Fungicides and antibiotics are chemicals that:

1. enhance yield and disease resistance.
2. kill pathogenic fungi and bacteria, respectively.
3. kill all pathogenic microbes.
4. kill pathogenic bacteria and fungi, respectively.

Subtopic:  Plant Breeding for Quality (OLD NCERT) |
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Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is because of

1. shorter rice plant

2. better irrigation facilities

3. early yielding rice variety

4. disease-resistant rice variety

Subtopic:  Plant Breeding for Quality (OLD NCERT) |
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To isolate protoplast, one needs:

1. pectinase

2. cellulase

3. both pectinase and cellulase

4. chitinase.

Subtopic:  Plant Breeding & Its Steps (OLD NCERT) | Plant Breeding for Quality (OLD NCERT) |
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