Question

does the radicle of a seed always grow downward ?
thank you ! @Abhisar

Answer 1

I think thats True

Answer 2

The radicle shows two behaviours.

1) Negative Photo-Tropism = It grows in opposite direction of sunlight.

2) Positive-Geotropism = It grows in the direction of gravity.

Answer 3

if a celery stalk is place in a gas collecting tube with water and oil and is place in the sun ...will transpiration take place the same way if it didnt had oil ...if not why ? @Abhisar