Extraembryonic membranes vertebrates
Justify that are the extraembryonic membranes similar in all vertebrates?
Expert
The presence of every extraembryonic membrane differs according to the vertebrate class. In fishes and amphibians just the yolk sac is present. In reptiles and birds apart from the yolk sac there are also amnion, chorion and allantois. In placental mammals besides all of these membranes, placenta is also present.
Describe the term infructescences, pseudofruits and parthenocarpic fruits?
Explain which period of life does the formation of gametes start in female?
What are veins, venous vessels and venules?
Why is buprenorphine less addictive than other opioids (such as fentanyl) - is it understandable by its strength of binding to the general receptor?
Regarding their final products (that is, daughter cells and their ploidies) what are the basic differences between meiosis and mitosis?
What does radial symmetry signify? Describe the type of symmetry found in the chordates? Name the other phyla of animal kingdom that exist in species with radial symmetry?
What is the meaning of concentration gradient? Is it accurate to refer to concentration gradient of water?
Streptokinase is a substance used in treatment of acute myocardial infarction. How does this substance act?
Describe in detail the terms scotopic and photopic vision?
Write down the types of reproduction presented by cnidarians?
18,76,764
1926250 Asked
3,689
Active Tutors
1434893
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!