STD 12 - 12. ecosystem — NEET STD 11 Science — Question

$a$. It holds the different neighbouring cells together.

$b$. It is composed of Mg pectate only.

$c$. It gets dissolved during ripening of fruits.

Correct statements is/are

$(i)$ Each step or rank in hierarchy is called taxonomic category.

$(ii)$ Species is a group of individual organisms with fundamental similarities capable of breeding among themselves.

$(iii)$ Taxonomic studies of all unknown organisms have led to the development of common categories like kingdom, phylum or division, class, order, family, genus and species.

$(iv)$ Lower the category, greater is the difficulty of determining the relationship to other taxa at the same level.