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.
Anatomy deals with study of internal structure which can be observed with unaided eye after dissection. Anatomy is a branch of biology or medicine which is the consideration of the structure of living things. This is a general term which includes plan
What is the meaning of Perceptual Inputs of the perceptual procedure? Briefly describe it.
How many of similar proteins are made up at similar time by each ribosome in the translation of one mRNA molecule? How consecutive protein productions take place in translation?
Explain, how are process of the inhalation and expiration is carried out?
In metagenesis of Obelia and Aurelia what is the form which generates gametes? What is the form which reproduces asexually?
What is the relationship between concentration gradient and active and passive transport?
State an example of positive feeback of the homeostatic regulation?
State how excretory systems of three main arthropod classes are constituted?
Why we can say that each glucose molecule runs Krebs cycle twice?
DISADVANTAGE OF BIOETHANOL: A) Bioethanol is easily evaporated hence can’t form a stable blend at higher percentages or use it in pure form. B) At high concentration ethan
18,76,764
1936737 Asked
3,689
Active Tutors
1446662
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!