Control and coordination Worksheet-22

Control and coordination Worksheet-22

 

Subjective questions:

  1. Name the two hormones secreted by pancreas. Write one function of each hormone named.

 

  1. Name the hormone responsible for regulation of :

(i) metabolism of carbohydrates, fats and proteins.

(ii) balance of calcium and phosphate.

(iii) blood pressure.

(iv) water and electrolyte balance

 

  1. Explain 'reflex action' with a suitable example.

 

  1. Differentiate between tropic and nastic movements in plants, give one example of each.

 

  1. State the main function of 'pituitary gland'. Write the effect of

(i) excessive and

(ii) sluggish activity of this gland on the growth of a child.

 

  1. Taking the example of auxins and cytokinins together, explain,

(i) a synergistic action in plants, (ii) an antagonistic action in plants.

 

  1. Where does cerebrospinal fluid occur in our body? Mention any two of its functions.

 

  1. Name the ovarian hormones and give the function of any one of them.

 

  1. What is phytohormone? Name any two phytohormones.

 

  1. Mention the receptors for light and sound in animals.

 

  1. How does control and coordination take place in plants?

 

  1. Mention names of various phytohormones.

 

  1. Differentiate between tropic and nastic movements.

 

  1. What is autonomic nervous system?

 

  1. Define reflex action with suitable example.

 

  1. Name the hormones secreted by thyroid, parathyroid and pancreas.

 

  1. List the functions of testosterone and estrogen.

 

  1. Write names of three hormones secreted from pituitary gland.

 

  1. Give two examples of tropic movements.

 

  1. Name the two types of neurons? How is the functioning of one different from the other?

 

  1. Name the four regions of the fore-brain and mention any one function per region.

 

  1. Which is the control centre of a reflex action? What is the route taken by the reflex action called?

 

  1. Give functions of

(a) Calcitonin (b) Prolactin.

 

  1. How do you support the statement that 'pancreas' are the overall controller of the blood glucose level?

 

  1. What is the nature of action of phytochromes?

 

  1. Name the hormone associated with :

(a)    maintenance of pregnancy

(b)    regulation of male sex characters.

 

  1. What are  'releasing hormones'? Where are they released from?

 

  1. Classify the following movements as tropic or nastic:

(a) opening of flower

(b) roots moving downwards.

(c) shoots moving towards light

(d) twirling of a tendril.

 

  1. What is spinal cord and how is it protected?

 

  1. Where are pons present in the brain? Which activity do they control?