1. Periplaneta
2. Star fish
3. Hydra
4. All of these
Hydra
1. 40 years
2. 50 years
3. 60 years
4. 70 years
70 years
1. Birth
2. Two years
3. Ten years
4. 18 years
Ten years
1. Liver
2. Brain
3. Kidney
4. Gonads
Liver
1. 10-14 years
2. 8-11 years
3. 10-13 years
4. 11-16 years
11-16 years
1. 35 days
2. 15 days
3. 45 days
4. 45 days
35 days
1. Somatotropic hormone
2. Thyroxine
3. Thymosin
4. Gonadotrophic hormone
Thymosin
1. Keratin
2. Elastin
3. Collagen
4. Globulin
Collagen
1. Calcium
2. Magnesium
3. Sodium
4. Phosphorous
Calcium
1. Skin surface
2. Lining layer of gut
3. Red blood cells
4. All of these
All of these