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प्रश्न
Fill in the blank.
Fishes obtain oxygen from water through ......................
उत्तर
Fishes obtain oxygen from water through gills.
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संबंधित प्रश्न
Give two examples of Arthropods:
Match the following.
| Group | Characteristics | ||
| 1. | Molluscs | a. | Feed milk to young ones, warm-blooded |
| 2. | Spongers | b. | bag-like body with tentacles around the opening |
| 3. | Flatworms | c. | fins, gills and cold-blooded |
| 4. | mammals | d. | body with large opening and many small pores all over |
| 5. | Fish | e. | jointed legs, exoskeleton |
| 6. | cnidarians | f. | have only one opening |
| 7. | arthropods | g. | hard shell, soft body |
| h. | cylindrical, unsegmented body with mouth at one end and anus at the posterior end |
Answer in detail.
Write two characteristics of birds.
Answer in detail.
List four characteristics of reptiles.
Classify the given animals into different categories indicated.
Jellyfish, liver fluke, pinworm, Ascaris, tapeworm, Hydra, sea anemone into cnidarians, Platyhelminthes, and Nemathelminthes.
Which ones of the following animals are invertebrates?
Housefly, Silverfish, Trout, Jellyfish, Whale, Penguin, Lizard and Sponge
Mention any one major similarity and one major difference in the following pairs of an animal:
Bat and Pigeon
How do chordates differ from non-chordates?
In mammals, the testis is enclosed by ______.
Why is the crocodile unique among reptiles?
