Advertisements
Advertisements
प्रश्न
Answer in detail.
Name the different classes of arthropods. Write one characteristic feature of each class.
Advertisements
उत्तर
Arthropods are invertebrates with jointed legs, a segmented body, and a bilaterally symmetrical body that is divided into head, thorax, and abdomen.
Anthropods are further classified into –
- Arachnids – They have fused head and thorax, four pairs of legs, hard exoskeleton, no wings, and antennae. Examples: Scorpions and spiders.
- Crustaceans – They have fused head and thorax, appendages on all segments, a variable number of jointed legs, and two pairs of antennae extending from the head. Examples: lobsters and sprimps.
- Myriapods – Body divided into a large number of segments and have two pairs of legs per segment (example: millipede) or one pair of legs per segment (Example: centipede). The number of legs may vary from 20 to 200.
- Insects – Their body is divided into head, thorax, and abdomen. They have three pairs of legs, two pairs of wings (some have one pair or none), and a pair of antennae. Examples: ants and butterflies.
APPEARS IN
संबंधित प्रश्न
Name one example of the animal which shows the following characteristics:
Can live in water as well as on land:
Categorize the following animals under their appropriate columns of classification
| Animals | ||||
| Dog | Grasshopper | Rat | Scorpin | Toad |
| Butterfly | Lizzard | Turtle | Frog | Bat |
| Snail | Honey bee | Pigeon | Liverfluke | Leech |
| Cattle | snake | Rohu | Parrot | Ascaris |
| Earthworm | Cow | Rabbit | Monkey | Elephant |
|
Classification: |
||||
| Worms | Molluscs | Fishes | Amphibians | Reptiles |
| Birds | Mammals |
Answer in detail.
Write two characteristics of amphibians.
Answer in detail.
How do fish exchange gases?
Given below are groups of animals, and their characteristics features. Some of the features are incorrect. Identify the odd one out in each.
| Group | Characteristic features | Odd one out |
| Porifera | porous animals, have tentacles, fixed to surface | |
| Amphibia | cold-blooded, lungs in adults, scaly skin | |
| Aves | cold-blooded, wings, feathers, bones with large air spaces | |
| Pisces | live in water, scaly skin warm-blooded, fins for swimming |
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Pigeon - Feathers, wings, hair
How do chordates differ from non-chordates?
Write zoological names of earthworm.
Which group of animals have following characteristics: Body soft, covered by mantle and a calcareous shell.
On the basis of the position of the notochord, classify the different prochordates. Justify your answer.
