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#plant examples

3 public questions tagged with this topic.

Plant Breeding 1

Lantana camara and water hyacinth are examples of:

Lantana camara native to Central and South America introduced into India in 1809 as ornamental shrub for its multicolored corymbs and year-round flowering. Eichhornia similarly introduced as aquatic ornamental. Both escaped cultivation demonstrating characteristics listed by Baker as ideal weeds: rapid asexual proliferation via suckers and stolons, high seed output exceeding 10,000 per plant, dormancy, tolerance to drought and waterlogging, and production of allelopathic secondary metabolites lantadenes and phenolics inhibiting germination of neighboring crops. Dense thickets reduce pasture carrying capacity, harbor disease vectors and increase fire hazard. Biological control attempts using Octotoma championi leaf miner for Lantana and Neochetina weevils for water hyacinth illustrate management challenges, highlighting lesson for careful risk assessment during ornamental introduction. This understanding supports competitive exam preparation for NEET, GATE and CSIR NET concepts linking genotype with phenotype through molecular pathways involving transcription factors, hormones and metabolic enzymes that regulate development, adaptation and reproductive biology in applied breeding programs.

Ref: FAO Invasive Weed Management Lantana; CABI Datasheet Eichhornia and Lantana; BSI Invasive alien plants India.

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Trade Off Grime Triangle

Example of stress-tolerator plant is:

“Mangrove” for example of stress-tolerator plant is. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Life-history traits reflect allocation among growth, maintenance, survival, and reproduction. Energy invested in many offspring cannot simultaneously be invested in large offspring, prolonged care, or future breeding, creating measurable trade-offs. The remaining alternatives—“Water hyacinth”, “Mango”, “Corn”—refer to different states, processes, or scales and therefore do not express the same causal relationship. Survivorship curves summarize age-specific mortality: Type I concentrates loss late in life, Type II approximates a constant hazard, and Type III concentrates loss early. They are empirical patterns, not rigid taxonomic rules. Linking the wording to measurable consequences for fitness, abundance, or flux gives the conclusion its scientific meaning and prevents a purely mnemonic interpretation. Field observations could test this account by measuring the proposed driver and the demographic or ecosystem response while controlling plausible confounding factors.

Ref: Plant Strategies and Vegetation Processes, Grime, 2nd Ed.

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