NEET UG Unit 8N: Ecosystem Services, Succession & Global Change — practice questions — page 3

Explore 61 free Unit 8N: Ecosystem Services, Succession & Global Change questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 8N: Ecosystem Services, Succession & Global Change questions and exercises with answers

Showing questions 61–61 of 61.

At which embryonic stage are the primary germ layers first clearly established in animals?Read the answer and worked solution →

Worked practice questions

At which embryonic stage are the primary germ layers first clearly established in animals?

Morula
Blastula
Gastrula
Neurula

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Correct answer: C. Gastrula

The germ layers are established during gastrulation, so the correct stage is the gastrula. This is the stage at which ectoderm, endoderm, and in triploblastic animals mesoderm become organized.

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