Wigs and hairs - seed appendages, Biology

Assignment Help:

Wigs and hairs - Seed Appendages

Seeds of certain plants have epidermal outgrowths or the integuments themselves may form folds and projections that present a wing-like appearance. In the tree Oroxylon sp. a thin, transparently white, circular or oval, disc-like wing spreads all around the two-lobed seed. The seed of cucurbit Zanonia macrocarpa has wings measuring up to 10 cm.

In the drumstick plant Moringa oleifera the seed has three equidistant wings. Seed wings provide large surface area, with optimum strength, combined with a minimum of material. A surprisingly large number of winged seeds can be arranged compactly in a fruit. Wings help the seed to propel, sail or spin some distance away when released from the fruit.

 


Related Discussions:- Wigs and hairs - seed appendages

How occlusal load affect osseointegration, Q. How Occlusal load affect osse...

Q. How Occlusal load affect osseointegration? Overloading the recognizing bone tissue prematurely will cause failure of osseointegration. A two stage surgery is advised routine

Do echinoderms present external or internal fecundation, Q. Do echinoderms ...

Q. Do echinoderms present external or internal fecundation? Is there sex division among individuals? The fecundation in echinoderms is external, gametes are liberated in water

Introduction of formation of soil, FORMATION OF SOIL Evolution of Eart...

FORMATION OF SOIL Evolution of Earth took place five to eight billion years ago when it was a red hot magma (molten rock). It took millions of years for the magma to cool down

Hospitalization, Hospitalization Hospitalization is stressful experien...

Hospitalization Hospitalization is stressful experience  for children,  adolescents  and their families.  It is an interruption  of the child's active cycle of growth and deve

Describe ms murmur in diastolic murmurs briefly, Describe MS Murmur in Dias...

Describe MS Murmur in Diastolic Murmurs briefly? Characteristic: Low pitched, rumbling and diastolic murmur, loudest at apex with patient in left lateral decubitus, with pre

What is the neuromuscular synapse, Q. What is the neuromuscular synapse? ...

Q. What is the neuromuscular synapse? Neuromuscular synapse is the structure through which the neural impulse passes from the axon of a motor neuron to the muscle cell. This st

Describe the benefits of neuropsychological test, Describe the benefits of ...

Describe the benefits of Neuropsychological test The tests can be helpful in the assessment of: Change in mental status Abnormalities in function before abnormalitie

Describe the complete transposition of great arteries, Describe the Complet...

Describe the Complete transposition of great arteries ? Lethal, relatively frequent malformation. Without treatment, it results in 30 per cent mortality within the first week o

Reproduction, What is the difference between asexual and sexual reproductio...

What is the difference between asexual and sexual reproduction

Contractile vacuoles of amoeba, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

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