Entomophily - cross-pollination, Biology

Assignment Help:

Entomophily - Cross-pollination

It involves insects to carry the pollen to achieve pollination. Salvia exhibits a specialised 'tumapipe' floral mechanism that signifies classic adaptation for bee pollination. In Salvia the corolla is bilipped and the stamens are attached to corolla tube. Only one-half of each anther is fertile, the other half being sterile joins together to form a sterile plate of tissue placed above the lower lip at the mouth of the flower. However, the fertile part lies under the hood of the upper lip of the corolla.

When a bee visits the flower for nectar it pushes against the sterile plate which consequently brings down the fertile anthers on its back dusting it with pollen. When the bee visits another flower, the forked stigmas picks up the pollen from the back of the insect. Plants that are pollinated by insects often have predominantly yellow or blue petals. Among insects bees and butterflies do not perceive color in the same manner as the humans. They are able to see in the ultraviolet range of the electromagnetic spectrum, an area that is invisible to human eye. They see blue and yellow flowers differently than humans. Red emerges out black to them. Consequently, flowers that are pollinated by insects are not usually red. Many insect-pollinated flowers have dramatic ultra-violet markings, that are invisible to us but direct the insect to the flower, where pollen or nectar may be located. Insects comprise a well developed sense of smell.


Related Discussions:- Entomophily - cross-pollination

Explain factors influencing food production, Explain Factors influencing fo...

Explain Factors influencing food production? Appropriate food production involves getting an adequate output (i.e. food) using appropriate inputs. An essential requisite for th

Under which forms is the trypanosoma cruzi found, Q. Under which forms is t...

Q. Under which forms is the Trypanosoma cruzi found in its hosts? In the definitive hosts also as in triatomine bugs (intermediate hosts) the protozoan that causes Chagas' dise

Define advantages of membrane filtration technique, Define Advantages of me...

Define Advantages of membrane filtration technique? (i) Both total and viable counts can be obtained. (ii) Specific microorganisms can be selected by using special media.

Intermediary metabolism, High Energy Compounds Primary need of the animal b...

High Energy Compounds Primary need of the animal body from the nutrients is energy. Free energy is the term used to denote the energy available to do useful work. Anabolic or synth

Why is the important when blood is flowing, Where are the openings into the...

Where are the openings into the coronary arteries? Why is this important when blood is flowing?

Determine the physiological effects phytoestrogens, Determine the Physiolog...

Determine the Physiological Effects phytoestrogens? Little is known about the biologic and physiologic effect of phytoestrogens in humans. Animal studies suggest the following

What is cardio vasular examination in hheart disease, What is cardio vasula...

What is cardio vasular examination in hheart disease? Cardio-vascular examination: A thorough and systematically cardio-vascular examination provides valuable clues to the pr

Pre-operative nursing management of cardiac surgical patient, PRE-OPERATIVE...

PRE-OPERATIVE NURSING MANAGEMENT OF CARDIAC SURGICAL PATIENTS Cardiac surgical patients generally get investigated thoroughly before getting referred to the surgeons. Many of

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd