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.
State how excretory systems of three main arthropod classes are constituted?
1. It helps to serve customers well as companies know about them enough if they manage the knowledge efficiently. 2. It reduces the cycle time of business. 3. Through knowledge management, companies operate with minimum fixed assets and overhead (people, inventory and facilities).
Give a brief description of the term population growth rate?
Explain, how the respiration is performed by the larva of amphibians?
How the immune memory is lead to the efficacy of vaccines and also produces allergies?
IT strategy is an extension of past activities If an IT department has been doing the same things for a number of years, it is easy to think that the same formula will work in the future. The department confuses strategy (identifyi
State the lasting form within the pteridophytes, the gametophyte or the sporophyte? How can it is compared to the bryophytes?
How are platyhelminthes characterized according to illustrations of representing beings, fundamental morphology, kind of symmetry, germ layers and coelom, excretory system, respiratory system, digestive system, circulatory system, nervous system and k
How does water move within sponges? Explain the function of the pores in such animals?
Describe the terms natural and artificial active immunization?
18,76,764
1932342 Asked
3,689
Active Tutors
1457939
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!