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
The plant body of moss (Funaria) is
Completely sporophyte
Predominantly gametophyte with sporophyte
Completely gametophyte
Predominantly sporophyte with gametophyte
A student observed an algae with chlorophyll and phycoerythrin. it should belong to
phaeophyta
chlorophyta
rhodophyta
bacillariophyta.
Bryophytes are dependent on water, because
water is essential for their vegetative propagation
the sperm can easily reach upto egg in the archegonium
archegonium has to remain filled with water for fertilization
water is essential for fertilization and for their homosporous nature.
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.
The walking fern is so named because
it propagates vegetatively by its leaf tips
it known how to walk by itself
its spores are able to walk
it is dispersed through the agency of walking animals.
Peat moss is used as a packing material for sending flowers and live plants to distant places because
it serves as a disinfectant
it is easily available
it is hygroscopic
it reduces transpiration
Pinus differs from mango in having
tree habit
green leaves
ovules not enclosed in ovary
wood.
Ectophloic siphonostele is found in
Osmunda and Equiseturn
Marsilea and Botrychium
Adiantum and Cucurbiaceae
Dicksonia and Maidenhair fern.
Which of the following plant kingdom is called ‘amphibians’?
Pteridophyta
Thallophyta
Tracheophyta
Bryophyta
