Involuntary actions in the body are controlled by:

Write true or false for the statement: Growth of pollen tubes towards ovules is due to chemotropism.

$(i)$ Differentiate between sensory neurons and motor neurons.
$(ii)$ How is the brain protected in our body?
$(iii)$ Name the part of the brain responsible for the precision of voluntary actions and maintaining body posture and balance of the body.

How does the plant detect the touch,and how do the leaves move in response?

What is the movement of a plant shoot towards light called?

Sunflowers orient themselves towards the direction of sunlight. What type of tropism is this?