Biological Classification And System Of Classification Question 249
Question: Assertion : Slime moulds show alternation of generation. Reason : The sporangia bearing slime moulds represent haplophase.
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 both the assertion and reason are false
Show Answer
Answer:
Correct Answer: C
Solution:
Slime moulds exhibit alternation of generation.
The diploid plasmodium is a sporophyte.
Under certain conditions it bears sporangia.
The sporangia bearing plasmodium and spore producing sporangia constitute the sporophyte generation.
It is diplophase reduction division takes place at the time of differentiation of resting spore.
The resting spores germinate to produce the haploid, uninucleate swarm cells or myxamoebae.
The latter meet and fuse in pairs to form a zygote.
The haploid resting spores and the swarm cells or myxamoebae represent the haploid or gametophyte generation.
BETA
