Control and Coordination Worksheets

Control and coordination Worksheet-1

Comprehension:

The main organs of the nervous system are: Brain, Spinal cord and Nerves. The brain is located inside the skull of our head. The spinal cord is a very thick nerve which runs inside the cavity of backbone in our body. The nerves are a kind of wires which are distributed all over our body. There are mainly two types of nerves in our body: cranial nerves and spinal nerves. The cranial nerves connect all the parts in the head directly to brain. The spinal nerves connect all the remaining parts of the body to the spinal cord, a third type of nerves called visceral nerves. The visceral nerves connect the internal organs of the body to spinal cord.

1. Most important organ of the nervous system is-

A. Brain                                          B. Cranial nerves

Control and coordination Worksheet-2

Fill in blanks:

1. The changes in the environment to which the organisms respond and react are called _____.

2. The working together of the various organs of an organism in a systematic manner so as to produce a proper response to the stimulus is called_____.

3. The plants coordinate their behavior against environmental changes by using _____.

4. The function of control and coordination in plants is performed by the chemical substances called _____.

5. The plant hormones are also called _____.

Control and coordination Worksheet-3

Fill in blanks:

21. The opening up of the petals of dandelion flowers in morning in bright light and closing in the evening when the light fades is an example of _____.

22. The non-directional movement of a plant part in response to the touch of an object is called _____.

23. The sensitive plant has pad-like swelling called _____ at the base of each leaf.

24. The plant hormones are also known as plant growth substances plant growth substances ­­­­­­­­­­­­­_____.

25. _____ is a plant hormone which inhibits (or prevents) the growth.