Chapter 16 - Support and Movements - 8


Biology Class 12
1. There are twelve vertebrae in lumbar region


2. In skull cranium consists of 14 bones and facial bones are 8 in numbers.


3. Bone forming cells are called osteocytes.


4. All changes of ecdysis are controlled by nervous system and harmone called ecdysone


5. Epinasty is due to gibberellins and hyponasty is due to auxins


6. Autonomic movements are due to external sources and paratonic movements are due internal sources


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