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Kingdom Animalia : PHYLUM NEMATODA AND PHYLUM ANNELIDA Video Lecture - Class 9

Video Timeline

00:00	4th Largest Phylum of Animal Kingdom
02:21	5th Phylum Annelida
03:59	Digestive system of Annelida
05:03	Three Classes of Phylum Annelida
06:25	Summary
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FAQs on Kingdom Animalia : PHYLUM NEMATODA AND PHYLUM ANNELIDA Video Lecture - Class 9

1. What are some examples of organisms belonging to Phylum Nematoda and Phylum Annelida?

Ans. Some examples of organisms belonging to Phylum Nematoda (roundworms) include Ascaris, Caenorhabditis elegans, and Trichinella spiralis. Examples of organisms belonging to Phylum Annelida (segmented worms) include earthworms, leeches, and marine polychaetes.

2. What are the main characteristics of Phylum Nematoda and Phylum Annelida?

Ans. Phylum Nematoda is characterized by having a long, cylindrical body shape, unsegmented body, a complete digestive system, and a protective cuticle covering. Phylum Annelida, on the other hand, is characterized by having a segmented body, a well-developed coelom, a closed circulatory system, and a distinct head region.

3. How do Phylum Nematoda and Phylum Annelida differ in terms of their locomotion?

Ans. Phylum Nematoda moves by a unique mode of locomotion called "thrashing." They use their longitudinal muscles to create whip-like movements, which helps them move in a wavelike manner. In contrast, Phylum Annelida exhibits various modes of locomotion. Earthworms use peristaltic contractions of their circular and longitudinal muscles to crawl, while marine polychaetes use their parapodia (bristle-like appendages) for swimming or crawling.

4. What is the ecological significance of Phylum Nematoda and Phylum Annelida?

Ans. Phylum Nematoda plays a vital role in various ecosystems as decomposers, breaking down organic matter and recycling nutrients. They also serve as important parasites in both plants and animals. Phylum Annelida, particularly earthworms, contribute to soil fertility by enhancing soil structure and nutrient cycling through their burrowing activities. They are also an essential food source for many organisms in aquatic and terrestrial ecosystems.

5. Are there any economic benefits associated with Phylum Nematoda and Phylum Annelida?

Ans. Yes, both Phylum Nematoda and Phylum Annelida have economic significance. Nematodes, such as Caenorhabditis elegans, are extensively used as model organisms in scientific research, contributing to advancements in genetics, developmental biology, and neurobiology. Some nematodes are also beneficial in controlling agricultural pests. Annelids, especially earthworms, are commercially cultivated for vermicomposting, which produces nutrient-rich organic fertilizers. They are also used as bait in fishing and play a crucial role in the aquaculture industry.

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Jan 12, 2025 Last updated

Kingdom Animalia : PHYLUM NEMATODA AND PHYLUM ANNELIDA for Class 92025 is part of Class 9 preparation. The notes and questions for Kingdom Animalia : PHYLUM NEMATODA AND PHYLUM ANNELIDA have been prepared according to the Class 9 exam syllabus. Information about Kingdom Animalia : PHYLUM NEMATODA AND PHYLUM ANNELIDA covers all important topics for Class 92025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Kingdom Animalia : PHYLUM NEMATODA AND PHYLUM ANNELIDA.

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Video Timeline

00:00	4th Largest Phylum of Animal Kingdom
02:21	5th Phylum Annelida
03:59	Digestive system of Annelida
05:03	Three Classes of Phylum Annelida
06:25	Summary
More