Aril - seed appendages, Biology

Aril - Seed Appendages

It is an outgrowth that arises from the funicle or the testa near the raphe and covers the seed partially or completely. It is often referred to as the third integument. It is often fleshy or brightly colored. The edible part of litchi fruit is aril, which envelops the hard brown seed coat. In Myristica fragrans the hard seed (nutmeg of commerce) is covered by a thin, irregular and bright-orange aril (that gives us the precious spice mace). Seeds of Pithecellobium dulce, a leguminous tree, have a fleshy red aril that partially surrounds the seed. In Crossosoma californicum a fimbriate aril covers the seed on the sides.

Cells of the aril contain oils, starch, sugars, pigments and aroma containing compounds. The appendage is mostly an attraction for birds, which consume the aril and scatter the seeds. Seeds of white water lily, Nymphaea Alba have a spongy aril that provides buoyancy for dispersal of seed by water.

Posted Date: 1/23/2013 8:07:54 AM | Location : United States







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

Write discussion on Aril - seed appendages
Your posts are moderated
Related Questions
Explain about the Colour Sense Colour Sense  is  the faculty whereby we are enabled  to  distinguish colours as  excited by  light of  different wave  length. The ability  to a

Determine the uses of Electrical Recording - Brain function We can also learn about brain function by recording its electrical activity. In electroencephalography (EEG) and the

Multiplication Phas - Stages of spermatogenesis The initial cells in the germ line arc known as primordial germ cells (PCC). The PGC, which arise at some distance from the pro

Define the Iodine Test - Carbohydrates? This test is given by polysaccharides and is not given by monosaccharides or disaccharides. Principle Iodine forms a coloured ad

The doctor ordered 3 teaspoons of Basaljel suspension in water or juice. How many cc of Basaljel (aluminum carbonate) should the nurse place in the medicine cup?

Q. Living beings are made of inorganic and organic substances. According to the molecular complexity how can each of those substances be classified? Inorganic substances, mole

What are secondary roots? In origin how secondary roots differentiate from shoots? Secondary roots are ramifications of the primary (major) root. The secondary roots emerge fro


DEFECT S OF HEART 1 .      Blue Baby syndrome (Cyanosis) - Due to persisting foramen ovalis in atrial septum even after birth, the impure blood from right auricles comes to

Explain about the Oesoplzageal Carcinoma? Management of patients with oesophageal carcinoma includes surgery, radiation and combination chemotherapy. Radiation to the lower nec