Biology
- Three Domains - Detailed Description
Bacteria (eubacteria) Archaea Eukarya Most bacteria (formerly monerans) Methanogens Protista Thermophiles Fungi Halophiles Animalia Plantae FEATURE ...
- Comparison Between Male Cockroach And Female Cockroach (periplaneta Americana)
Male cockroach Female cockroach 1. Larger in size Smaller in size 2. Narrow abdomen Broad abdomen 3. Anal styles present Absent 4. ...
- Comparison Between Vertebrates And Invertebrates
Vertebrates Invertebrates 1. Notochord is present in the embryo and vertebral column in the adult Notochord and vertebral column are absent in embryo and adult 2. Gill...
- Comparison Between Chordates And Non-chordates
Chordates Non-chordates 1. Notochord is present at least in some stage of life cycle Notochord is absent 2. Nerve cord is non-ganglionated, single, dorsal...
- Amazing General Facts About Birds
About 9000 species of birds are present all over the world Birds are the Best fliers. There are about 100 billion birds in the world.The only one group of animals having feathers is birds (Aves). Feathers of most of the birds are...
Biology
Comparison between flying birds and flightless birds
| Flying birds (Carinatae) | Flightless birds (Ratitae) |
| 1. Usually small in size | Usually large in size |
| 2. Well developed wings | Poorly developed wings |
| 3. Interlocking mechanism in feathers is present | Absent |
| 4. Tail quills are present | Absent |
| 5. Oil gland is present | Absent |
| 6. Well developed flight muscles | Reduced fight muscles |
| 7. Keel is present in breast bone | Absent |
| 8. Short legs | Long and stout legs |
| 9. Copulatory organ is absent in males | Present |
| 10. The young are naked without feathers (altricious) | The young are with feathers (precocious) |
| 11. Cosmopolitan distribution (found everywhere) | Discontinuous distribution |
| 12. E.g. Crow, Columba, Parrot etc | Struthio, Kiwi, Penguine etc |
- Three Domains - Detailed Description
Bacteria (eubacteria) Archaea Eukarya Most bacteria (formerly monerans) Methanogens Protista Thermophiles Fungi Halophiles Animalia Plantae FEATURE ...
- Comparison Between Male Cockroach And Female Cockroach (periplaneta Americana)
Male cockroach Female cockroach 1. Larger in size Smaller in size 2. Narrow abdomen Broad abdomen 3. Anal styles present Absent 4. ...
- Comparison Between Vertebrates And Invertebrates
Vertebrates Invertebrates 1. Notochord is present in the embryo and vertebral column in the adult Notochord and vertebral column are absent in embryo and adult 2. Gill...
- Comparison Between Chordates And Non-chordates
Chordates Non-chordates 1. Notochord is present at least in some stage of life cycle Notochord is absent 2. Nerve cord is non-ganglionated, single, dorsal...
- Amazing General Facts About Birds
About 9000 species of birds are present all over the world Birds are the Best fliers. There are about 100 billion birds in the world.The only one group of animals having feathers is birds (Aves). Feathers of most of the birds are...