Description of embryonic sac
Give a brief description of the term embryonic sac? Which are the cells that form embryonic sac? And also write down their ploidies?
Expert
The embryonic sac is female gametophyte of the angiosperms. The embryonic sac is composed of three cells which remain next to micropyle, two lateral synergids and central oosphere (egg); one binucleated cell, polar nuclei, is placed in central region; three antipodal cells stay in opposite side to micropyle.
Because all of these cells come by the mitosis from functional megaspore they are haploid.
Membrane: Membrane is any delicate sheet which separates one region from the other blocking or allowing (selectively or wholly) the passage of substances. The skin, for illustration, can be considered a membrane which separates the exterior from the i
Why American crow falcon is kept under the Order Pesseriformes?
Sales Forecasting: It is estimating what a company's future sales are probably to be based on sales records and also market research. The information utilized in them should be disciplined and may contain information on the competition and statistics
Specify the target organs and the target tissues of neurohypophysis?
What are the basic symptoms of TMJ? What are the causes of TMJ?
Do enzymes perform better in acid or basic pH?
Regarding their biological function what is the basic difference between meiosis and mitosis?
What are various illustrations of tissues and organs where mitosis is more common, less frequent or practically not present?
Explain the term first polar body? Differentiate between first polar body and oocyte II?
How are excretory systems of the three major arthropod classes comprised?
18,76,764
1953577 Asked
3,689
Active Tutors
1421377
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!