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Option 1 : X - pistil, Y - stigma, Z - ovules
Concept:
- There are two modes of reproduction in plants;
- Sexual and Asexual
- The sexual mode of reproduction takes place through flowers by transfer of pollen grains.
- The asexual mode of reproduction takes place includes budding, spore formation, fragmentation, etc
Explanation:
Pistils:
- The pistils are the female reproductive organ of the flower.
- They are usually located in the center of the flower.
- It is having 3 parts;
- Stigma- It is the sticky knob at the top of the pistils which is receptive to pollen grains.
- Style- It is a long tube-like structure. Stigma is attached to the style of the pistil.
- The style leads to the ovary that contains the female egg cells called ovules and fertilization takes place.
- Ovary- It is the enlarged basal portion of the pistil where ovules are produced.
Therefore, the correct answer is X - pistil, Y - stigma, Z - ovules.
Stamens:
- The stamen is the male reproductive organ of the flower.
- It is having 2 parts:
- Anthers - It is a two-lobed structure that contains microsporangia for the production of pollen grains.
- Filaments - It is a long stalk-like structure that connects the base of the flower with an anther.
- Petals are the colored part of the flowers that give them a unique shape.
- Sepals are leaf-like structures attached to the outside of the flower,
Pollination refers to the transfer of pollen grains from the anther of a stamen to the stigma of a carpel.
- Pollination is done by insects, wind, water, and birds.
- It occurs in 2 ways:
- Self-pollination
- cross-pollination
- Self-pollination refers to the transfer from the anther of a flower to the stigma of the same or genetically similar flowers on the same plant.
- Examples of self-pollinating plants are peanuts, wheat, rice, tomato, etc.
- Cross-pollination refers to the transfer from the anther of a flower on one plant to the stigma of the flower on another plant.
- Examples of cross-pollinating plants are grass
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