Differentiate cockroach and frog according to their position to heart and organs of respiration.

Explanation

### Step-by-Step Text Solution:

**1. Position of Heart:**
- **Cockroach:** The heart of a cockroach consists of 13 chambers and is located pericardially (around the heart) and dorsally (toward the back) to the gut. This positioning is indicative of an open circulatory system, where blood flows freely through cavities and directly bathes the organs without a defined pathway.
- **Frog:** In contrast, the frog has a three-chambered heart situated ventrally (toward the belly) between the lungs. This arrangement is part of a closed circulatory system, where blood circulates through a network of vessels, ensuring more efficient transport of nutrients and gases.

**2. Organs of Respiration:**
- **Cockroach:** The respiratory system of a cockroach is comprised of a network of tubes known as tracheae. These begin at openings called spiracles, leading into larger tracheae and further branching into smaller tracheoles that permeate the body, facilitating direct gas exchange with tissues.
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