plz tell me answers iam tenth standard
Answers
Answer:
I am ninth standard moj kardi bete
Answer:
1) The growth of the parts of plants in response to the force of gravity
2) (D) Is the answer
3) Neuron picture i put it ok
4) Clapping at the end of a program is voluntary action while fluctuating blood pressure in the body is involuntary.
5) primary shoot, primary root
6) it is secreted by parathyroid gland
7) • Reflex arc
• It gives sudden action in response to the event happening in the environment
A) Sensory neuron : It conducts the impulse of stimulus from receptor to the spinal cord
B) Effectors : Which shows the sudden visible response
Reflex arcs have evolved in animals because the thinking process of brain is not fast enough in many animals.Mean while many animals have very little of the complex neuron network needed for thinking.So it can be function in the absence of true thought process and increase the chance of survival.
8) • Adrenaline is directly secreted into the blood.The blood to the skin is reduced due to contraction of muscles around small arteries.
• The breathing rate increases because of the contractions of the diaphragm and the rib muscles. to heart beats faster, resulting in supply of more oxygen to the muscles
9)
