Answer: Option A. -> ICZN
:
A
The International Code of Zoological Nomenclature (ICZN) is the set of rules and recommendations used in animal classification. The expansions of the remaining options are as follows:
ICBN - International Code of Botanical Nomenclature
ICVN -International Code of Viral Nomenclature
ICNCP -International Code of Nomenclature for Cultivated Plants

Answer: Option D. -> Italicised or underlined with the first word capitalised
:
D
There are some important rules that must be followed to keep all binomial names standardised:
1. The first letter of the name of the genus should always be capitalised.
2. Species name should not be capitalised.
3. When written, the genus and species names should always be underlined separately; when printed it should be italicised. e.g., Pseudomonas syringae
4. The name or abbreviated name of the scientist describing the species first, should be written after the binomial name. The name is not italicised. e.g., Pseudomonas syringae van Hall
5. The year in which the organism was described should be written after the name of the author or scientist. e.g., Pseudomonas syringae van Hall 1902

:
The sum total of all the chemical reactions occurring in our body is called metabolism. It is a feature of all living organisms, including plants, animals, fungi and microbes. No non-living object exhibits metabolism.

Answer: Option A. -> International Code of Botanical Nomenclature
:
A
The International Code of Botanical Nomenclature (ICBN) is a set of rules regarding the botanical names given to plants. These rules are not the same as those for zoological nomenclature. The order of taxa (in descending order) for plants is thus: kingdom, division, class, series, order, family, tribe, genus, species. There are also specific endings for the names of certain taxa. For instance, the names of divisions would end with "phyta", classes with "ae", and families with "aceae".

Answer: Option D. -> Anthropoidea
:
D
Primates (members of order Primata under the class Mammalia) that have a rounded head and possess facial muscles, such as the human beings, are classified under a sub-order called Anthropoidea.

Answer: Option D. -> All of these
:
D
In biology, "living" has various features such as the abilities growth, reproduction, metabolism, cellular organization of the body and possess consciousness (being aware of self and the surroundings).

Answer: Option A. -> Both A and R are true and R is the correct explanation of A
:
A
In unicellular organisms such as bacteria and amoeba, growth refers to an increase in population size, and not the size of individual cells (as the latter is not very significantly observable). Reproduction too results in an increase in population size. Growth and reproduction can thus, be said to mean the same in this context.

Answer: Option D. -> Species
:
D
Only members belonging to the same species can mate to produce a fertile offspring. This is a defining feature of the taxon species.
Members of the same Family, Order and Class can only produce fertile offsprings if they belong to the same species. And thus, is not a defining characteristic of these taxons.

Answer: Option D. -> They allow ex-situ conservation of germplasm.
:
D
"Ex-situ conservation" is "offsite conservation", and is the process of protecting endangered species of plants and animals by removing them from an unsafe or threatened habitat and placing them in a safer place under the care of humans. Botanical gardens and zoological parks are examples of this. Botanical gardens serve as ex-situ conservation of different plants, to maintain rare and endemic plant species and also to provide recreation and knowledge about plants to common man.

Answer: Option A. -> Stepwise arrangement of all categories for classification of organisms.
:
A
Taxonomic hierarchy refers to the stepwise arrangement of all the categories (taxa) in the classification of organisms. The maintaxa in descending order of hierarchy are: Kingdom, Phylum or Division, Class, Order, Family, Genus, Species.