1. descending series
2. horizontal series
3. ascending series
4. None of the above
descending series
1. Herpetology
2. Ichthyology
3. Pisciculture
4. Saurology
Ichthyology
1. Angiology
2. Splanchnology
3. Anthiology
4. Arthrology
Splanchnology
1. identification
2. classification
3. nomenclature
4. None of them
classification
1. Craniology
2. Ichthyology
3. Nidology
4. None
Nidology
1. Birds
2. Snails
3. Marine fishes
4. Snakes
Snakes
1. Hormones
2. Skeletal joints
3. Desert
4. None of these
Skeletal joints
1. Physiology
2. Ecology
3. Biology
4. Systematics
Systematics
1. Tectology
2. Ctenology
3. Ontogeny
4. Osteology
Tectology
1. Charles Darwin
2. John Ray
3. Linnaeus
4. Julian Huxley
Linnaeus