Pollen culture produces

Options

A. Haploid plants where every gene can express its effect
B. Homozygous diploid plants
C. Abundant seeds of rare plants
D. Abundant pollen in male sterile plants.

Answer

**Step-by-Step Solution:**

1. **Understanding Pollen Culture**: Pollen culture is a technique used in plant biology where pollen grains are cultured to produce new plants. This process is carried out under sterile conditions to prevent contamination.

2. **Origin of Pollen**: Pollen grains are obtained from the anthers of flowering plants. The anthers are the male reproductive parts of flowers that produce pollen.

3. **Sterilization Process**: The collected pollen grains are sterilized using a solution, often hypochlorite, to eliminate any unwanted microorganisms.

4. **Culturing Pollen**: After sterilization, the pollen grains are placed on nutrient media that provide the necessary nutrients for growth.

5. **Formation of Callus**: The cultured pollen grains develop into a mass of undifferentiated cells called callus. This is an important step in plant tissue culture.

6. **Role of Auxins**: Auxins, which are plant hormones, are added to promote root formation from the callus.

7. **Role of Cytokinins**: Cytokinins, another type of plant hormone, are introduced to stimulate the formation of shoots from the callus.

8. **Haploid Plant Development**: The end result of this process is the development of haploid plants. These plants have only one set of chromosomes, allowing every gene to express its effects without being masked by a second allele.

9. **Conclusion**: Therefore, the correct answer to the question "Pollen culture produces" is **option A: Haploid plants where every gene can express its effect.**

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