Advertisements
Advertisements
Question
Write down four main characters of chordates.
Advertisements
Solution
Main characteristics of chordates:
(i) They have a dorsal, hollow, tubular nerve cord.
(ii) Notochord is present that is ventral to the nerve cord.
(iii) They possess paired gill-slits in the pharynx.
(iv) They have a ventral heart with dorsal and ventral blood vessels and closed blood vascular system.
Examples: Salpa and Herdmania.
APPEARS IN
RELATED QUESTIONS
What are the differences between animals belonging to the Aves group and those in the mammalia group?
What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?
Prepare a list of some animals that are found parasitic on human beings.
What is difference between bilateral symmetry and radial symmetry?
What do you mean by the term coelomate animals?
Give four general characters of phylum Mollusca.
Explain general characteristics of phylum Platyhelminthes.
Describe the important characters of mammals.
What are pisces? Classify and explain two different kinds of fishes by the help of suitable examples.
The animals (Kingdom Animalia) are mainly grouped under two categories
Give any one difference between the following :
Flatworm and Roundworm
Match the names of animal groups in Column I with the names of animals in column II.
|
Column I (Group) |
Column II (Animals) |
|
Annelida |
Pigeon |
|
Porifera |
Snake |
|
Mollusca |
Earthworm |
|
Reptilia |
Sponge |
|
Amphibia |
Octopus |
|
Pisces |
Trout |
|
Mammal |
Rabbit |
Which names are left out that do not match and why?
Write two main characters of the following animal and name the phylum it belongs to: Whale
Write the name of oviparous mammal.
Give two examples of each of the following: Arthropoda
Fill in the blanks:
The excretory organs of platyhelminthes are ______.
The binomial name of onion is ______.
Kingdom Animalia is characterized by
Consider the following statements:
- Annelids are true coelomates
- Poriferans are pseudocoelomates
- Aschelminthes are acoelomates
- Platyhelminthes are pseudocoelomates
Choose the correct answer from the options given below:
