Wigs and hairs - seed appendages, Biology

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.

 

Posted Date: 1/23/2013 8:15:08 AM | Location : United States







Related Discussions:- Wigs and hairs - seed appendages, Assignment Help, Ask Question on Wigs and hairs - seed appendages, Get Answer, Expert's Help, Wigs and hairs - seed appendages Discussions

Write discussion on Wigs and hairs - seed appendages
Your posts are moderated
Related Questions
What is Implant Failure Implant Failure : The total failure of implant to fulfil its purpose which are49 Surgical Complications, Long Term Implant Failures and Ma

Explain Angio-edema Angio-edema:  Swelling of the mucous membranes, tissues beneath the skin or an internal organ because of an allergic reaction.

What are the hormones produced by the testicles and the ovaries? The testicles make androgenic hormones, the major of them being testosterone. The ovaries make estrogen and pro

Sunshine recorder Sunshine recorder (Figure shown below) measures the duration of sunshine. The recorder consists essentially of a glass sphere of about 10 cm in diameter mount

Define the interaction of vitamin c with iron and cadmium? Toxic levels of dietary cadmium (5-200 ppm) interfere with iron absorption and produces iron deficiency. Supplements

Define Factors that affect the requirement of Protein? Protein requirement is greatly influenced by many factors such as age, environmental temperature, energy intake, gender,

which enzymes are required for digestion in cockroach?

Explain Oxidative phosphorylation Oxidative phosphorylation  : Synthesis of ATP  from ADP  and  Pi  during the passage of electrons in the respiratory chain.

draw a well labled diagram of plasmotomy

Contagious ecthyma The contagious ecthyma virus is immunologically distinct from vaccinia, but similar  to the causative agent of pseudo-cow-pox. It belongs to the genus Parapoxvi