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STD 11 - 7. Structural organisation in animal — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 7. Structural organisation in animal1 Mark
MCQ
In cockroach head can move in all directions due to
  • A
    absence of neck.
  • B
    fusion of all $6$ segments of head.
  • ✓
    flexible neck.
  • D
    head is small and light weight.
✓

Answer

Correct option: C.
flexible neck.
c
The head is triangular in shape which lies anteriorly at right angles to the longitudinal body axis. The head is formed by the fusion of six segments. The flexible neck facilitates movement in all directions.

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