Column I | Column II | Column III | |
(1) | Petromyzon | Ectoparasite | Cyclostomata |
(2) | Ichthyophis | Terrestrial | Reptilia |
(3) | Limulus | Body covered by chitinous exoskeleton | Pisces |
(4) | Adamsia | Radially symmetrical | Porifera |
Match the following:
List - I | List - II | ||
---|---|---|---|
A) | Thyroid gland | I) | Calcitonin |
B) | Adrenal medulla | II) | Nor epinephrine |
C) | Pineal gland | III) | Melatonin |
D) | Pancreas | IV) | Glucagon |
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A typical unfertilized, angiosperm embryo sac at maturity is 8-nucleate and 7-celled.
Reason (R): The egg apparatus has 2 polar nuclei.
In the light of the above statements, choose the correct answer from the options given below: