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

Explain fusion inhibitor, Fusion inhibitor  After HIV binds to the host...

Fusion inhibitor  After HIV binds to the host cell surface, a conformational change occurs in the transmembrane glycoprotein sub- unit (gp41) of the viral envelope, facilitatin

Care of eyes, CAR E OF EYES - 1.       Eyes should be periodically exa...

CAR E OF EYES - 1.       Eyes should be periodically examined in children. 2.       While reading the paper should be held 36 cm. away from eyes and preferable at an angle

Assuming that the two traits assort independent, In holly, serrated leaves ...

In holly, serrated leaves are dominant to smooth-edged leaves, and red berries are dominant to green berries. Two holly plants heterozygous for leaf edge shape and berry color are

Laboratory tests - evaluation of heart failure, Routine blood tests like ha...

Routine blood tests like haemoglobin, creatinine, electrolytes are useful to plan treatment. More recently the blood natriuretic peptide levels have been used to assess heart failu

Define about the population dynamics, Define about the Population Dynamics?...

Define about the Population Dynamics? In this unit, we are going to study about human population who eventually suffer from these problems. Why do we want to study about human

Spermatogenesis - gametogenesis, Spermatogenesis - Gametogenesis The p...

Spermatogenesis - Gametogenesis The procedure of maturation of spermatogonia into sperms starts at puberty (about 14 years) and continues into old age. The spermatogonia that

Extravascular compression, Most of the coronary blood flow to the left vent...

Most of the coronary blood flow to the left ventricular myocardium occurs during diastole. Thus the contracting heart obstructs its own blood supply. The systolic compressive force

Illustrate numerical taxonomy, Q. Illustrate Numerical Taxonomy? Taxono...

Q. Illustrate Numerical Taxonomy? Taxonomy today is, in many dctails, different from what it was a generation ago. The use of computers by taxonomists has established an intere

Explain how a person can be dead, A person is declared to be dead upon the ...

A person is declared to be dead upon the irreversible cessation of spontaneous body functions; brain activity, or blood circulation and respiration. However, only about 1% of a per

Explain process of rice milling, Rice milling Rice milling involves the...

Rice milling Rice milling involves the following processing steps: rough rice (paddy rice) → hull removal  →  brown rice  → polishing to remove the bran coats (fruits and seed

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