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

Symptoms and signs of diabetes mellitus, Symptoms refer to the problems exp...

Symptoms refer to the problems expressed by the patients. Signs are obtained by a health professional from the patients by interacting with him, by conducting tests, etc. The sympt

What proportion of the progeny, A fish of genotype a/a; B/b is crossed to a...

A fish of genotype a/a; B/b is crossed to a fish whose genotype is A/a; B/b. What proportion of the progeny will be heterozygous for at least one of the genes? (Assume independent

What is the cell division process, What is the cell division process direct...

What is the cell division process directly related to the embryonic growth? The embryonic growth depends directly on mitosis. By this type of cell division the zygote separates

Embryonic stem cells (es), E mb ryonic stem cells (ES): These a...

E mb ryonic stem cells (ES): These are pleuripotent cells of early embryo (blastocyst) capable of giving rise to all differentiated cells, including germ line cells. Em

Explain false left ventricular aneurysm, Explain False Left Ventricular Ane...

Explain False Left Ventricular Aneurysm? False Left Ventricular Aneurysm :  False aneurysm develops after acute rupture of an infarct. It is usually fatal, but a few survive

Nervous system and types of reproduction, Q Annelid Identity card. How are ...

Q Annelid Identity card. How are they characterized according to examples of representing beings, type of symmetry, basic morphology, germ layers and coelom, respiratory system, di

Analyze the chromosomes of her daughters or of her sons, Is it more indicat...

Is it more indicated for a geneticist desiring to map the X chromosome of the mother of a given family (the researcher does not have access to her DNA, only access to the genetic m

Light stratification - lake ecosystem, Light Stratification - Lake Ecosyste...

Light Stratification - Lake Ecosystem The penetration of light in water bodies is limited depending on the transparency of water and its ability to absorb light. On the basis

Why are transgenics considered a threat, Why are transgenics considered a t...

Why are transgenics considered a threat to the environmental safety? Transgenics can be dangerous to the entire biosphere as the transfer of genes among species may have immed

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