MCQ
Which excretory organ is used by humming bird?
- AProtonephridia.
- BNephridia.
- CMalpighian tubules.
- ✓Kidneys.
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Assertion $A$: A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem.
Reason $R$: Internode of the shoot gets condensed to produce different floral appendages laterally at successive node instead of leaves.
In the light of the above statements, choose the correct answer from the options given below :
$R -$ Plasma membrane of a cell is selectively permeable.