Can you explain embryonic sac, Biology

Assignment Help:

Q. What is embryonic sac? Which are the cells that form the embryonic sac? What are their ploidies?

The embryonic sac is female gametophyte of angiosperms.

The embryonic sac is collected of three cells that remain next to the micropyle, two lateral synergids and the central oosphere (egg); one binucleated cell, the polar nuclei, is placed in the central region; three antipodal cells stay in the opposite side to the micropyle. Ever since all these cells come by mitosis from the functional megaspore they are haploid (n).


Related Discussions:- Can you explain embryonic sac

What concerns should alek''s healthcare team, Nine-year-old Alek is admitte...

Nine-year-old Alek is admitted to the emergency room with a closed fracture of the right femur. Radiography revels that the fracture crosses the distal epiphyseal plate. What conce

Explain about iceberg phenomenon, Q. Explain about Iceberg Phenomenon? ...

Q. Explain about Iceberg Phenomenon? Phenomenon means a fact or occurrence that appears. Let us see how iceberg phenomenon is applied to Diabetes Mellitus (DM). Cases of dia

Prophase, Prophase This is the first and longest phase of mitosis .At i...

Prophase This is the first and longest phase of mitosis .At its beginning  all  10 nm segments   of chromatids (= chromonemata)  of the  duplicated  chromatin fibres of interph

Explain oxidation-reduction potential, Oxidation-reduction  Potential (ORP)...

Oxidation-reduction  Potential (ORP) ORP is related to the concentration of oxidizers or reducers in a solution, and their activity or strength. It provides an indication of th

What do you understand by myoglobin, Q. What is myoglobin? What is the func...

Q. What is myoglobin? What is the function of this molecule in the muscle tissue? Myoglobin is a present in muscle pigment and fibers similar to hemoglobin. Myoglobin has a gre

Extraembryonic membranes the same in all vertebrates, Are the extraembryoni...

Are the extraembryonic membranes the same in all vertebrates? The presence of each extraembryonic membrane varies according to the vertebrate class. In fishes and amphibians

Define about the glutathione peroxidases - selenium, Define about the Gluta...

Define about the Glutathione peroxidases - Selenium? The role of selenium in the cytosolic enzyme, glutathione peroxidase (GSHPx), was first illustrated in 1973. Four selenium

Shell - body form protozoans, Shell - body form Protozoans Majority of...

Shell - body form Protozoans Majority of protozoans posses an exoskeleton in the form of a shell, also called test. The shell forms a loose covering around the body of the ani

Science as a human endeavour, Science as a human endeavour: Science is...

Science as a human endeavour: Science is a human endeavour. Human beings, from prehistoric times, attempted to control nature for their own welfare. For this, they had to ob

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