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NEET Questions / Zoology / Strategies for Enhancement in Food Production
A hypothetical organism exhibits a unique life cycle. The diploid sporophyte produces haploid spores through meiosis. These spores develop into a multicellular gametophyte that produces gametes through mitosis. If a mutation occurs in a somatic cell of the sporophyte, which of the following is most likely?
The mutation will be passed on to all gametes.
The mutation will be passed on to some gametes.
The mutation will be passed on to the spores.
The mutation will not be passed on to the gametes.
Which of the following is NOT a characteristic of a stable climax community?
Wide niche specialization
High biomass
Low species diversity
Complex food webs
Consider the following statements regarding the process of decomposition in an ecosystem:
I. Decomposition rate is independent of environmental factors like temperature and moisture.
II. Detritivores play a crucial role in fragmenting organic matter, increasing the surface area for microbial action.
III. Decomposition leads to the release of nutrients back into the ecosystem.
IV. Decomposition only occurs in aerobic conditions.
Which of the above statements are correct?
I and II only
II and III only
I, III and IV only
II, III and IV only
A species of beetle exhibits aposematic coloration. This coloration is MOST likely an adaptation to:
Attract mates
Camouflage itself from predators
Warn predators of its toxicity
Enhance its ability to thermoregulate
Which of the following factors does NOT contribute significantly to the process of speciation?
Geographic isolation
Reproductive isolation
Genetic drift
Random mating within a population
A breeder is trying to develop a new variety of wheat resistant to a specific fungal pathogen. They have identified a wild relative of wheat that exhibits resistance but has poor yield. Which breeding strategy is MOST likely to introduce the resistance gene into the high-yielding cultivated variety while minimizing the transfer of undesirable traits from the wild relative?
Mass selection
Pedigree analysis
Backcross breeding
Mutation breeding
Somatic hybridization is a powerful tool in plant breeding. However, it faces certain limitations. Which of the following is NOT a typical limitation of somatic hybridization?
Regeneration of hybrid plants can be difficult
Protoplast fusion may be random and unpredictable
Requirement for homozygous parental lines
Cytoplasmic incompatibility may occur
Which breeding method is MOST suitable for improving the protein content of a crop variety that already possesses high yield and disease resistance but suffers from low protein?
Outcrossing
Mass selection
Mutation breeding
Hybridization followed by backcrossing
In a breeding program aiming to develop a new variety of rice with increased grain size and resistance to a particular bacterial blight, which combination of breeding techniques would be MOST effective?
Mass selection followed by selfing
Mutation breeding followed by pureline selection
Hybridization followed by marker-assisted selection
Clonal selection followed by outcrossing
