Question

V. Choose the odd one out and give scientific reasons.
1. Spinal cord, cerebrum, cerebellum, medulla oblongata
2. Dendrites, axon, cyton,cerebellum
3. Stimuli, receptors, effectors, impulses
4. Axon, cerebellum ,cell body, dendrite
5. Cerebellum, cerebrum, medulla oblongata ,neuron​

Answer 1

Answer:

The odd ones out in the given questions are:

1. Spinal cord is the odd one out because the cerebrum, cerebellum, and medulla oblongata are parts of the brain.

2. Cerebellum is the odd one out because dendrites, axons, and cyton are parts of the neuron.

3. Stimulus is the odd one out because receptors, effectors, and impulses are the components of the sensory mechanism.

4. Cerebellum is the odd one out because dendrites, axons, and cell bodies are parts of the neuron.

5. Neuron is the odd one out because the cerebrum, cerebellum, and medulla oblongata are brain parts.

Explanation:

The scientific reasons are as follows:

1. The cerebrum is in the forebrain, whereas the cerebellum and medulla oblongata are in the hindbrain.

The medulla oblongata is the part of the brain that links to the spinal cord.

2. A neuron is made up of a cell body (cyton), long nerve fiber (axon), and communication appendages (dendrites).

3. When a neuron is excited, it produces electrical signals called impulses.

When receptors receive a stimulus, they generate an impulse and send it to effectors.

A stimulus is a change in the external or internal environment that causes the sensory system to activate.

4. The cerebellum is the region of the brain in charge of maintaining balance and postural functions, while dendrites, axons, and cell bodies are parts of the neuron.

5. Neuron is the odd one out because the cerebrum, cerebellum, and medulla oblongata are brain parts.