Weed Identification
This question requires identifying which of the listed plants is considered a weed.
Plant Analysis
- Oryza sativa: Commonly known as rice, this is a staple cereal crop.
- Vigna unguiculata: This is the cowpea, an important legume crop cultivated for its beans and leaves.
- Cyperus rotundus: Known as Purple Nutsedge or Galingale, this species is a highly invasive and troublesome weed found globally in various agricultural and natural ecosystems.
- Pisum sativum: This is the garden pea, a widely cultivated vegetable crop.
Conclusion
Among the options provided, Cyperus rotundus is recognized as a weed due to its invasive nature and negative impact on crop yields, unlike the other options which are cultivated plants.
Important Questions from Botany
One advantage of sexual reproduction over asexual reproduction is that it helps species to survive over long evolutionary time. This is because sexual reproduction produces :
During a laboratory experiment, a student immerses epidermal leaf peel in a hypertonic solution. After some time, the student examined the cells under a microscope and observed that:
The breakdown of glucose in cytoplasm results in the formation of
After fertilization, the fruit and the seed are produced by
- Which one of the following groups is called 'amphibians of plant kingdom'?
