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Compared to amphibians what are the two reproductive novelties of beings of the class Reptilia for the survival in dry environments?
Compared to amphibians the two major reproductive innovations of beings of the class Reptilia for the terrestrial habitat are internal fecundation and shelled eggs.
Image Diversity: reptilian egg
Copulation and Fertilisation in Hermaphrodites Copulation between hermaphrodites is common. Flatworms possess a cirrus and penis that is inserted into the uterine vaginal ope
Q. What is the difference between sexual gametes and spores? Do humans present sexual gametes or spores? Sexual spores are structures generated from meiosis with ploidy number
Diplotene: The paired chromosomes repel each other and begin to separate. Separation however, is not completed, because homologous chromosomes remain united by their point
Define Risk assessment Risk assessment has been described as the process of organizing information concerning a particular risk in a systematic way so that the dec
Q. What is biodiversity? The Biological diversity is the variety of species of living beings of an ecosystem. In the ecosystems which are more biodiverse, like tropical forests
What are the constituent elements of the blood? The blood is made of a liquid and a cellular part. The fluid part is known as plasma and in it there are several substances, suc
Explain Cardiac Muscle or heart muscle? Cardiac muscle, or heart muscle, is a striated muscle that occurs only in the vertebrate heart. The heartbeat is controlled by noncontr
Describe Congenital Pulmonary Stenosis? The murmur present since birth. PS may be valvular, sub-valvular, or supravalvular. An obstruction may occur within the RV cavity by an
Male reproductive system of earthworm: Testis : There are two pairs of testis one on eachside of the body in 10th and 11th segments. They produce sperm mother cells. Seminal Ves
What is the significance of Malpighian tubules? Excretory structures found in insects and some spiders. Though similar in appearance and function the two aren't homologous. Mal
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