Why do algae and fungi shift to sexual mode of reproduction just before the onset of adverse conditions?

Explanation

**Step-by-Step Solution:**

1. **Understanding Reproduction Types**: Reproduction in organisms can be broadly categorized into two types: sexual reproduction and asexual reproduction.

2. **Characteristics of Asexual Reproduction**: In asexual reproduction, only one parent is involved, and there is no fusion of gametes. The offspring produced are genetically identical to the parent, leading to little variation.

3. **Characteristics of Sexual Reproduction**: In sexual reproduction, male and female gametes fuse to form a zygote, which develops into an offspring. This process introduces genetic variation among the offspring.

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