Question
Correct sequence of events on larval development of Herdmania:
A. The blastopore of embryo closes and rudiment of tail formed
B. The chorion ruptured due to an enzyme secreted by inner follicle cells
C. The archenteron produces presumptive mesoderm as solid band
D. The presumptive notochordal occupy the central core of larva
E. The fully formed free swimming larva is produced
Choose the correct answer from the options given below:
This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
A, D, C, B and E
Herdmania Larval Development Sequence
Understanding the sequence of developmental events is crucial for Herdmania's larval progression. The correct order follows specific biological stages.
Correct Event Order
The established sequence for Herdmania larval development is:
- A. The blastopore of embryo closes and rudiment of tail formed: This marks an early stage where the primary embryonic opening seals, and the initial structure for the tail begins to appear.
- D. The presumptive notochordal occupy the central core of larva: Following early differentiation, the cells destined to form the notochord take up their position within the developing larva's core structure.
- C. The archenteron produces presumptive mesoderm as solid band: During gastrulation, the archenteron (primitive gut) gives rise to the mesodermal layer, which is essential for forming various tissues and organs.
- B. The chorion ruptured due to an enzyme secreted by inner follicle cells: This event represents hatching, where the protective outer layer (chorion) breaks open, enabling the larva to emerge.
- E. The fully formed free swimming larva is produced: This is the final outcome, a complete, mobile larva ready for its planktonic existence.
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