Advertisements
Advertisements
प्रश्न
How do chordates differ from non-chordates?
Advertisements
उत्तर
| CHORDATES | NON-CHORDATES |
| Notochord is found in all stages of the life-cycle | Notochord is not found in any stages of the life-cycle. |
| Heart is situated on ventral side of the alimentary canal. | Heart is poorly formed and if present it is situated on the dorsal side. |
| Nervous system is situated on the dorsal side | Nervous system is situated on the ventral side. |
| RBCs are present in blood. | RBCs are absent in blood. |
APPEARS IN
संबंधित प्रश्न
Give two examples of Coelenterates:
Give two examples of Arthropods:
Write one difference between the following pair:
Platyheminthes and Nematoda
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 |
Differentiate between
warm-blooded and cold-blooded animals.
State if the following statement is true or false. Correct the statement if it is false.
A tapeworm is a flatworm that lives in the human intestine.
State if the following statement is true or false. Correct the statement if it is false.
Reptiles have a scaly skin. They lay eggs with a hard shell and are warm-blooded animals.
Write a short answer.
What do you mean by the radially symmetrical body?
Bones with air cavities ate seen in ______.
What is the name of the bone which is filled with air?
