Which process is characterized by the sequence "Morula -> Blastula -> Gastrula"?

Which process is characterized by the sequence "Morula -> Blastula -> Gastrula"?

• A. Cellular respiration
• B. Embryonic development
• C. Protein synthesis
• D. Photosynthesis

Answer: (B)

The sequence "Morula -> Blastula -> Gastrula" is a clear indicator of stages in embryonic development. After fertilization, the zygote undergoes cleavage to form a solid ball of cells known as the morula. As the morula continues to divide, it transforms into the blastula, which is characterized by the formation of a hollow sphere of cells with a fluid-filled cavity called the blastocoel. Following this, the blastula undergoes a process called gastrulation, leading to the formation of the gastrula, where the three germ layers (ectoderm, mesoderm, and endoderm) begin to differentiate. This process of transitioning from morula to blastula to gastrula is essential for establishing the basic body plan of the organism and sets the stage for further development. Other options listed involve different biological processes: cellular respiration pertains to energy production in cells, protein synthesis refers to the creation of proteins from amino acids, and photosynthesis involves the conversion of light energy into chemical energy in plants. These processes do not involve the specific embryological stages described in the question.

The sequence "Morula -> Blastula -> Gastrula" is a clear indicator of stages in embryonic development. After fertilization, the zygote undergoes cleavage to form a solid ball of cells known as the morula. As the morula continues to divide, it transforms into the blastula, which is characterized by the formation of a hollow sphere of cells with a fluid-filled cavity called the blastocoel. Following this, the blastula undergoes a process called gastrulation, leading to the formation of the gastrula, where the three germ layers (ectoderm, mesoderm, and endoderm) begin to differentiate.

This process of transitioning from morula to blastula to gastrula is essential for establishing the basic body plan of the organism and sets the stage for further development. Other options listed involve different biological processes: cellular respiration pertains to energy production in cells, protein synthesis refers to the creation of proteins from amino acids, and photosynthesis involves the conversion of light energy into chemical energy in plants. These processes do not involve the specific embryological stages described in the question.