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Phylum - Aschelminthes Video Lecture | Biology Class 11 - NEET

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00:01 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 Phylum - Aschelminthes Video Lecture - Biology Class 11 - NEET

1. What are the characteristics of organisms belonging to the phylum Aschelminthes?
Ans. Organisms belonging to the phylum Aschelminthes, also known as the roundworms, have several distinctive characteristics. They are bilaterally symmetrical, unsegmented, and possess a cylindrical body. They have a complete digestive system with a mouth and an anus. Additionally, they have a pseudocoelom, which is a fluid-filled body cavity.
2. How do roundworms reproduce?
Ans. Roundworms reproduce sexually, with separate male and female individuals. The males have specialized copulatory structures to transfer sperm to the females. The females produce large numbers of eggs, which are usually laid in the environment. Some species of roundworms also undergo a process called molting, where they shed their outer cuticle as they grow.
3. What are some examples of organisms belonging to the phylum Aschelminthes?
Ans. The phylum Aschelminthes includes a wide variety of organisms. Some examples of roundworms belonging to this phylum are the hookworms (such as Ancylostoma), pinworms (such as Enterobius), and the common roundworm (Ascaris lumbricoides). These organisms can be found in various habitats, including soil, freshwater, and marine environments.
4. How do roundworms affect human health?
Ans. Roundworms can have both direct and indirect effects on human health. Some species can cause parasitic infections in humans, leading to symptoms such as abdominal pain, diarrhea, and weight loss. They can also infect internal organs, such as the lungs or intestines. In addition, certain roundworms can cause diseases in animals, which can then affect human health indirectly.
5. Are there any economic or ecological implications of roundworms?
Ans. Yes, roundworms have economic and ecological implications. Some roundworms can infect agricultural crops, causing damage to plant roots and reducing crop yields. In livestock, roundworm infections can lead to reduced productivity and economic losses. Ecologically, roundworms play important roles in nutrient cycling and decomposition processes, contributing to the overall health of ecosystems.
181 videos|361 docs|148 tests
Video Timeline
Video Timeline
arrow
00:01 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
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