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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.
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
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 controlled breeding program for sheep, a farmer aims to increase both wool yield and meat production. Which breeding strategy is MOST likely to achieve this dual objective, considering potential trade-offs between these traits?
Inbreeding within a single breed known for high wool yield
Crossbreeding with a breed known for high meat production, disregarding wool yield
Crossbreeding with different breeds selected for each trait, followed by selection of offspring with the desired combination
Random mating within a mixed population of sheep
Why is interspecific hybridization often unsuccessful in producing fertile offspring?
Similar chromosome numbers
Identical genetic makeup
Genetic incompatibility leading to meiotic problems
Easy pairing of homologous chromosomes during meiosis
