Reproduction Mode in Corn Plants

Ans. A silk is a hair-like structure found on the corn cob. 

• The silk grows from the husk which is a group of leaves attached to the shank.
• Corn silk helps in the growth of corn. 

Ans. There are a total of six nodes present in a corn plant. Five of them are present below the ground and one single node is situated above the ground.

Ans. The characteristics of sexual reproduction are:

• Male and female gametes fuse to reproduce sexually.
• It is a slow process of reproduction.

Ans. The plants that have either a male or a female reproductive organ in a single plant are called dioecious plants. Examples are willow, hemp, ginkgos, etc. 

• Since these plants have only one reproductive organ they cannot fertilize by themselves and need external factors to reproduce. 
• Dioecious plants can reproduce by cross-pollination.

Ans. Androecium and gynoecium are the reproductive parts of a flowering plant.

• Androecium is also called stamen which is the male reproductive part.
• The gynoecium or pistil is the female reproductive part of the plant.

Ans. 

• Hermaphrodites are those plants that have both male and female reproductive parts within the same flower. They can self-pollinate.
• Monoecious plants, on the other hand, have both male and female flowers in the same plant. They cannot self-pollinate. 

Ans. The advantages of dioecious plant reproduction are:

• They have a greater genetic diversity.
• Prevents inbreeding.
• Adaptable to a changing environment.

Ans. Yes, dioecious plant reproduction has some drawbacks:

• These plants require pollinators.
• There is less seed production.
• Farmers face challenges in crop production.

Ans. Since dioecious plants do not have the male and female reproductive organs in the same plant they pollinate via cross-pollination.

• In cross-pollination, pollinators are required to transfer pollen between male and female parts.
• The absence of pollinators will limit seed production and fertilization
• Bees, birds, insects, or butterflies act as pollinators.

Ans. Cross-pollination has some benefits:

• Formation of genetically viable plants.
• New variety of plant formation.
• Reduces inbreeding depression

Ans. Asexual reproduction in plants can take place naturally and artificially.

• Budding, fragmentation, vegetative propagation, and spore formation are the natural methods. 
• Artificial methods include budding, grafting, cutting, and layering.

Ans. The different mechanisms of monoecious plants are:

• Wind-pollinated flowers- These flowers produce lightweight pollen grains in large numbers that are carried by wind. Examples are nutgrass, cottonwood, and papyrus.
• Insect-pollinated flowers- They produce nectar to attract the insects. These flowers are brightly colored with sweet fragrances.

Ans. A phenomenon that reduces the ability of a population to reproduce or survive is called inbreeding depression. This occurs when mating takes place between related individuals.