Download App

Control and Co-ordination — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYControl and Co-ordination5 Marks
Question
Meninges and CSF.
✓

Answer

Functions of meninges:

  1. Meninges give protection to the brain and the spinal cord.
  2. They are also nutritive in function.
  3. Cerebrospinal fluid acts as a shock absorber. It protects the brain from mechanical injuries and from desiccation.
  4. It also maintains constant pressure inside and outside the CNS and regulates the temperature.

Functions of CSF:

  1. CSF helps in exchange of nutrients and wastes between the blood and the brain tissue.
  2. CSF supplies oxygen to the brain.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions in detail." from Control and Co-ordination→Control and Co-ordination — all question types→BIOLOGY STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Public all over India is very much concerned about the deteriorating air quality in large parts of North India. Alarmed by this situation the Resident’s Welfare Association of your locality organised an awareness programme entitled "Bury not burn". They invited you, being a biology student to participate.
  1. How would you justify your arguments that promote burying and discourage burning? (Give two reasons)
  2. With the help of flow charts, one for each practice depict the chain of events that follow.
→
Additional apoplastic pathway through secondary roots is beneficial to plants.
→
With the help of a labelled diagram of lateral view of cerebrum, describe its structure and give any 'two' functions of cerebrum.
→
Why is thalassemia categorised as a Mendelian disorder? State the condition when an individual will suffer from the disease.
→
  1. Comment on the pattern in which all communities undergo a change in composition and structure with changing environmental conditions.
  2. Explain 'climax community' and 'sere'.
  3. Differentiate between primary and secondary Succession, with examples.
→
Explain the ill-effects of opioids and cannabinoids on health. OR What are harmful effects of drug abuse?
→
  1. Draw a labelled longitudinal view of an albuminous seed.
  2. How are seeds advantageous to flowering plants?
→
What are the common properties of hormones?### State properties of hormones.
→
Is developing fever a bad sign or a good action? Explain.
→
Answer the following questions:
Four children with four different blood groups are born to parents where the mother has blood group ‘A’ and the father has blood group ‘B’. Work out the cross to show the genotypes of the parents and all four children.
→