Endosperm with micropylar haustorium, Biology

Assignment Help:

Endosperm with micropylar Haustorium

A very prominent and aggressive micropylar haustorium is seen in Impatiens. Here the division of the primary endosperm nucleus is followed by a transverse wall, to form an upper smaller chamber and a larger lower chamber. The terminal/distal part of the upper chamber develops into an extensive, much branched haustorium. Its branches extend deep into the funiculus and derive nutrition. Micropylar haustoria are present in many other plants such as Nemophila and Hydrocera.

1127_Endosperm with micropylar Haustorium.png

Figure: LS. Upper part of ovule of impatiens showing endosperm with micropylar haustorium; note the penetration of branches of the haustorium into tissue of funiculus.


Related Discussions:- Endosperm with micropylar haustorium

Explain the bioavailability of nicotinic acid, Explain the Bioavailability ...

Explain the Bioavailability of Nicotinic Acid? We have already learnt earlier that niacin is provided in the diet primarily as the pyridine nucleotides-NAD and NADP. In additio

Shivering - heat production, Shivering - Heat Production The mechanis...

Shivering - Heat Production The mechanism of thermogenesis with which we are more familiar is shivering and all adult birds and mammals seem to use these mechanism. Shivering

Most abundant form under which nitrogen is found in nature, Q. What is the ...

Q. What is the most abundant form under which nitrogen is found in nature? The major abundant nitrogen-containing molecule found in nature is molecular nitrogen (N2). The air i

What is choanoflagellate. explain in brief., What is Choanoflagellate? Expl...

What is Choanoflagellate? Explain in brief. The protozoans which resemble the choanocyte cells found in sponges. They have a collar of microvilli which surround a central flage

Explain calvin cycle, Calvin cycle (the aka Calvin-Benson Cycle or the Car...

Calvin cycle (the aka Calvin-Benson Cycle or the Carbon Fixation) is the series of biochemical, enzyme-mediated reactions during which the atmospheric carbon dioxide is reduced an

What is r - wave amplitude, Q. What is R - Wave Amplitude? The R-wave a...

Q. What is R - Wave Amplitude? The R-wave amplitude in the lateral precordial leads usually decreases more in normal than in abnormal subjects and correlates with left ventr

Explain the estimated average intake (ear), Explain The Estimated Average I...

Explain The Estimated Average Intake (EAR)? Considering that the nutrient requirements follow a normal distribution, the EAR is defined as 'the median usual intake that meets t

Explain relative quantitative difference of protein taxonomy, Explain Relat...

Explain Relative Quantitative difference of Protein Taxonomy This analysis involves the study between the amounts of different proteins and more significantly, of different con

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