Advertisements
Advertisements
Question
Write down four main characters of Platyhelminthes. Give two examples.
Advertisements
Solution
Main characteristics of Platyhelminthes:
(i) Their body is bilaterally symmetrical.
(ii) They are triploblastic animals i.e. their tissues differentiate from three embryonic germ layers.
(iii) Excretory system consists of blind tubules called protonephridia, which bear a tuft of cilia at the end called a flame cell.
(iv) They are hermaphrodites i.e. both male and female reproductive organs occur in the same individual.
Examples: Liver fluke (Fasciola) and blood fluke (Schistosoma).
APPEARS IN
RELATED QUESTIONS
What are the differences between amphibians and reptiles?
What do you mean by the term triploblastic animals? Give two example.
What do you mean by the term coelomate animals? Give two examples.
What are differences between the following :
(a) Cartilaginous fishes and bony fishes ;
(b) Amphibia and Reptilia ;
(c) Aves and mammals.
Distinguish between Nonchordata and Chordata.
Describe general characteristics of phylum Annelida. Give one example each class of Annelida.
Describe the important characters of mammals and birds. Give two examples of each.
What are the group names of the following categories of animals?
Animals with a backbone _____________
Give any one difference between the following :
Insecta and Arachnida
Give four important characters of mammals.
Write the name of a mammal who lives in water.
Give two examples of each of the following: Pisces
Fill in the blanks:
Nephridia are the excretory organs of ______.
Choose the correct answer: Multicellular producers are
Choose the correct answer: Binomial Nomenclature was proposed by
Assertion: Binomial name is the universal name and contains two names.
Reason: It was first introduced by Carolus Linnaeus
What is binomial nomenclature?
Bilaterally symmetrical and acoelomate animal are exemplified by:
