The shoots grow away from the source of water are said to be positively_______ .

Stlit roots grow from

Name the source of pathogen in water.

Root system grows from

Give the sources of pathogen into water.

The movement of roots towards a source of water is called-

What is the main source of heavy water?

A car is moving with a speed of 72 "km-hour"^(-1) towards a roadside source that emits sound at a frequency of 850 Hz. The car driver listens to the sound while approaching the source and again while moving away from the source after crossing it. If the velocity of sound is 340 ms^(-1) , the difference of the two frequencies, the driver hears is

The root portion grows away from the direction of light, so the shoots are called ____phototropic.