Strategies for Enhancement in Food Production - Practice Questions with Answers
76 free MCQs on Strategies for Enhancement in Food Production, each with its own worked answer and explanation. Learn about animal husbandry, plant breeding, tissue culture, biofortification, and single cell protein.
76 practice questions on Strategies for Enhancement in Food Production, sorted Easy → Hard. Try each one first, then open its answer page for the worked explanation. Want the full theory first? Read the Strategies for Enhancement in Food Production notes.
Different fish species occupy different feeding depths in the same pond without competing for food: Catla feeds near the surface, Rohu in the middle zone, and Mrigal or common carp at the bottom - letting a single pond support far more total fish than one species alone.
Easy - 25 questions
Q1.
Inbreeding depression in animal breeding refers to the:
A Reduced fertility and productivity on inbreeding
A plant breeder collects seeds of all wild relatives and local varieties of a crop before starting a programme. The entire collection of this genetic diversity is called the:
Which of the following statements about totipotency is most scientifically precise?
A Mainly specialized meristematic cells located at the shoot apex are capable of exhibiting genuine totipotency in plants under usual circumstances
B Every living plant cell has the genetic information to develop into a whole organism, as demonstrated by F.C. Steward with carrot phloem cells
C Totipotency is restricted mainly to undifferentiated embryonic cells and is rarely artificially induced in mature tissue according to most researchers
D Totipotency generally requires both auxin and cytokinin to be present in roughly balanced concentrations over time in the majority of cases studied
What distinguishes capture fishery from culture fishery in terms of resource management?
A Capture fishery is mainly restricted to freshwater resources while culture fishery is mainly restricted to marine resources as widely reported
B Capture fishery involves harvesting fish from natural water bodies while culture fishery involves controlled rearing of fish in managed environments
C Capture fishery generally yields more total production per unit area than culture fishery in most observed cases in standard practice under most conditions encountered
D Capture fishery mainly relies on polyculture methods while culture fishery generally uses monoculture techniques instead as frequently observed in practice
Why does polyploidy often result in larger plant organs and potential seedlessness in some crops?
A Polyploid plant cells generally contain a greater overall number of mitochondria, generating somewhat more growth energy overall in many documented cases
B Having multiple chromosome sets often increases cell size and metabolic activity; odd-ploidy plants cannot form viable gametes, resulting in seedlessness
C Polyploidy specifically activates otherwise largely dormant genes that subsequently produce additional plant growth hormones according to conventional understanding
D Polyploid plants characteristically develop noticeably thicker cell walls that retain somewhat more water, enlarging organs gradually in routine practice
What is the significance of using shoot apical meristems rather than leaf or root explants for producing virus-free plants?
A Shoot meristem tissue generally grows measurably faster when placed in culture medium than other available tissues overall in most cases under typical conditions
B Shoot apical meristems are typically free of viruses as viruses spread through vascular tissue which has not yet differentiated in the meristem
C Meristem cells alone are sometimes understood to possess totipotency, a property that ordinary leaf cells largely lack overall according to standard textbooks
D Shoot meristems are known to generate a considerably greater amount of callus tissue than other types of explant material in general practice
What is the key difference between an interspecific hybrid and a somatic hybrid in plant breeding?
A Interspecific hybrids generally come from crossing two different varieties of the exact same species, unlike true somatic hybrid plants as frequently described in most textbook accounts
B Interspecific hybrids result from sexual crossing between two different species while somatic hybrids are produced by protoplast fusion bypassing sexual incompatibility barriers
C Interspecific hybrids can mainly be produced under sterile in vitro laboratory conditions, whereas somatic hybrids often form outdoors during normal conditions as generally observed
D There is sometimes thought to be no real meaningful difference, since both processes yield the exact same type of hybrid plant in typical laboratory settings under usual circumstances
In apiculture, the queen bee differs from worker bees primarily in that:
A The queen bee alone is sometimes thought to possess largely functional wings while worker bees remain largely wingless during normal conditions
B The queen develops from a fertilized egg fed exclusively on royal jelly throughout its larval period, making it reproductively complete
C The queen bee herself is sometimes thought to be diploid while all the worker bees in the colony are instead largely haploid in most cases
D The queen is sometimes thought to develop via parthenogenesis while worker bees instead develop from separately fertilized eggs under typical conditions
How does SCP from Spirulina help address global food security challenges more sustainably than conventional protein sources?
A It generally requires large areas of fertile agricultural land, placing it in noticeable competition with conventional food crops according to most researchers in the majority of cases studied
B It can be grown on waste water using non-agricultural substrates, has a very short generation time, and yields protein per unit area far exceeding conventional crops or livestock
C It mainly supplies a genuinely complete dietary protein profile when combined with several other separate food sources as widely reported in standard practice under most conditions encountered
D It fundamentally depends on fairly expensive technology that consequently remains largely inaccessible to many developing nations as frequently observed in practice in many documented cases
Which of the following best explains why crossbreeding exotic and indigenous cattle breeds is preferred in tropical dairy farming?
A Purebred exotic cattle breeds alone consistently provide the absolute maximum milk yield under every possible climatic condition as widely reported
B Crossbreeding combines the high milk yield traits of exotic breeds with the disease resistance, heat tolerance, and adaptability of indigenous breeds
C Purebred indigenous cattle breeds actually produce considerably more milk than exotic breeds do under typical tropical farming conditions in standard practice
D Crossbreeding programs are undertaken mainly and primarily to produce drought-resistant draft animals suited for heavy farm labor under most conditions encountered
What is the significance of floriculture in the context of beekeeping?
A Floriculture plants are used by beekeepers mainly as a direct food source specifically intended for developing bee larvae alone as commonly observed in practice in many documented cases
B The proximity of bee colonies to flowering crops in floriculture ensures pollination of plants and simultaneously increases honey production from abundant nectar sources
C Floriculture operations supply medicinal herbs that beekeepers subsequently add directly into honey during its later processing according to conventional understanding
D Floriculture crops are routinely harvested specifically to supply structural building material used in constructing wooden beehives in routine practice overall in most cases
What distinguishes a mutualistic crop-pest resistance breeding approach from chemical pest control in terms of long-term sustainability?
A Pest-resistant crop varieties actually require progressively greater chemical input over successive growing seasons as resistance breaks down under typical conditions according to standard textbooks
B Breeding pest-resistant varieties provides durable, heritable resistance that reduces chemical input dependency, though it requires longer development time compared to pesticide application
C Chemical pest control methods are generally preferred by farmers since resistant crop varieties tend to reduce overall field biodiversity in general practice as commonly described in most textbook accounts
D Pest-resistant crop varieties are invariably and consistently far more expensive for breeders to develop than equivalent pesticide programs during normal conditions as generally observed
Why is regeneration from callus considered an indirect organogenesis pathway compared to direct organogenesis from an explant?
A Callus-mediated regeneration usually and invariably produces polyploid plants while direct organogenesis instead produces mainly diploid plants in typical laboratory settings under usual circumstances
B Callus regeneration involves an intermediate dedifferentiated (unorganized) phase before redifferentiation, allowing somaclonal variation; direct organogenesis maintains tissue organization throughout
C Callus tissue culture generally proceeds considerably faster and resists microbial contamination noticeably better than direct organogenesis does according to most researchers in the majority of cases studied
D Direct organogenesis methods require a considerably more chemically complex growth medium formulation than callus-mediated regeneration needs as widely reported in standard practice under most conditions encountered