FREE NEET Biology Practice MCQ Test: Strategies For Enhancement In Food Production Exercise 3 Questions Answers With Detailed Explanations [PDF]

Answer: (d)

Aquaculture involves production of useful aquatic plants and animals such as fishes, prawns, shrimps, lobsters, crabs, molluscs by proper utilization of small and large bodies of water. The production of fishes is called pisciculture. Inland fishery deals with the fishery aspects of waters other than marine water. Marine fishery deals with the fishery aspects of the sea water or ocean.

Answer: (d)

Answer: (d)

From Pinetada vulgaris, pearl is obtained.

Answer: (c)

Answer: (c)

Answer: (d)

Out of the given statements I and II are correct, while III and IV are incorrect. The correct form of these statements is

• Common button mushrooms are a very rich source of vitamin-B
• A rice variety has been developed, by IARI which is rich in iron.

Answer: (d)

Answer: (d)

Answer: (b)

This statement is only correct, while other are incorrect. These can be corrected as

Mating of individuals from entirely different breed is called cross-breeding. It is the method of breeding superior male of one breed with superior female of another breed in order to combine the desirable qualities of two different breeds in the progeny.

Answer: (c)

Followings are the most common products of apiculture include

1. In industry Bees wax used in the preparation of cosmetics and polishes of various kinds.
2. Honey, is supposed as food of high nutritive value and also used in the indigenous systems of medicine.
3. Royal jelly, is the queenbee's extraordinary source of food. It is rich in nutrition values and is believed to be a potent antioxidant.

Answer: (d)

Inbreeding increases homozygosity, i.e, it is a state of possessing two idential alleles, one inherited from each parent. It is necessary if we want to evolve a pureline in any animal. Inbreeding exposes harmful recessive genes that are elimination of less desirable genes.

Answer: (a)

Answer: (d)

Answer: (c)

Cellular totipotency is the technique of regeneration or development of complete plant from explant or cell or tissue of the plant. This technique was established by F. C. Steward and developed the new carrot plant from carrot root culture

Answer: (a)

Jaya and Ratna are two rice varieties developed for green revolution in India.

• The scientific name of Jaya is IET-723. This paddy variety takes about 130 days to grow and the grain is long, bold and white. Its yield is 50-60 quintals per hectare.
• The scientific name of 'Ratna' is IET-1411. It takes about 130-135 days to grow. The grain is long, slender and white. Its yield is 45-50 quintal/hectare.

Answer: (c)

Only statement IV is incorrect. The correct form of this statement is

Germplasm collection is the entire collection of plants or seeds having all the diverse alleles for all genes in a given crop. Rest other statements are correct.

Answer: (d)

Answer: (c)

Meristem is a localized group of cells, which are actively dividing and undifferentiated but ultimately giving rise to permanent tissue. Although the plant is infected with a virus, yet the meristem is free of virus. Therefore, meristem can be removed and grown in vitro to obtain virus free plants. Cultivation of axillary or apical shoot meristems is called meristem culture. The apical or axillary meristems are generally free from virus.

Answer: (b)

Answer: (a)

The method of producing thousands of plants through tissue culture is called micro-propagation. Each of these plants will be genetically identical to the original plant from which they were grown, i.e., they are some clones. Many important food plants like tomato, banana, apple have been produced on commercial scale using this method.