................ being a higher category, is the assemblage of families which exhibit a few similar characters.
Order
Species
Genus
Class
A.
Order
In animals like Annelids, Molluscs, organs have associated to form functional systems, each system concerned with a specific physiological function. This pattern is called ________ system level of organization.
organ
open
closed
coelom
Sycon (Scypha), Spongilla (Fresh water sponge) and Euspongia (Bath sponge) are examples of which Phylum?
Coelenterata
Platyhelminthes
Ctenophora
Porifera
A healthy adult man has, on an average, ............ (in millions) of RBC mm-3 of blood.
5 - 5.5
4 - 4.5
3 - 3.5
6 - 6.5
Animals in which the cells are arranged in two embryonic layers are called ________.
Diploblastic
Extoderm
Tripoblastic
Endoderm
A multicellular organism grows by ..............
cell addition
cell explosion
cell implosion
cell division
............. influences are the rate of weathering and humus in soil formation.
Flora & Fauna
Time
Parent rock
Climate