produced from the gametophyte
Which one of the following statements about Cycas is incorrect?
it has circinate vernation
its xylem is mainly composed of xylem vessel
its roots contain some blue-green algae
it does not have a well organized female flower.
In which of the following would you place the plants having vascular tissue lacking seeds?
pteridophytes
gymnosperms
algae
In Pinus/gymnosperms, the haploid structure are
megaspore, endosperm and embryo
megaspore, pollen grain and endosperm
megaspore, integument and root
pollen grain, leaf and root
