1. Contractile vacuole
2. Trichocysts
3. Cytopyge
4. Cytostome
Contractile vacuole
1. 4
2. 6
3. 8
4. 5
4
1. Geological distribution
2. Geographical distribution
3. Zoological distribution
4. Cosmos distribution
Cosmos distribution
1. Human kidney and earthworm's nephridia
2. Bat's wings and horse's front legs
3. Human trachea and insect tracheae
4. Tendril of cucumber and tendril of smilax
Tendril of cucumber and tendril of smilax
1. Normalization
2. Genetic drift
3. Convergence
4. Divergence
Divergence
1. Jurassic
2. Archaeozoic
3. Cretaceous
4. Triassic
Jurassic
1. Archaeopteryx between birds and mammals
2. Whale between fishes and mammals
3. Duck-billed platypus between reptiles and mammals
4. Java ape man between modern man and peking man
Duck-billed platypus between reptiles and mammals
1. Feathers
2. Scales
3. Claws
4. Hairs
Scales
1. Coccyx, nictitating membrane, vermiform appendix are vestigal organs
2. Vestigal organs are functional
3. Vestigal organs were non-functional in ancestors
4. None of the above
Coccyx, nictitating membrane, vermiform appendix are vestigal organs
1. Wings of insects and birds are analogous
2. Wings of insects and bat are analogous
3. Wings of insects and birds are homologous
4. Wings of bat and birds are homologous
Wings of insects and birds are homologous