Amphibia

Fill up the black spaces appropriately {:("Phylum/Class","Excretory Organ","Circulatory Organ","Respiratiry Organ",),("Arthropoda",,,"Lungs/Gills/Tracheal System",),(,"Nephridia","Closed","Skin/Parapodia",),(,"Metanephridia","Open",,),("Amphibia",,"Closed","Lung",):}

Phylums and related characteristics are given below . Choose an appropriate option which fills the blank spaces . {:("PHYLUM/CLASS","EXCRETORY ORGANS","CIRULATORY ORGANS","RESPIRATORY ORGANS"),("1 Arthropoda",A,"Open","Trachae"),("2 B","Metanephridia","Open","Gills"),("3 Amphibia",C,"Closed",D):}

Whicxh of the following statements are correct about the class-Amphibia? I. They are the most primitive and earliest tetrapods with two pairs of limbs. II. Their skin is rich in multlecellular mucous and poison glands. III. The brain is well-developed with 12 pairs of cranial nerves. IV. Gaseous exhange occurs always by skin or lungs. V. RBCs ar nucleated and biconvex.

Read the following four statements ( I - IV ) : I. In birds , the skin is dry without any glands except the preen glands which are modified sudorific glands . II. All mammals exclusively respire by using lungs , except dolphins. III. Chameleon is a tree lizard with a prehensile tall and independently movable eyes. IV. Amphibia is the only tetrapod vertebrate which has external fertilisation with no larval stage in their life cycle . How many statements is / are correct form the above ?

Match column I with column II and select the correct option form the given codes. {:(,"Column I",,"Column II"),("A.","Amphibia",("i"),"Air bladder"),("B.","Mammals",("ii"),"Cartilaginous notochord"),("C.","Chondrichthyes",("iii"),"Mammary glands"),("D.","Osteichthyes",("iv"),"Pneumatic bones"),("E.","Cyclostomata",("v"),"Dual habitat"),("F.","Aves",("vi"),"Sucking and circular mouth without jaws"):}

Match column I with column II and select the correct option from the given codes. {:(,"Column I",,"Column II"),(A.,"Protochordata",(i),"Delphinus"),(B.,"Limbless amphibia",(ii),"Myxine"),(C.,"Oviparous mammal",(iii),"Ornithorhynchus"),(D.,"Aquatic mammal",(iv),"Doliolum"),(E.,"Jawless vertebrate",(v),"Ichthyophis"):}

Read the following four statements (I - IV) I. All mammals exclusively respire by using lungs except Balaenoptera. II. In Aves, the skin is dry without any glands except the sudorific gland at the base of the tail. III. Chameleon is a camouflaged tree lizard with a prehensile tail. IV. Amphibia is the only tetrapod vertebrate which has external fertilization with indirect development . How many statement is / are correct from the above ?