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Seed bearing plants pollens

Pollen is composed of microspores (male reproductive elements) of seed-bearing plants. Bee pollen refers to pollen collected by bees that is in turn harvested for commercial distribution. [Pg.81]

Cycads pollination by insects may be one of the earliest forms of insect-pollination. Like conifers, cycads bear their reproductive cells in cones rather than flowers. Individual cycad plants are either male or female, male plants having pollen cones and female plants, seed cones. Fertilization requires transfer of pollen grains from pollen cones to seed cones. The role of insects in this process has received attention in a cycad commonly known as the cardboard palm (Zamia furfuracea). This is a handsome horticultural plant with... [Pg.52]

Feeding and breeding in the cone leaves the weevils covered with ripened pollen. As they move in the search for a new male cone to assault, they also come upon female plants bearing seed cones ready for pollination. Although they produce little heat to... [Pg.53]

STAMEN The microsporophyll in seed plants, particularly in die angiosperm that organ that bears the microspores or pollen. [Pg.53]


See other pages where Seed bearing plants pollens is mentioned: [Pg.12]    [Pg.26]    [Pg.27]    [Pg.32]    [Pg.32]    [Pg.46]    [Pg.50]    [Pg.139]    [Pg.61]    [Pg.195]    [Pg.343]    [Pg.7]   
See also in sourсe #XX -- [ Pg.11 ]




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