Q1 of 86 Page 148

A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to ___________.

Shoots are positively phototropic so they bend towards light whereas roots grow towards earth’s gravity i.e. they are positively geotropic. So roots are in contact with soil and branches grow straight.

More from this chapter

All 86 →
2

The tropic movement that helps the climbing vines to find a suitable support is __________.

 3

The chemical reaction occurs during photosynthesis is _____________.

 4

Transpiration is best defined as __________.

 1

The response of a plant part to the chemical stimulus is called phototropism.