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

Polyunsaturated fatty acids required for dyslipidemia, Q. Polyunsaturated F...

Q. Polyunsaturated Fatty Acids required for dyslipidemia? These are also liquid at room temperature. There are two main types of dietary PUFA's of significance: a) linol

Animal Respiration, What type of respiration does earthworm has ? In many c...

What type of respiration does earthworm has ? In many complex animals, the cells of internal organs are distant from the outside environment; respiratory systems provide the passag

Human lungs, Human lungs A pair of spongy, elastic and bag like stru...

Human lungs A pair of spongy, elastic and bag like structures of lungs is present in the chest cavity, one on either side of the heart. Lungs are enclosed by a double lay

What are the phenotypic ratios, Honeybees are unusual in that male bees (dr...

Honeybees are unusual in that male bees (drones) have only one copy of each gene, while female bees have two copies of their genes. That is because drones develop from eggs that ha

Draw a graph that concerns a biological subject, Graphs are a way to convey...

Graphs are a way to convey information and trends in a convenient fashion. For this week's Discussion Board you should search the internet for a graph related to biology. Provide u

Grading of stenosis and grading of coronary artery disease, Q. Grading of S...

Q. Grading of Stenosis and Grading of Coronary Artery Disease? Multiple views are necessary to quantify coronary stenosis accurately. Further, there should be no foreshortening

Flying fish pisces, the characteristics of flying fish belong to pisces

the characteristics of flying fish belong to pisces

Difference between ectoparasite and endoparasite, Q. What is the difference...

Q. What is the difference between ectoparasite and endoparasite? The Ectoparasites are parasites that explore the external surface of the host (like, for instance, mites that p

Describe methods of diagnosing chromosome abnormalities, Explain the differ...

Explain the difference between numerical chromosome abnormalities and single gene disorders. Describe methods of diagnosing chromosome abnormalities prenatally and after birth. How

What are the types of digestion, What are the types of digestion and of dig...

What are the types of digestion and of digestive system of platyhelminthes? Flatworms have incomplete digestive systems and they show intracellular and extracellular complement

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