After culturing the anther of a plant,a few diploid plants were found along with haploid plants. The diploid plants could have arisen from

In which of the following pairs of plant structures are haploid chromosomes found?

For the formation of $140$ angiospermic seeds,how many meiotic cell divisions are expected?

What type of gametes are found in $Capsella$?

Choose the correct option from the following statements.
$I$. During embryogenesis,the zygote undergoes mitotic cell division.
$II$. In organisms with a diplontic life cycle,the zygote divides by meiotic cell division.
$III$. The pericarp (fruit wall) develops from the ovary wall after fertilization.
$IV$. In brinjal,sepals remain attached to the fruit even after fertilization.

Which of the following statements is incorrect $-$