Prepare for NEET Biology Sexual Reproduction in Flowering Plants (Pre Fertilization Structure And Events) with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert solutions to examine pollen development, stigma, and pollination.
NEET Questions / Botany / Sexual Reproduction in Flowering Plants / Pre Fertilization Structure And Events
In a particular angiosperm species, the synergids exhibit a unique filiform apparatus oriented away from the micropyle. What would be the MOST likely consequence of this unusual arrangement?
Enhanced pollen tube attraction
Faster pollen tube growth
Reduced fertilization success
Increased seed production
A mutation affects the tapetum in a developing anther, leading to premature degeneration of this tissue. What is the MOST likely direct consequence of this mutation?
Increased production of viable pollen grains.
Enhanced pollen germination rates.
Defective pollen wall formation and reduced pollen viability.
Accelerated development of the microspore mother cells.
Which of the following combinations of floral characteristics would MOST effectively promote cross-pollination?
Monoecy, self-compatibility, and homogamy
Dioecy, self-incompatibility, and protandry
Cleistogamy, self-compatibility, and protogyny
Hermaphroditism, self-compatibility, and synchronized pollen and stigma maturity
If pollen grains are transferred from the anther of a flower on one plant to the stigma of a flower on a genetically different plant of the same species, this process is termed:
Xenogamy
Geitonogamy
Autogamy
Cleistogamy
Which of the following pairs of plant families is known for pollen viability extending for several months post-release, impacting breeding strategies?
Rosaceae and Liliaceae
Leguminosae and Fabaceae
Poaceae and Solanaceae
Asteraceae and Brassicaceae
The colorful and fragrant flowers of water hyacinth and water lily are adaptations to attract which type of pollinator?
Birds
Bats
Insects
Wind
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
If a plant species has flowers with a single ovule per ovary arranged in an inflorescence, it is MOST likely adapted for pollination by:
Wind
Bees
Butterflies
Hummingbirds
Which of the following plant strategies utilizes attractants and rewards to ensure reproductive success?
Seed dispersal by wind
Vegetative propagation
Pollination by attracting pollinators
Self-fertilization
If a plant species loses its ability to produce floral attractants and rewards, which process would be most directly affected?
Photosynthesis
Transpiration
Pollination
Seed germination
