Question

दिए गए स्थायी स्लाइड (B का अध्ययन करें तथा सचित्र वर्णन क
रें मेढ़क के ब्लास्टूला का अनुप्रस्थ काट मेढ़क​

Answer 1

Answer:

Where is image ???????..

Answer 2

Blastula is the embryonic developmental stage in the frog that is formed from the zygote on cleavage.

• The frog blastula is called an amphiblastian as the hole is only closed in the animal's stump.
• In a frog egg the cleavage is holoblastic and uneven.
• Initially the continuous separation of the blastomeres formed a ball that resembled a solid structure. It is called the morula stage.
• The morula stage leads to a stage called a blastula which is an empty ball as a structure.
• A common feature of spinal blastula is that it contains a layer of blastomeres, known as blastoderm, surrounding the blastocoel.