Haustorial behavior of embryo sac, Biology

Assignment Help:

Haustorial Behavior of Embryo Sac

There are instances in which the entire embryo sac may grow beyond the ovular tissue. The central cell may also form multicellular projections from micropylar and chalazal ends which may penetrate into the carpellary tissues and function as haustoria. In the family Loranthaceae which is characterized by semi-parasitic plants, the embryo sacs are usually highly elongated in one plant of this family. Moquiniella rubra the tip of the embryo sac has been observed to enter the style, touch the stigma and even grow down downwards. The maximum length of such embryo sacs is about 48 mm.


Related Discussions:- Haustorial behavior of embryo sac

Define symptoms in stomach and mouth of pernicious anaemia, Define symptoms...

Define symptoms in Stomach and Mouth of pernicious anaemia? Stomach: The cells which secrete acid and enzymes are atrophied. The gastric secretions are devoid of acid, pepsin

Define food science as a discipline and modern developments, Define Food Sc...

Define Food Science as a Discipline and Modern Developments? As an undergraduate student you may have taken a course in food science and technology. Do you recall, what did the

Ventricular contraction, The mitral valve has an anterior and a posterior c...

The mitral valve has an anterior and a posterior cusp. The anterior cusp is larger and is attached on the upper right part of the margin of the left AV orifice. The posterior cusp

What is intracardiac repair of tetralogy of fallot, What is Intracardiac Re...

What is Intracardiac Repair of Tetralogy of Fallot ? Technique : The essential steps are: (I) relief of right ventricular outflow obstruction, and (2) closure of ventricular

Define observation for benedict test - carbohydrates, Define Observation fo...

Define Observation for Benedict Test - Carbohydrates? An insoluble reddish brown precipitate of cuprous oxide will be obtained. This is similar to Fehling's test. The reddis

What is h shaped incision and what is its purpose, Q. What is H shaped inci...

Q. What is H shaped incision and what is it's purpose? This type of incision is especially useful for: The anterior maxilla or mandible. Accurately identified implant

Explain meningococcal disease, Meningococcal disease  Meningococcal vac...

Meningococcal disease  Meningococcal vaccine is recommended for adults and children >2 years old who are traveling to areas where epidemics are occurring, or to the "meningitis

Homework, 1) a) Initially, how do skeletal muscles (the type of muscle atta...

1) a) Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? b) write the reaction for this procss (Crp +ADP => Cr + ATP) as a ''coupled'' reaction, id

What do you mean by neuronal repolarization, Q. In chemical terms how is th...

Q. In chemical terms how is the neuronal repolarization achieved? Repolarization is the return of the membrane probable from the action potential (+35 mV) to the resting potent

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