Answer: Option C. -> Collection and preservation of wild varieties, species and their relatives
:
C
Collection and preservation of all the different wild varieties, species and relatives of the cultivated species is prerequisite for effective exploitation of natural genes available in the populations.

Answer: Option D. -> All of the above
:
D
Continuous inbreeding causes inbreeding depression in which the offsprings produced have reduced fertility, reduced resistance to disease and eventual reduction in productivity. These unfavourable characters can be overcome by methods like outcrossing, artificial breeding and cross breeding.

Answer: Option A. -> Out breeding
:
A
Outbreeding refers to breeding that occurs between different breeds or different species.
Hisardale is a cross breed of sheep developed in Punjab by crossing Bikaneri ewes and Marino rams.
Male and female animals of two different related species are mated. For example : A mule is a cross between a female horse or mare and a male donkey or jack.

Answer: Option A. -> Himagiri
:
A
Himagiri, a wheat cultivar, has been bred for resistance to diseases like leaf and stripe rust, a fungal disease, that causes a rust like layer to appear on the parts affected and the hill bunt disease which is another fungal disease that eats up the entire wheat kernel and fills it with fish odour spores.

Answer: Option B. -> Low nitrogen content
:
B
Biochemical and physiological characteristics such as high aspartic acid, low nitrogen and sugar content leads to pest resistance. For e.g. in maize, the low nitrogen content leads to non-preference by the maize stem borers.

Answer: Option D. -> Animal husbandry is a practice of merely breeding livestock.
:
D
$\bullet$ Animal husbandry is not only the practice of breeding livestock but it is the science of rearing (also includes farm management) and breeding (selection of high yield breeds) of animals.
$\bullet$ Lack of scientific knowledge decreases livestock production and fails to produce disease-resistant varieties of livestock. As a result, diseases can wipe out entire population of livestock in a given area, making it a prime factor that adversely affects livestock and livestock products.

Answer: Option B. -> Vitamin A
:
B
Cod liver oil is extracted from the liver of fishes. It is the main source of Vitamin A but in some species of fishes it can contain C, D and E also.

Answer: Option A. -> Breeding female honey bee - Worker
:
A
Each hive has one queen and 100 female worker bees for every male drone bee. The queen's only job is to lay eggs and a drone's job is to mate with the queen.A worker bee is any female bee that lacks the full reproductive capacity of the colony's queen bee. So option 1 is the wrong option where it says the breeding female honey bee is a worker. Breeding female honey bee is always the queen.

Answer: Option B. -> The seeds cannot be stored under normal conditions for the next season
:
B
Vivipary is the condition whereby the embryo (the young plant within the seed) grows first to break through the seed coat then out of the fruit wall while still attached to the parent plant. It is an undesirable character for annual crop plants because germinated seeds cannot be stored under normal conditions for the next season. Germplasm of the plant cannot be stored in the form of seeds. Germplasm is the living genetic resources such as seeds or tissue that is maintained for the purpose of plant breeding.

Answer: Option D. -> All of the above
:
D
Farm animals have to be well maintained for the following reasons -
(i) prevention of diseases (ii) maintenance of good health (iii) obtaining high quality products. In order to achieve these we have to provide them with clean water along with good quantity and quality of fodder.