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.
Why mitochondria be considered the power plants of aerobic cells?
Write down the significance of indirect ELISA.
How tuberculosis can be prevented?
Give the main morphological features of the arthropods? Answer: Arthropods give three distinguishing features: they are metameric beings (that is, segmented body), t
Describe heterophagic intracellular digestion? How is this procedure accomplished?
What is markownikoff’s rule?
What occurs to the TSH (or thyroid-stimulating hormone) blood level in the hypothyroidism? Why is there enlargement of thyroid in the endemic goiter disease?
What are some illustrations of beings of the phylum Arthropoda which present a much high level of behavioral sophistication?
Specify the major divisions and representing species of the gymnosperms?
Can the heat capacity of water be thought big or small? Write the biological importance of that characteristic?
18,76,764
1953893 Asked
3,689
Active Tutors
1449267
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!