(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


#1

(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 ?


#2

(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.