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

Determine the use of water soluble vitamin A, Water soluble Vitamin A  ...

Water soluble Vitamin A  Water soluble vitamin A is a yellowish green, slightly turbid, fluorescent liquid of faint characteristic odour. The taste is at first faintly sweet an

Pollen tube structure, Pollen Tube Structure The pollen tube in the s...

Pollen Tube Structure The pollen tube in the stigma is filled with cytoplasm containing numerous mitochondria and dictyosomes. The number of dictyosome cisternae is reduced i

Horse diseases-epidemiology, Epidemiology Infection is transmitted   b...

Epidemiology Infection is transmitted   by direct contact between infected domestic and wild animals and susceptible livestock; by arthropod vector (Phlebotomus, Aedes and Cul

Molecules that make possible active transport, Which are the molecules that...

Which are the molecules that make possible active transport through membranes? Ans) Active transport is made by particular membrane proteins. These proteins are known as "pumps"

Bacteria anerobic respiration, how does the bacteria clostrium tetani respi...

how does the bacteria clostrium tetani respire anerobically

In what ways does poverty lead to environmental degradation, Question 1: ...

Question 1: (a) In what ways does poverty lead to environmental degradation? (b) What types of problems do the rural and urban poor share? Give some differences in the condi

What is a provirus, It is the DNA representing, the genome of virus that ha...

It is the DNA representing, the genome of virus that has been included into the DNA of the host.

Explain some side effects of carbohydrate loading, Explain some side effect...

Explain some side effects of carbohydrate loading? Some potential side effects of carbohydrate loading are: Muscle , stiffness Diarrhoea Chest Pain Depres

1408 final exam Eastfield University, I need the Answers for the final exam...

I need the Answers for the final exam for biology it''s a one hundred question test if you can help i would appreciate it

What are the symptoms of pectic ulcer, Q. What are the Symptoms of pectic u...

Q. What are the Symptoms of pectic ulcer? Increased gastric tone and painful hunger contraction when stomach is empty. Hunger contraction 1-3 hours after meals is the main com

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