PART - 2 CH - 6 Control and Coordination Science - PART - 2 CH - 6 Control and Coordination

The brain is responsible for _______.

The gap between two neurons is called a ________.

Which of the following is a plant hormone?

Which is sensitive to touch?

Find incorrect statement for cerebrum.

Deficiency of _________ hormones in childhood leads to dwarfism.(Growth hormones (GH), Thyroid hormones, Insulin)

_________ produces testosterone hormone.(Testes, Ovaries, Adrenal glands)

If ________ is deficient in our diet, there is a possibility that we might suffer from goitre. (March 20)(Iodine, Calcium, Iron)

The timing and amount of animal hormone released are regulated by ________.(Feedback mechanism, Nervous system, Reflex action)

_________ hormone has the target organ heart.(Adrenaline, Insulin, Thyroxine)

Salivation, blood pressure and vomiting are voluntary actions.

Vegetative propagation takes place in the buds produced in the notches along the margins of Bryophyllum leaf.

The involuntary action like salivation is controlled by the medulla in the hind- brain.

Chemical coordination is seen in both plants and animals.

Hypothalamus plays an important role in the release of many hormones from pituitary gland.

lodine is necessary for the Synthesis of which hormone in human body?

Give an example of a plant hormone that promotes growth.

What are plant hormones?

Which part of the brain maintains posture and equilibrium of the body?

Define :
Reflex arc

What is the need for a system of control and coordination in an organism?

How does chemical coordination occur in plants?

Which signals will get disrupted in case of a spinal cord injury?

What is the function of receptors in our body? Think of situations where receptors do not work properly. What problems are likely to arise?

Why are some patients of diabetes treated by giving injections of insulin?

You were visiting your friend's house. You observed some indoor plants in drawing room. You noticed that shoots of all plants slightly moved towards open window. Aunty told you that she had often changed the position of the arrangement of plants. But in any position shoots of plants showed same behaviour.
(1) Which movements are shown by plants?
(2) Which hormone is responsible for such movement in plant?
(3) How such hormone is functioning in plant body?
(4) Which arrangement do you suggest for plants to show straight growth of shoot?

Your father-mother are in a age-group at forty plus. On their routine blood test, some disturbance in their blood tests were reported. Your family doctor advised your father to walk regularly and consume a diet containing low sugar. Doctor insisted your mother to take 25 mg elthroxine tablet daily.
(1) From your study, what do you think about the report of the blood test of your father?
(2) Which gland is not functioning properly and which hormone is not secreted in appropriate amount in your father's body?
(3) Which gland is affected in your mother's body?
(4) Why elthroxine tablet is suggested by the doctor?

You saw a tragic road accident resulting in death of two persons. The reason for that is bike rider tried to overtake the truck from wrong-side with overspeed. He was not wearing a helmet that caused head injury.
You were scared because you also have same habit to drive activa without wearing helmet. Your father often warned you that to drive vehicle without a driving licence is a crime.
(1) Which part of brain is involved into learning how to drive vehicle?
(2) Injury to which part of brain leads to instant death of an individual? Why?
(3) Which gland became more active when you saw the accident? Which hormone was poured in blood? What changes did you feel in body?

Explain feedback mechanism for regulation of hormone secretion.

For a particular situation which hormone prepares the human body for either fighting or running away from the situation? State the effect of this hormone in animal body.

What is the difference between the manner in which movement take place in a sensitive plant and the movement in our legs?

Compare and contrast nervous and hormonal mechanisms for control and coordination in animals.

How are involuntary actions and reflex actions different from each other?

How does phototropism occur in plant?

Draw the structure of a neuron and explain its function.