The residual persistent part which forms the perisperm in the seeds of beet is:

$A$ viable seed of date palm $(Phoenix dactylifera)$ was discovered at the King Herod's palace near the Dead Sea. How many years old was this viable seed?

The $2000$ year old seed excavated from King Herod's palace at the Dead Sea belongs to:

Why is vivipary an undesirable trait in annual crop plants?

What do the integuments of the ovule transform into after fertilization?

The megasporangium transforms into a/an ...... .