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What is a blastocele?
A blastocele is the fluid-filled cavity in the blastula.
Compare the frogs blastula with that of a sea star?
The frog blastula is formed through holoblastic cleavage, resulting in a multicellular blastula with a fluid-filled cavity (blastocoel). In contrast, the sea star blastula is formed through radial holoblastic cleavage, leading to a solid blastula with no blastocoel. Additionally, the frog blastula undergoes gastrulation to form a gastrula with three germ layers, while the sea star blastula directly develops into a bipinnaria larva without gastrulation.
What comes first gastrula or blastula?
The blastula is the developmental stage that forms before the gastrula. During embryonic development, the blastula undergoes a process called gastrulation, which results in the formation of the gastrula.
What is the tubular cavity within the body called?
The tubular cavity within the body is called a lumen. It refers to the inner space of a tubular structure such as a blood vessel or intestine. The lumen allows for the passage of gases, liquids, or other substances within the body.
Which divides many times to form a blastula?
A zygote divides repeatedly through the process of cleavage to form a blastula. Cleavage involves a series of rapid cell divisions without cell growth, resulting in a multicellular structure called a blastula with a hollow, fluid-filled center called a blastocoel.
What is the central cavity of a blastula called?
blastocoel
What is a blastocoele?
A blastocoele is the fluid-filled cavity in the blastula.
What is blastocoel?
A blastocoel is the fluid-filled cavity in the blastula.
What is a blastocele?
A blastocele is the fluid-filled cavity in the blastula.
A blastula is a stage in the development of an embryo that consists of a?
hollow ball of cells formed after the morula stage. It is characterized by a fluid-filled cavity called the blastocoel surrounded by a layer of cells called the blastoderm. The blastula is an early stage in embryonic development before gastrulation occurs.
What is the composition of a blastula?
the blastula is an early stage of embryonic development in animals. its a hollow sphere of cells surrounding an inner fluid-filled cavity called the blastocoele formed during an early stage of embryonic development in animals
What is the shape of a blastula?
A blastula is typically a hollow, fluid-filled sphere formed during the early stages of embryonic development. It is characterized by a single layer of cells surrounding a central cavity called the blastocoel. The shape of a blastula is usually spherical or more irregular in some organisms.
Describe the composition of a blastula?
A Blastula is the usually spherical structure produced by cleavage of a zygote, consisting of a single layer of cells (blastoderm) surrounding a fluid-filled cavity (blastocoele). It is the early form of an animal embryo that develops from a morula. It is also called a blastosphere.
How does the morula stage of sea star development differ from the blastula stage?
The blastula is a single-layered ball with a fluid-filled cavity called the BLASTOCOEL in the middle (which the morula stage lacks). --Side note: The morula is a ball of cells about the same size as the original zygote and the large number of embryonic cells of the morula arrange themselves into a blastula, with the blastocoel in the middle.
Compare the frogs blastula with that of a sea star?
The frog blastula is formed through holoblastic cleavage, resulting in a multicellular blastula with a fluid-filled cavity (blastocoel). In contrast, the sea star blastula is formed through radial holoblastic cleavage, leading to a solid blastula with no blastocoel. Additionally, the frog blastula undergoes gastrulation to form a gastrula with three germ layers, while the sea star blastula directly develops into a bipinnaria larva without gastrulation.
Why blastocoel of blastula of frog called excentric?
The blastocoel of the frog blastula is called eccentric because it is located closer to one pole of the blastula instead of being centrally located. This eccentric positioning is due to the unequal distribution of yolk in the frog egg, causing the blastocoel to be displaced towards the animal pole where there is less yolk.
What is the cavity?
medullar cavity is the space within the diaphysis of a bone that contains yellow bone marrow. also called the marrow cavity ..
