Advertisements
Advertisements
प्रश्न
Answer the following question.
Fish and frog can respire in water. Can they respire through their skin? If yes, why do they have gills?
Advertisements
उत्तर
- Yes, fishes and frogs can respire through their skin.
- The larval stage of frog i. e. tadpole respires through gills. During metamorphosis, tadpoles lose their gills and develop lungs.
- Frogs do not have scales and breathe through their skin underwater.
- Fishes respire primarily via gills. The body of fishes is covered with scales which limits cutaneous respiration in them.
APPEARS IN
संबंधित प्रश्न
Choose the correct option.
In Ascaris, ___________.
Answer the following question.
Pinna is part of the external ear and it is found in mammals. Do aves and reptiles show external ear in any form?
Answer the following question.
Birds need to keep their body light to help in flying. Hence, they show presence of some organs only on one side. How their skeleton helps in reducing their weight?
Answer the following question.
Sponge and sea star show calcareous protective material. Do they belong to the same Phylum?
Answer the following question.
Lower Phyla like Arthropods and Cnidarians show metamorphosis. Is it also found in any class of Phylum Chordata?
Draw a neat labelled diagram.
Sycon
Draw a neat labelled diagram.
Catla
Draw a neat labelled diagram.
Balanoglossus
Draw a neat labelled diagram.
Scolidon
Identify the animal given in the picture and write features of its phylum/class.
