Class 11th – Protozoans – Zooflagellates | Biological Classification | Tutorials Point

Summary

This video introduces zoo flageolates, a group of flagellated protozoa characterized by whip-like projections called flagella. These organisms are primarily pathogenic, causing diseases as endoparasites, residing inside host organisms. They can spread via vectors and may also engage in symbiotic relationships. Zoo flageolates are heterotrophic, lacking chlorophyll, and reproduce through binary fission. They store glycogen for nutrition.

Takeaways

• 🐠 Zoo flageolates are a group of protozoans characterized by the presence of flagella.
• 🔬 Flagella are whip-like projections that serve as locomotory organs for these organisms.
• 🦠 Zoo flageolates are mostly pathogenic, meaning they can cause diseases in their hosts.
• 🐛 They are endoparasites, living inside the bodies or cells of their hosts.
• 🌐 These parasites can be transmitted from one organism to another with the help of vectors.
• 🤝 Some zoo flageolates can also have mutualistic relationships with other organisms without being pathogenic.
• 🍽️ Zoo flageolates are heterotrophic, obtaining their nutrition from external sources as they lack photosynthetic pigments.
• 🔄 They can be saprozoic, secreting enzymes to break down complex food materials into simpler forms for absorption.
• 📦 Glycogen is the primary storage material for food in zoo flageolates.
• 🌸 Reproduction in zoo flageolates occurs mainly through binary fission, a form of sexual reproduction.

Q & A

What are zooflagellates?

Zooflagellates are a group of protozoans that are characterized by the presence of flagella, which are whip-like structures on the surface of these cells.

What is the significance of the term 'flagellated protozoa'?

The term 'flagellated protozoa' indicates that these organisms possess flagella, which serve as locomotory organs for movement.

Are zooflagellates mostly pathogenic?

Yes, zooflagellates are mostly pathogenic, meaning they can cause diseases in their hosts.

What is the parasitic mode of nutrition in zooflagellates?

Parasitic mode of nutrition in zooflagellates involves them being dependent on other host organisms for nutrition, as they cannot make their own food.

What does it mean for zooflagellates to be endoparasites?

Being endoparasites means that zooflagellates reside inside the body or cells of their hosts to obtain nutrients.

How do zooflagellates spread from one organism to another?

Zooflagellates can spread from one organism to another with the help of vectors, which carry and transmit these organisms.

Can zooflagellates have a mutual relationship with other organisms?

Yes, some zooflagellates can act as symbionts, having a mutual relationship with other organisms without being pathogenic and may even be beneficial to the host.

How do zooflagellates obtain their nutrition?

Zooflagellates are heterotrophic, meaning they cannot make their own food. They secrete enzymes to break down complex food materials outside their bodies into simpler substances, which they then absorb.

What is the primary stored food material in zooflagellates?

The primary stored food material in zooflagellates is glycogen.

What is the mode of reproduction for zooflagellates?

Zooflagellates reproduce primarily through asexual reproduction, specifically binary fission.

What is the main takeaway from the video about zooflagellates?

The main takeaway is that zooflagellates are protozoans with flagella, which can be pathogenic or symbiotic, and they reproduce via binary fission.