A flower exhibiting cleistogamy, but with viable pollen grains, fails to produce seeds. Which of the following is the LEAST likely explanation for this observation?
Lack of pollinating agents
Failure of pollen tube growth
Non-functional stigma
Problems with fertilization
Related Questions
Apart from the Yucca plant and Yucca moth, provide another example of an obligate mutualistic relationship found in nature.
Fig and Fig wasp
Lion and Zebra
Shark and Remora
Human and Mosquito
If the Yucca moth population were to drastically decline, what would be the most likely impact on the Yucca plant population?
Increase in Yucca plant population
No impact on Yucca plant population
Decline in Yucca plant population
Increased genetic diversity in Yucca plants
