A geographic locale exhibiting maximum crop plant diversity is identified as__________________?
Show answer Hide answer
Answer: D. Centers of diversity
Explanation
Regions harboring exceptional genetic variation and wild crop ancestors are designated as centers of diversity. Nikolai Vavilov identified these specific geographic locales where crop species originally evolved and diversified. Centers of diversity contain the richest array of wild relatives and primitive landrace cultivars. Genetic diversity is crucial for finding resistance genes against evolving pests and diseases. Wild progenitors found in these centers provide essential traits for modern agricultural breeding programs. Geographic isolation and varied climates often drive the evolution of high plant diversity locally.
Plant explorers travel to centers of diversity to collect germplasm for international gene banks. Conservation efforts prioritize these hotspots to protect endangered wild crop relatives from extinction. Global food security depends on preserving the genetic resources housed within these diverse regions. Genetic diversity describes the variation itself rather than the geographic locale where it peaks. Micro centers represent smaller secondary areas of diversity rather than the primary regional hotspots. Gene sanctuaries are protected conservation areas, whereas centers of diversity are broader geographic regions.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
Related questions
Q1. Anthesis initiates in wheat at__________________?
Show answer Hide answer
Answer: C. 1.15 pm
Anthesis in wheat plants typically peaks during the warm afternoon hours under favorable weather. Observations confirm that flower opening and pollen shedding initiate around one fifteen in the afternoon. Environmental t...
Q2. Anthesis initiates in Allium cepa at___________________?
Show answer Hide answer
Answer: A. 7.00 am
Onion flowers open systematically during the early morning hours when humidity levels remain high. Anthesis in Allium cepa initiates dependably around seven o'clock in the morning daily. Cool morning temperatures stimula...
Q3. Cytoplasmic male sterility is regulated by________________________?
Show answer Hide answer
Answer: B. Plasma genes
Cytoplasmic male sterility is governed strictly by genetic material residing outside the cell nucleus. Mitochondrial DNA mutations control this reproductive trait, which is why it is inherited maternally. Plasma genes lo...
Q4. The mechanical condition of soil favorable for vegetative growth is termed___________________?
Show answer Hide answer
Answer: C. Tilth
Tilth defines the physical and mechanical condition of agricultural soil optimized for plant growth. Good tilth provides an ideal balance of soil aeration, moisture retention, and structural stability. Tillage practices...
Q5. Oxidative alongside condensation pathways resembling irradiation-induced non-browning have been detected in__________________?
Show answer Hide answer
Answer: B. Carbohydrates
Carbohydrates undergo complex oxidative and condensation reactions during non-enzymatic browning processes. Similar chemical pathways occur when food products are subjected to controlled irradiation treatments. Sugar deg...
Q6. Allogamy receives encouragement from____________________?
Show answer Hide answer
Answer: D. All the above
Allogamy is naturally encouraged by various floral adaptations that prevent self-fertilization entirely. Male sterility, dichogamy, and herkogamy all act as effective barriers against unwanted inbreeding. These evolution...