Caruncle - seed appendages, Biology

Assignment Help:

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.


Related Discussions:- Caruncle - seed appendages

Mechanism of regeneration, MECHANISM OF REGENERATION - T.H. morgan reco...

MECHANISM OF REGENERATION - T.H. morgan recognised 2 primary mechanisms - M o r ph o l axis Epim orphosis 1. Production of enti

Concentration gradient and passive and active transport, Q. What is the rel...

Q. What is the relationship between concentration gradient and passive and active transport? Passive transport is the movement of substances across membranes in favour of their

Lead, Le a d It is common cause of poisoning in cattle. Lead poisonin...

Le a d It is common cause of poisoning in cattle. Lead poisoning in other species is limited by reduced accessibility, more selective eating habits, or lower susceptibility.

What chemical is used to test for the presence of co2, What chemical is no...

What chemical is normally used to test for the presence of carbon dioxide? What is the result of the test if carbon dioxide is present?   a) Lime water is used t

Proteins - digestion process, Proteins are very essential macromolecules as...

Proteins are very essential macromolecules as they have a range of many important functions like: • Required for building and repair of body tissues (including muscle) • Enzy

Sympatric speciation, Sympatric speciation can be regarded as speciation wh...

Sympatric speciation can be regarded as speciation where parent species gives rise to a daughter species without the individuals of a species being separated by space or territory.

., what is the skeleton in the different classes of coelentrata known

what is the skeleton in the different classes of coelentrata known

Microorganisms acquired during transport of raw food, Microorganisms Acquir...

Microorganisms Acquired During Transport, Handling and Processing of Raw Foods Microorganisms can come from truck, tanker, food handlers and equipment and utensils used in the

Explain some food applications of pectin, Explain Some food applications of...

Explain Some food applications of pectin As with other viscous polyanions such as carrageenan, pectin may be protective towards milk casein colloids, enhancing the properties (

Definition of osmosis, Definition of osmosis A) The best explanation of...

Definition of osmosis A) The best explanation of osmosis is 'The movement of water from a dilute solution to a    concentrated solution across a partially permeable membrane'.

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