Science
Control and Coordination
Practice questions
What is the main advantage of the brain receiving information later in a reflex action?If the medulla part of the brain is affected, which activity may be seriously affected first?What is the correct reason for a message moving in one direction in a neuron?How does a message pass to the next neuron at a synapse?Which of the following pairs is correct?Why do hormones affect only specific target organs?If a person has iodine deficiency in food for a long time, which gland will be most affected?Deficiency of which hormone may increase the sugar level in blood?Increase in heartbeat and breathing rate during fear is related to which hormone?Why is the pituitary gland called the master gland?A plant was given light from one side. After some time the stem bent towards light. What is the main reason for this bending?Roots can grow towards water and in the direction of gravity. What feature of plants does this show?The stem grows towards light but the root usually grows away from light. What does this show?Touch-me-not leaves fold on touch but this is not tropism. What is the correct reason?In which situation will positive geotropism be seen?In which situation will negative geotropism be seen?If the tip of a plant is cut off, why may phototropism become weak?Which pair correctly matches the gland and hormone?What may happen if a child produces too little growth hormone?Deepening of voice in boys during adolescence is mainly related to which hormone?