Explain the meaning of the folowing with reference to human welfare.
a. Embryo culture b. Somatic hybridisation.

Explanation

### Step-by-Step Solution

**Step 1: Understanding Embryo Culture**
- **Definition**: Embryo culture is a technique in plant biotechnology where embryos are excised from the parent plant and cultured in a nutrient medium to develop into a complete plant.
- **Process**: The embryos are taken from fertilized ovules and placed in a controlled environment (in vitro) where they can grow and develop. The nutrient medium provides the necessary nutrients and hormones for growth.
- **Human Welfare**: This technique is significant for human welfare as it allows for the propagation of plants that may not survive in natural conditions. It can help in the conservation of endangered plant species, enhance crop production, and ensure food security by producing disease-resistant and high-yielding varieties.

**Step 2: Understanding Somatic Hybridization**
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