Lecture 1: Basis of classification ; Classification of animals: phylum porifera, coelenterata, ctenophora, platyhelminthes

Comment upon the habitats and external features of animals belonging
to class, amphibia and reptilia.

What is the relationship between germinal layers and the formation of
body cavity in case of coelomate, acoelomates and pseudocoetomates?

Give three major differences between chordates and non-chordates and
draw a schematic sketch of a chordate showing those features.

Excretory organs of different animals are given below. Choose correctly
and write in the space provided.
Animal Excetory Organ/Unit
a. Balanoglossus                                                 i. Metanephridia
b. Leech                                                              ii. Nephridia
c. Locust                                                            iii. Flame cells
d. Liver fluke                                                   iv. absent
e. Sea urchin                                                    v. malpighian tubule
f. Pila                                                           vi. Proboscis gland
a. ____________________, b. ____________________, c. ____________________
d. ____________________, e. ____________________, f. ____________________

Menion two modifications in reptiles required for terrestrial mode of life.

Differentiate between flightless & flying birds.

Assign the phylum to which following animals belongs – pheretima &
sponge

Members of which phylum are known as “segmented worm” Write about
their body symmetry, mode of excretion & respiration.

Name a free living & a parasitic Platyhelminths