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.
What are the features of Health and Safety (H & S) in a risky areas of an organization?
Specify two groups of the defence mechanisms of body against the foreign or harmful agents? Specify the difference between them?
Explain the term mixed gland? What is purpose the pancreas is considered as a mixed gland?
Name the type of asexual reproduction which takes place in hydras? Answer: Hydras reproduce asexually through budding.
Most of an individual's specific needs are dormant much of the time. The arousal of any particular set of needs at a specific point in time may be caused by internal stimuli found in the individual's physiological condition, emotional or cognitive processes, or by stimuli in the outside environme
Which are the main types of animal tissue?
For enzymatic reaction what is the consequence of a substance with similar spatial conformation as an enzymatic substrate? How is this kind of substance recognized?
Is the mammalian embryonic growth indirect or direct? Answer: In mammals, the embryonic growth is direct, devoid of larval phase.
How are mammals categorized according to examples of representing beings, basic morphology, nitrogen waste, skin, circulation, respiration, thermal control and kinds of reproduction?
Write down the main events of third mitotic period.
18,76,764
1943820 Asked
3,689
Active Tutors
1420697
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!