When the leaves of a Mimosa pudica plant are touched with a finger, they fold up quickly. This is an example of:
chemotropism
thigmonasty
photonasty
thigmotropism
Which of the following is a mis-matched pair?
adrenaline : pituitary gland
estrogen : ovary
pancreas : insulin
progesterone : ovary
The other name of movements independent of growth is:
Nastic movements
Non-directional
Tropic
Both (a) and (b)
One of the following statements is not true about thyroxine. This is:
Thyroid gland requires iron to synthesise thyroxine
It regulates carbohydrate, protein and fat metabolism
Iodine is essential for the synthesis of thyroxine
Thyroid gland can enlarge due to lack of thyroxine
The gap between two neurons is called a:
dendrite
synapse
axon
impulse
A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree grow straight up (vertically). This happens in response to
water and light
water and minerals
gravity and water
light and gravity
Blinking of eyes is an example of
diseases
habit
reflex action
response
A doctor advised a person to take injection of insulin because:
his blood pressure was high
his heart beat was high
his blood sugar was high
his thyroxine level in blood was high
The gustatory receptors of our body are in one of the following organs. This organ is :
ear
nose
tongue
skin
All the voluntary actions of our body are controlled by:
cerebrum
cerebellum
pons
medulla
