Question: Mode of pollination in maize is
Options:
Self-pollination
Vegetative propagation
Cross-pollination
None
🔑Key Points:
Cross-pollination
-Maize utilizes cross-pollination to fertilize the ovum.
-It is also called Heterogamy.
-In this mode, the pollens of another flower fertilize the ovum.
-The plant uses insect or abiotic carriers like the wind to spread the pollen.
-It is a common method of fertilization in angiosperm or gymnosperm.
-In maize, the male gametes (pollens) and female gametes (ovum) mature at different times.
-The development growth of male and female gametes at different times avoids any self-pollination.
-It helps maize increase the genetic variability in developing kernels.
• 🛑Additional Information:
Cleistogamy
-It is an example of self-pollination.
-It is a method in which plants use closed, self-pollinating blooms.
-Particularly renowned for peanuts, peas, and pansies.
-This habit is especially prevalent in grasses.
Self-pollination
-Self-pollination happens in the two methods described below.
-An egg cell inside a flower's ovule may be fertilized by a sperm cell from a pollen grain produced by the same bloom.
-Another flower on the same plant can also fertilize it.
-The technique does not affect genetic variation.
-It causes the plants to produce inbred strains.
Chasmogamy
-It is a reproductive technique in which chasmogamous flowers are pollinated.
-Chasmogamous flowers often have
-colorful petals
-open petals surrounding the reproductive organs
-Reproductive organs are exposed.
-Chasmogamous translates to "open marriage" in Greek, derived from the open arrangement of flower structures.