(a) In which two ways are amphibians differed from fishes ? (b) Identify the phylum of organisms having the following characteristics. (i) Pore bearing animals and radial symmetry. (ii) Body spiny and radial symmetry

(a) In which two ways are amphibians differed from fishes ?
(b) Identify the phylum of organisms having the following characteristics.
(i) Pore bearing animals and radial symmetry.
(ii) Body spiny and radial symmetry.
© Why gymnosperms do not require water for
fertilization ?

(a) (i) Amphibians have a three chambered heart but fishes have a two chambered heart.
(ii) Amphibians respire by lungs on land but fishes by gills.
(b) (i) Porifera
(ii) Echinodermata
© Pollination occurs by wind.