Advertisements
Advertisements
Question
Fill in the blank.
.................. do not have a backbone, while vertebrates have it.
Advertisements
Solution
Invertebrates do not have a backbone, while vertebrates have it.
APPEARS IN
RELATED QUESTIONS
Fill in the blank.
Annelids have special organs of excretion called ..............
Fill in the blank.
...................... live in the digestive tract of many vertebrates including human beings.
Fill in the blank.
A ................. has an external coiled shell.
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 |
Write a short answer.
Give two examples of Platyhelminthes.
Classify the given animals into different categories indicated.
Jellyfish, liver fluke, pinworm, Ascaris, tapeworm, Hydra, sea anemone into cnidarians, Platyhelminthes, and Nemathelminthes.
Mention any one major similarity and one major difference in the following pairs of an animal:
Cuttlefish and Dogfish
Which group of animals have following characteristics: Body soft, covered by mantle and a calcareous shell.
Animals that possess notochord are called ______.
In mammals, the testis is enclosed by ______.
