Development of endosperm, Biology

Assignment Help:

Development of Endosperm

In a fertilized embryo sac, the primary endosperm nucleus is generally observed below the zygote. It divides, and further divisions of its products give rise to an endosperm. The nutritive role of endosperm has long been recognized. It nurses the embryo from the proembryo stage until it becomes self-sufficient, and completes its development. The endosperm tissue is the source of growth regulator such as gibberellins and cytokinins. Coconut water and sometimes the extract of corn endosperm, at the milk stage are added to the nutrient media of tissue cultures to stimulate growth. The developing endosperm derives nutrients from the food reserves stored in nucleus and integuments. In several families the development of chalazal, micropylar or secondary endosperm haustoria leads to partial or entire absorption of integuments. Based on the mode of development, three main types of endosperms have been recognized in angiosperms:

  • Nuclear
  • Cellular and
  • Helobial

Related Discussions:- Development of endosperm

Energy absorbed by plants, Normal 0 false false false E...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Butter, Ask question #Minimum 100 words role of micro organisms in preparat...

Ask question #Minimum 100 words role of micro organisms in preparation of butter accepted#

Walrasian model, Normal 0 false false false EN-IN X-N...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Explain the work of john ray in animal taxonomy, Explain the Work of John R...

Explain the Work of John Ray in Animal Taxonomy? The first important work on both animal and plants was initiated by John Ray (1627-1705). He followed Aristotle and divided ani

Distinguish among the terms stimulus and sensation, Q. Distinguish among th...

Q. Distinguish among the terms stimulus, sensation, and perception? A stimulus is an energy source (chemical, light wave, pressure etc.) which activates a receptor cell (specia

Explain the treatment of vitamin a deficiency, Explain the Treatment of vit...

Explain the Treatment of vitamin A deficiency? All forms of vitamin A deficiency are treated with a massive oral dose of vitamin A in oil (200,000 IU), immediately after diagno

Effects on aquatic organisms - water pollution, Effects on Aquatic Organism...

Effects on Aquatic Organisms - Water Pollution Toxic water pollutants such as metals, pesticides, insecticides and chemicals affect aquatic species directly whereas the non-t

Define nutritional needs during recovery, Define nutritional needs During R...

Define nutritional needs During Recovery? Here, let us discuss what should be the nutritional goals based on the physiological aspects involved. Goals: The main emphasis mus

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