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

Establishment of suspension cultures, Establishment of Suspension Cultures ...

Establishment of Suspension Cultures A callus crumbles into smaller clumps and single cells in liquid medium by gentle agitation (100-120 rPM) on a shaker. Shaking the cultur

Classification of carbohydrates - degree of polymerization, Define Classifi...

Define Classification of Carbohydrates - Degree of Polymerization? Classification on the basis of Degree of Polymerization (DP) Carbohydrates are classified by their degree

Advantages of pyramid of energy, Advantages of Pyramid of Energy A pyr...

Advantages of Pyramid of Energy A pyramid of energy must be based on determination of the actual amounts of energy that individuals take in, how much they burn up during metab

Sweating - temperature relations in animals, Normal 0 false f...

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

Define the composition of potato dextrose agar, Define the Composition of P...

Define the Composition of Potato Dextrose Agar? This media is used for cultivation of yeasts, fungi and moulds. Potato (Peeled) - 200.0 gm Dextrose - 20.0 gm Agar - 15

Autoregulation of coronary blood flow, The ability to maintain myocardial p...

The ability to maintain myocardial perfusion at constant levels in the face of changing driving presence is termed autoregulation. In normal cases, autoregulation is maintained at

What is packaging, Q. What is packaging? What is packaging? Packaging...

Q. What is packaging? What is packaging? Packaging means a coordinated system of preparation of goods (in this case, foods) for shipment, distribution, storage and

Skin., what are the main functions of basal (Malpighian)layer?

what are the main functions of basal (Malpighian)layer?

Carbomedics valve-types of valves, Carbomedics Valve :  Almost simila...

Carbomedics Valve :  Almost similar to StJude Medical valve, his is a low profile bileaflet valve made of pyrolitic carbon. On echo cardiography four small jets of regurg

Digestive system - salivary glands, SALI V A R Y GLAND - These are ...

SALI V A R Y GLAND - These are compound - Alveolar, tubular glands made up of columnar / cuboidal epithelium. Saliva is manufactured in them. In mammals these are pai

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