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

What do the major organs of the digestive system do, What do the major orga...

What do the major organs of the digestive system do? They are salivary glands, teeth, tongue, gums, esophagus, stomach, small intestine, large intestine, pancreas, liver, and g

Mouse bioassay and mongoose bioassay, Question: (i) Which species of m...

Question: (i) Which species of microalgae are associated with ciguatera fish poisoning? (ii) Name five fish species generally implicated in ciguatera fish poisoning in Mau

Zoology, main external morphological feature that differentiates platyhelmi...

main external morphological feature that differentiates platyhelminthes from nematodes

How a sample contaiinng this isotope decay, Please help with the following:...

Please help with the following: 32P is an unstable isotope of phosphorus that has a half-life of 14.29 days. Atoms of this isotope undergo beta decay in which a neutron decays i

Define factors that lead to vitamin k deficiency, Define Factors that Lead ...

Define Factors that Lead to Vitamin K Deficiency? The factors that lead to vitamin K deficiency include: 1) Marginal dietary intake if one undergoes trauma and extensive sur

Acid rain, What direct or indirect effect is acid rain thought to have on m...

What direct or indirect effect is acid rain thought to have on mama''s and forest and buildings

Failure mode - lack of osseointegration, Lack of Osseointegration (Indicate...

Lack of Osseointegration (Indicated as Mobility)  Loss of osseointegration can occur during the early stages of treatment because of the inability of the woven bone to interfac

Define the effect of wernicke korsakoff syndrome, Define the Effect of Wern...

Define the Effect of Wernicke korsakoff syndrome? Besides occurring in infants, beriberi also occurs in adults with high carbohydrate intakes (mainly from milled rice) and with

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