Fill in the blanks:
Teh top layer of earth upto a depth of 20-40 cm where crops can grow is called................ .

The top layer of the earth's surface over which plants are grown is called

Fill in the following blanks: (a) A plant's response to light is called........ (b) A plant's response to gravity is called..... . (c) Plant shoot grows upward in response to....... (d) Plant roots grow downward in response to ....... (e) Tendrils wind around a support in response to ........ (f) Plant roots grow towards.... and in the direction of force of ........ (g) A root of a plant grows downward. This is knows as......... (h) ......is the hormone that causes phototropism in plants (i) The response of leaves to the sunlight is called ...............

Fill In the blanks: The energy stored in an object when it is lifted above the surface of earth is called ___

What is the solid crust or the hard top layer of the earth called?