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

Are plant growth is depend on the plant harmones, Are the growth and develo...

Are the growth and development of plants only influenced by plant hormones? Chemical and Physical environmental factors, like position and intensity of light in relation to the

Succession, Similarities between autotrophic succession and heterotrophic s...

Similarities between autotrophic succession and heterotrophic succession

State the the amount of the nutrient, State the the amount of the nutrient ...

State the the amount of the nutrient On increasing the amount of the nutrient the yield increases and the decrease from the maximum i.e., (A-y) becomes less. Subsequent additio

Lung biopsy, Lung Biopsy: As with pleural biopsy,  lung biopsy may  be  d...

Lung Biopsy: As with pleural biopsy,  lung biopsy may  be  done by  surgical exposure of the lung (open lung biopsy) with or without endoscopy using a needle designed to remove a

What is the resting membrane voltage of the neuron, What is the resting mem...

What is the resting membrane voltage of the neuron A complete motor neuron is removed from a frog and placed in normal physiological saline at 1 AM.  The neuron is healthy.  At

Respirator pigments and breathing, RESPIR A T O R Y PIGMENTS - R...

RESPIR A T O R Y PIGMENTS - Resp. pig. is generally Hb (Fe is attached to globine by chellate bond). In Earthworm Erythroqruorine present. Haemocyanine (Cu) genera

Ultrasonic removal of gutta percha, Ultrasonic removal of Gutta percha: ...

Ultrasonic removal of Gutta percha: -the piezoelestic ultrasonic system. - As the instruments is energized; producing heat to themosoften gutta-percha. - Float gutta-perc

Percentage ratio of ash in honey, Q. Percentage ratio of ash in honey? ...

Q. Percentage ratio of ash in honey? Standards allow ash content in honey up to 0.5 per cent, but the ash of genuine honey seldom exceeds 0.35 per cent. It is determined by cha

Emergency treatment of diarrhoea, Q. Emergency treatment of diarrhoea? ...

Q. Emergency treatment of diarrhoea? Emergency treatment and drug treatment: Severe dehydration is fatal and requires intravenous fluids and hence hospitalization. You have re

Find the magnitude and the direction of his initial velocity, After leaving...

After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 66.2 m horizontally from the end of the ramp. His velocity, just before landing, is 18

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