In which phyla of animals is an open circulatory system found?

Match the following columns:

Column-$I$	Column-$II$
$(a)$ Amphibia	$(1)$ Air bladder
$(b)$ Mammalia	$(2)$ Cartilaginous notochord
$(c)$ Chondrichthyes	$(3)$ Mammary gland
$(d)$ Osteichthyes	$(4)$ Pneumatic bones
$(e)$ Cyclostomata	$(5)$ Dual habitat
$(f)$ Aves	$(6)$ Jawless,circular,sucking mouth

Match the animals of Column $I$ with their respective classes in Column $II$ and choose the correct answer.

Column $I$	Column $II$
$A$. Aptenodytes	$p$. Aves
$B$. Hemidactylus	$s$. Reptilia
$C$. Carcharodon	$q$. Chondrichthyes
$D$. Pteropus	$r$. Mammalia

Select the code for the correct answer from the options given below.

Which kingdom consists of organisms that are multicellular,aquatic or terrestrial,heterotrophic,and eukaryotic?

Which of the following are correctly matched with respect to their taxonomic classification?

Select the incorrect option with respect to the features present in the three phyla: Arthropoda,Mollusca,and Chordata.