English

Which of the Following is Not a Natural Reflex Action? - Biology

Advertisements
Advertisements

Question

Which of the following is not a natural reflex action?

A. Knee-jerk

B. Blinking of eyes due to strong light

C. Salivation at the sight of food

D. Sneezing when any irritant enters the nose

Advertisements

Solution

Salivation at the sight of food

shaalaa.com
  Is there an error in this question or solution?
2013-2014 (March) Science Paper 3

RELATED QUESTIONS

Give the functions of medulla.


What is a reflex action? Explain with the help of an example.


Multiple choice question. Tick (✓) the correct choice:

Reflex actions occur under the control of

  1. brain
  2. medulla oblongata
  3. spinal cord
  4. cerebrum

Note the relationship between the first two words and suggest the suitable word/words for the fourth place.

Stimulus : Receptor :: Impulse : ______.


State whether the following is

Cleaning


State whether the following is

Salivation when food is put in the mouth.


What type of reflex is the following?

Sweating in summer


A change in the environment that causes an animal to react is called ______.


Why have reflex arcs evolved in animals? 


The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the following questions.

  1. Name the phenomenon shown in the figure and define the same.
  2. Identify the parts labelled as 1 and 2. Write one functional difference between these two.
  3. Name the bony protective covering and the membranous protective covering of the spinal cord.
  4. Label the guidelines 3 and 4.
  5. How is the labelled part 3 different from part 4 with respect to its composition (part of neuron)?
  6. Give the technical term for the point of contact between the two nerve cells.
  7. Name the fluid filled inside the central canal of spinal cord.
  8. Name the term used for a small gap between two neurons.
  9. Give one example of a neurotransmitter.
  10. Draw a neat diagram of a nerve cell and label the parts: Perikaryon, Node of Ranvier, Myelin sheath and Axon terminals.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×