Question: The inner tube of a nematode's body is called…
Options:
Integument
Stomodeum
Cuticle
Alimentary canal
✅Explanation:
The inner tube of a nematode's body is its alimentary canal or digestive tract. It is a complete tube that runs from the mouth at the anterior end to the anus at the posterior end. The alimentary canal is responsible for the ingestion, digestion, absorption of nutrients, and elimination of waste products.
The inner tube of a nematode's body is its alimentary canal or digestive tract. It is a complete tube that runs from the mouth at the anterior end to the anus at the posterior end. The alimentary canal is responsible for the ingestion, digestion, absorption of nutrients, and elimination of waste products.
• The nematode alimentary canal is divided into three main parts:
Stomodeum: This includes the mouth, buccal cavity, and pharynx (esophagus). The stomodeum is lined with cuticle and is involved in food intake and initial breakdown.
Mesenteron (Intestine): This is the main site of digestion and absorption. The intestine is a single layer of cells and is not lined with cuticle.
Proctodeum: This includes the rectum and anus. The proctodeum is lined with cuticle and is responsible for the elimination of waste products.