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

The movement of the flower of the Sunflower towards the direction of the Sun is called .........

$(a)$ Give the functions of cerebellum. (any two)
$(b)$ Name the components of central nervous system.

What are reflex actions? Give two examples. Explain a reflex arc.

Which is the correct sequence of the components of a reflex arc?

Give reasons :
$(a)$ Pituitary is often termed as master endocrine gland.
$(b)$ Pancreas helps in digestion and also regulates blood sugar level.
$(c)$ Adrenals are known as glands of emergency.