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

Biochemical changes - consequences of aging, Biochemical Changes - Conseque...

Biochemical Changes - Consequences of Aging Several biochemical changes are correlated with aging. Detailed biochemical studies in rats have been carried out by Prof. M.S. Kan

Respiration, different type of respiration in animals

different type of respiration in animals

Why in the preparation of a karyotype analysis, Why in the preparation of a...

Why in the preparation of a karyotype analysis is the use of a substance like colchicine interesting? The Colchicine is a substance that disallows the formation of microtubules

Explain the indole production test, Explain the Indole Production Test? ...

Explain the Indole Production Test? Many microorganisms produce an enzyme tryptophanase which oxidizes amino acid tryptophan to produce pyruvic acid, indole and ammonia. We can

Meosis, briefly describe eggs and follicles

briefly describe eggs and follicles

What factor below contributed to the current variations, According to the t...

According to the theory of natural selection, what factor below contributed to the current variations in beak sizes of finch species on the Galapagos islands? a. Finches dispersed

What are the four groups of protozoans, What are the four groups of protozo...

What are the four groups of protozoans? The four major groups of protozoans are the sarcodines (that form pseudopods, like amoebae), the mastigophores (flagellated, such as the

Can you illustrate period of meiosis, Q. What is the crossing over? And In ...

Q. What is the crossing over? And In which period of meiosis does this event occur? Crossing over is the eventual exchange of chromosomal fragments among homologous chromosomes

Pollution - environmental pollution, Pollution - Environmental Pollution ...

Pollution - Environmental Pollution Pollution refers to any undesirable change in the physical, chemical or biological characteristics of our environment, i.e. air, water and

Define institutional and cultural barriers - infuse biology, Define Institu...

Define Institutional and Cultural Barriers - Infuse Biology? Inside the university, the departmental promotion and tenure committees understand well the value of contribution t

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