Pollination — Types and Agents — Unsolved Practice Set
Chapter: Sexual Reproduction in Flowering Plants | Topic: Pollination Types and Agents
POLLINATION — TYPES AND AGENTS — UNSOLVED PRACTICE SET
Topic: Pollination Types and Agents
Multiple Choice Questions
Q1. Self-pollination between two different flowers of the same plant is called:
- Autogamy
- Geitonogamy
- Xenogamy
- Chasmogamy
Q2. Flowers pollinated by wind usually have:
- Large, colourful petals and nectar
- Light, non-sticky pollen and well-exposed stamens
- Sticky pollen and closed flowers
- Strong fragrance and heavy pollen
Q3. In Vallisneria, pollination is brought about mainly by:
- Wind
- Water
- Bees
- Bats
Q4. Cleistogamous flowers, which never open, ensure:
- Cross-pollination only
- Self-pollination
- Pollination by birds only
- No pollination at all
Q5. The mutualistic relationship in which the Yucca moth pollinates Yucca flowers while laying its eggs in the ovary is an example of:
- Anemophily
- Hydrophily
- Entomophily with obligate mutualism
- Autogamy
Short Answer Questions
Q6. Why do wind-pollinated flowers usually have well-exposed stamens and light pollen, unlike insect-pollinated flowers?
Q7. Give one reason why geitonogamy is considered genetically similar to autogamy, even though it involves two different flowers.
Q8. A student notices bright red, tubular, odourless flowers being visited mainly by sunbirds. What floral feature would you expect these flowers to have to suit bird pollination, and why is fragrance usually absent in such flowers?
Q9. What is cleistogamy, and why does it guarantee seed formation even in the absence of pollinators?
Long Answer Questions
Q10. Explain, with examples, how flowers pollinated by different agents (wind, water, insects) show distinct floral adaptations suited to their respective pollinators.
Q11. Describe the phenomenon of pollination in Vallisneria, mentioning the adaptations of both the male and female flowers that make water pollination successful.
APPLICATION / ANALYSIS
Q12. A farmer notices that his maize field, planted very close to a neighbouring field of a different maize variety, produces cobs with mixed-coloured kernels. Using your understanding of wind pollination, explain how this could have happened.
Q13. During a nature walk, a student observes a flower that closes at dusk and never opens fully, yet consistently sets seed. Which pollination mechanism would you associate with this flower, and what evolutionary advantage might this trait offer under unfavourable pollinator conditions?