Animal Kingdom Question 982
Question: Assertion : Reptilia possess amphicoelous vertebra. Reason : The stout centrum of amphicoelous vertebra is concave in front and convex behind.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If the assertion is false but reason is true
Show Answer
Answer:
Correct Answer: D
Solution:
A typical cervical vertebra consists of a stout centrum which is concave in front and convex behind, i.e., procoelous.
Neural spine is vertical and crest like.
Prezygapophyses are directed upwards and outwards.
Postzygapophyses are directed downwards and inwards.
On the ventral surface, the posterior region of the centrum carries articular facets for cervical ribs.
Amphicoelous vertebra has its centrum concave at both ends, this is the most primitive type and is found in nearly all fishes.
BETA
