Neural organisation is composed of network of neuron is............whereas it is present in the form of neural tissue in..........

Options

A. Insect, porifera
B. Hydra, Insects
C. Hydra, Protozoas
D. Protozoans Insects

Answer

To solve the question regarding the neural organization composed of networks of neurons and neural tissue, we can break it down into the following steps:

### Step 1: Understand the Neural Organization
Neural organization refers to how neurons are arranged and function within an organism. It can either be in the form of a network of neurons or as neural tissue.

### Step 2: Identify the Organisms
The question provides options that include Hydra, insects, porphyra, and protozoans. We need to determine which organism has a network of neurons and which has neural tissue.

### Step 3: Analyze Hydra
Hydra is a simple organism that has a relatively small number of neurons. These neurons are interconnected, forming a network. This network allows Hydra to respond to stimuli, indicating that Hydra has a network of neurons.

### Step 4: Analyze Insects
In contrast, insects have a more complex nervous system. Their neural organization is more advanced, and their neurons aggregate to form neural tissue. This neural tissue is responsible for transmitting electrical impulses throughout the insect's body.

### Step 5: Conclusion
Based on the analysis:
- The network of neurons is present in Hydra.
- The neural tissue is present in insects.

Thus, the correct answer is: **"Neural organization is composed of a network of neurons in Hydra, whereas it is present in the form of neural tissue in insects."**

### Final Answer:
**Option B: Hydra and insects.**

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