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

Stage of meiosis, briefly describe the eggs and follicles, in rabbit

briefly describe the eggs and follicles, in rabbit

What are the signs of myocardial disease, Q. What are the signs of myocardi...

Q. What are the signs of myocardial disease? One manifestation of congestive cardiac failure is decreased exercise tolerance depending on the level of compensation. This leads

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

Explain the future challenges for neuroscience, Explain the Future challeng...

Explain the Future challenges for Neuroscience? When the analysis of single cells and even networks has progressed very nicely, there still remain many significant questions. A

How can you describe the homeostasis, Q. What is the homeostasis? What are ...

Q. What is the homeostasis? What are the sensors, effectors and controllers of homeostasis? Homeostasis comprises the processes by which the organism maintains extracellular an

What is a biome, What is a biome? A biome is a prevailing ecosystem con...

What is a biome? A biome is a prevailing ecosystem constituted by same biotic and abiotic factors present in one or more regions of the planet.

Cytochemistry of protoplasm, CYTOCHEMISTR Y OF PROTOPLASM - It is ...

CYTOCHEMISTR Y OF PROTOPLASM - It is supper mixture or mixture of mixtures . 3 4 elements present in it. 1 3 elements are universal. e.g. C, H, O, N, P, K, S,

Conduction system - heart, In this unit, you have learnt that heart is a mu...

In this unit, you have learnt that heart is a muscular organ situated in thorax covering with pericardium and consist of four chambers i.e. right atrium, left atrium, right ventric

Illustrate the plant taxonomy, Q. Illustrate the Plant taxonomy? Plant ...

Q. Illustrate the Plant taxonomy? Plant taxonomy has a long history. It gave birth to several phases of botany but remains exciting, interesting and important because there is

Responses of plants to stress-physiology, Responses Of Plants To Stress ...

Responses Of Plants To Stress The internal chemical signals and environmental factors - the external signals which are perceived by special molecules present in the cell. In 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