We might have taken the case of insects visiting flowers for the sake of collecting pollen instead of nectar; and as pollen is formed for the sole object of fertilisation, its destruction appears a simple loss to the plant; yet if a little pollen were carried, at first occasionally and then habitually, by the pollen-devouring insects from flower to flower, and a cross thus effected, although nine-tenths of the pollen were destroyed, it might still be a great gain to the plant; and those individuals which produced more and more pollen, and had larger and larger anthers, would be selected.
Some holly-trees bear only male flowers, which have four stamens producing rather a small quantity of pollen, and a rudimentary pistil; other holly-trees bear only female flowers; these have a full-sized pistil, and four stamens with shrivelled anthers, in which not a grain of pollen can be detected.
characteristic now observed in Alcantarea may contribute to understanding the phylogeny of the group, as well as its pollination biology.
soldier was seriously hurt and two more received minor injuries.
Smith fighter, welter David Keir, will challenge for the British Masters title on February 20.
The majority of the species of the subtribe, comprised of the genera Cassia, Senna and Chamaecrista, show poricidal anther
dehiscence that implies buzz-pollination mediated by large bees.
Yet, variation has been observed for spikelet opening and anther
extrusion at anthesis (Virmani and Athwal, 1973: Ceccarelli, 1978: Doll, 1987: Hammer, 1984: Gupta et al.
NABLUS, March 10, 2018 (WAFA) -- A Palestinian young man was shot dead and anther
one injured during clashes with Israeli forces in the village of Urif, to the south of Nablus in the West Bank, on Saturday evening, according to local sources and the Ministry of Health.
Using the magnifying glass and special microscope, visitors will see the pollen grains, anther
and stigma of flowers "up, close and personal".
To an anther
question he said Provincial Sports Departments are responsible to promote sports in their respective provinces by facilitating sports Associations and sports clubs in their respective Provinces and regions.
Seven civilians were killed in an airstrike which targeted a car on the main road of Aiash area in Munabah border district, and anther
one was killed in an air raid on a bulldozer in Yasnam area of Baqem destrict.
question, he said that 4125 fruit plants had been planted in Sector G-5 and Sector G-6, Islamabad since June, 2013 up to August, 2017.