Caruncle - seed appendages, Biology

Caruncle - Seed Appendages

This is a white, collar-like structure borne on the micropylar end of the seed in many members of the Euphorbiaceae, such as castor, Ricinus communis. The soft outgrowth capping the hard seed is formed by proliferation of the cells at the tip of the outer integument. It is rich in starch and sugars. The violent opening of the fruit (this is termed gun-shot mechanism) causes seeds to be thrown away a few feet. It is believed that ants consume the caruncle and in the process carry the seed further away. The caruncle is also considered to be hygroscopic and it may be helpful in absorbing moisture for seed germination.

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







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

Write discussion on Caruncle - seed appendages
Your posts are moderated
Related Questions
Q. What is an open circulatory system? Open circulatory system is the one in which blood doesn't circulate only inside blood vessels but it also falls in cavities that irrigate

Define the Nutritional assessment methods? Nutritional assessment methods commonly used are enumerated herewith. 1. Bodyweight measurement s remain to be the most practical

Dextrorotatory:- When  an  optically .active substance rotates  the plane of polarized light in a clockwise direction.

State about the Latent squint disease Latent squint is seen commonly as exophoria in infancy and presbyopic age and esophoria in childhood. Hypermetropes can have esophoria and

Which of the following best defines the reason why DNA ligase is needed to complete the replication of internal chromosomal segments? A. DNA ligase is able to delete the last n

STOMACH It is wide, J-shaped, placed obliquely on left side in upper abdominal cavity so left kidney is slightly down ward. It is 30 cm, long and 15 cm. wide. It has g

Cells are classified into eukaryotic or prokaryotic. Prokaryotic cell is that with no a delimited nucleus. Eukaryotic cells are those with nucleus delimited by membrane.

Define Key Concepts and Facts on Properties of Monosaccharides? 1. All monosaccharides are soluble in water. 2. All monosaccharides give Molisch's test. 3. Monosaccharides do n

Triacylglycerols  which is also  known as  triglycerides or fats  consist  of  three  fatty  acid chains  esterified  to  a  glycerol  backbone.  Simple  triacylglycerols   have  t

Functionality of implant material It should take maximum advantage of available bone and permit the maximum amount of forces to be transmitted through the implant within physio