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प्रश्न
Distinguish between Aves and Mammalia.
उत्तर
| Aves | Mammalia | |
| 1. | Mammary glands are absent. | Mammary glands are present. |
| 2. | They are completely adapted for aerial life. | They are mostly terrestrial animals with some exceptions like dolphin, bat, etc. |
| 3. | Body is divided into head, neck and trunk. | Body is divided into head, neck, trunk and tail. |
| 4. | Exoskeleton is present in the form of feathers. | Exoskeleton is present in the form of hairs or fur. |
| 5. | Digits are covered with scales and bear claws. | Digits are provided with nails, claws or hooves. |
| 6. | e.g. Peacock, penguin, parrot, pigeon, duck. etc. | e.g. Elephant, human, kangaroo, dolphin, bat, etc. |
संबंधित प्रश्न
What is the primary characteristic on which the first division of organisms is made?
On what basis are plants and animals put into different categories?
Which organisms are called primitive and how are they different from the so-called advanced organisms?
Characters of a phylum are given below. Read those carefully and answer the questions.
a. Spines of calcium carbonate are present on the body.
b. These animals are exclusively marine.
c. They perform the locomotion with the help of tube feet.
d. Their skeleton is made up of calcareous plates or spicules.
i. Animals of which phylum show the above characters?
ii. Give an example from that phylum.
iii. These animals can be classified with the help of which criteria of new system of animals classification?
Track the changes in methods of animal classification. How the methods of animal classification changed over the time?
Write any two points of differences between flat worms and round worms.
What is the need for classification?
What is basis of classification?
Describe the characteristics used in hierarchial classification of organisms.
Briefly describe the importance of classification.
State the merits of Whittaker’s method of classification.
Give advantages of classification of animals.
What is classification?
Write the levels of classification.
Elephantiasis is caused by
Skeleton is made entirely of cartilage in
Complete the following conceptual picture.
Complete the flow chart.
