Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

WHY IS PINEAL GLAND CONSIDERED AS A VESTIGIAL GLAND EVEN THOUGH IT SECRETES MELATONIN FOR MAINTAINING CALCIUM AND PHOSPHORUS LEVELS IN THE BODY AND IT ALSO SECRETES SERATONIN ?
Asked by Sanjay | 27 Aug, 2014, 06:28: PM
answered-by-expert Expert Answer
  • Pineal gland still being considered as vestigial organ is not sure. Until the 1950s scientists regarded the pineal vestigial organ.
  • Comparative anatomical studies had shown that the pineal gland has the same embryological origin as the parietal i.e. the third eye in other, less evolved vertebrates.
  • For example, several lizards have a parietal eye seated in an opening at the top of their skulls.
  • In amphibians, birds, and mammals, this parietal opening has closed, so the pineal gland remains inside the skull. Hence it has lost its function.
  • But the pineal gland continues to secrete melatonin which has high significance. However its role in other vertebrates is unknown.
Answered by Hemangi Binny | 28 Aug, 2014, 09:46: AM
CBSE 10 - Biology
Asked by ishapanday76 | 20 Oct, 2023, 01:09: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by hhemantasingh87 | 05 May, 2022, 03:00: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by mohanapriya.priya31 | 20 Jun, 2020, 05:42: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by mohanapriya.priya31 | 20 Jun, 2020, 04:53: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by labheshvaidya | 24 Oct, 2019, 03:22: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by rashi.mauli | 15 Sep, 2019, 09:27: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by ssg61177 | 02 Sep, 2019, 10:53: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by kumaripujaa2004 | 26 Jul, 2019, 12:27: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by mahenshaikhjuly12 | 26 Jun, 2019, 01:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×