A) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
B) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C) Assertion is true but Reason is false
D) Assertion is false but Reason is true
Correct Answer: C
Solution :
In Fritllaria, tetrasporic type embryo sac, four megaspores are formed after meiosis division in MMC in which one migrates towards micropylar pole and three migrate towards the chalazal pole where they become fused and form a triploid nuclei. Two successive mitoric division operates in both these two nuclei, which result four cells at micropylar pole (haploid) and four cells are formed on chalazal pole (each triploid). One (haploid) nuclei from micropylar pole and one (triploid) nuclei from chalazal pole migrate towards the centre, where they are organized into the central cell. Thus, central cell contains four nuclei. Three cells are arranged into egg apparatus, at micropylar pole. Three cells are organised into antipodal cells (each with triploid nucleus) at chalazal pole.
You need to login to perform this action.
You will be redirected in
3 sec
