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
Explain how animals in Vertebrata are classified into further subgroups.
Tick (✓) the appropriate answer:
Scientist who introduced binomial nomenclature is
What is difference between bilateral symmetry and radial symmetry?
Write down four characters of Chondrichtyes. Give two examples.
Write down four characters of mammals. Give two examples.
Describe some flight adaptations of the birds.
Explain the general charaters of phylum Mollusca. Give one example of following classes of Mollusca;
(i) Gastropoda;
(ii) Pelecypoda;
(iii) Cephalopoda.
Explain the general characters of phylum Arthropoda. Give one example of following classes
(i) Crustacea;
(ii) Myriapoda;
(iii) Insecta;
(iv) Arachnida.
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 _____________
What are the group names of the following categories of animals?
Animals with three pairs of legs ___________
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Grasshopper-Wings, trachea, proboscis
Write two main characters of the following animal and name the phylum it belongs to: Whale
Give the name of two animals that belong to phylum echinodermata.
Choose the correct answer: Which of the following is not a helminth parasite?
Choose the correct answer: Multicellular producers are
Choose the correct answer: Binomial Nomenclature was proposed by
Kingdom Animalia is characterized by
Assertion (A): All vertebrates are chordates but all chordates are not vertebrate.
Reason (R): The members of subphylum vertebrata possess notochord, during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults.
In the light of the above statements, choose the correct answer from the options given below:
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:
