$A$ - In plants,the end of the juvenile phase marks the beginning of the reproductive phase.
$R$ - In plants,the juvenile phase is also known as the vegetative phase.

  • A
    $A$ and $R$ are incorrect.
  • B
    $A$ and $R$ are correct.
  • C
    $A$ is correct,$R$ is incorrect.
  • D
    $A$ is incorrect,$R$ is correct.

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In the figure given below,label the following parts: male gametes,egg cell,polar nuclei,synergid,and pollen tube.

Identify the false statement.

Identify the correct ratio of male gametes,vegetative cells,generative cells and microspore mother cells produced in a microsporangium if $80$ pollen grains are released from it.

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