Tag: environmental conservation and biodiversity

Lever mechanism for pollination is characteristic feature of Salvia. The flowers in this genus are arranged in thysrus inflorescence and they are attractive and well adapted for cross pollination through the agency of insects. In this mechanism of pollination, the corolla has a spreading upper lip, which acts as a landing place for the insect. When the insects land on the lower lip of the corolla and in its endeavour to obtain nectar that is secreted by the hypogynous disc, pushes the sterile lobes of the stamen inwards. Due to this the upper half of the connective with the fertile lobes act as a lever. Then the anther lobe comes down and shed the pollen on the back of the insect.

• Blastophaga quadriceps, the legitimate pollinator of Ficus religiosa, possesses two thoracic pockets in which pollen is stored for subsequent introduction into the young figs.  
• Pocket loading takes place in the nearly ripe fig at the male phase. Impregnated female wasps leave the fig via narrow channels bored by the males. 
• Upon entering young receptive figs, the female wasps begin oviposition, during which pocket emptying and pollination takes place.

Pollination by means of water is called as Hydrophily. In Vallisneria, the male flower is detached from the plant and it will float on the water and are bought in the contact of the stigma of the female flower.

Insect visit flowers to get nectar. The attraction of flower in plants is not to diverge the insect from damaging other part, but to bring about pollination (i.e., transfer of pollen to the stigma).

All the flowers are important to plant as they attract pollinators by producing nectar, attracting pollinators and helps to plants in the reproduction process by pollination.

Pollination through insect is called as entamophily in which insect is attracted by nectar secreted by flower and colorful petals.

In Vallisneria, pollination is hydrophilous. Pollination carried out through water is hydrophily. Light and unwettable pollen grains are present in these plants. Pollen grains are surrounded by mucilaginous covering, hence protected from wetting.

Many flowers produce nectar. When an insect lands on a flower to feed, pollen grains stick to its body. As the insect moves to another flower of the same species, these pollen grains are transferred to the flower’s stigma and pollination occurs.