Which one is a neem product used as insect repellent?
1. Rotenone
2. Azadirachtin
3. Parathion
4. Endrin

Wild varieties of plants must be conserved to
1. Maintain ecosystem
2. Feeding wild animals
3. Future evolution
4. Incorporate useful traits in future crop varieties

To obtain virus - free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken ?
1. Apical meristem only
2. Palisade parenchyma
3. Both apical and axillary meristems
4. Epidermis only