CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Assertion: Multicellular organisms are made up of multiple cells instead of one.
Reason: Plasma membrane of one large single cell in the whole organism won’t be able to service for the cytoplasm inside it.

A
Both assertion and reason are true and the reason is a correct explanation of the assertion
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
The assertion is true but reason is false
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Both the assertion and reason are false
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
The assertion is false but the reason is true
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Both assertion and reason are true and the reason is a correct explanation of the assertion
Multicellular organisms are made up of multiple cells instead of one large cell. This is so because, as the cell size increases the surface area and the volume increases. But the rate of increase of cytoplasm or volume is much more than the rate of increase of surface area. The size of the cell membrane available to service cytoplasm becomes lesser and lesser. This can result in starving of some inner parts of the cell for the nutrients. Hence, cells divide so that the cell membrane can comfortably service all of the cytoplasm by bringing in nutrients and getting rid of wastes. The cells also divide so that the DNA inside it can efficiently handle the demands placed on it by the cell. Hence, both assertion and reason are true and reason is the correct explanation of the assertion.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon