1. 1
2. 4
3. 16
4. 32
16
1. Oligospermia
2. Athenospermia
3. Azoospermia
4. Polyspermy
Athenospermia
1. Spermatogonial cells
2. Germinal epithetic cells
3. Secondary spermatocytes
4. Primary spermatocytes
Spermatogonial cells
1. choanocyte
2. gemmule
3. osculum
4. blastula
gemmule
1. asexual reproduction
2. sexual reproduction
3. parthenogenesis
4. parthenocarpy
asexual reproduction
1. Sycon
2. Hydra
3. Fasciola
4. Obelia
Hydra
1. regeneration
2. abnormal development
3. asexual reproduction
4. sexual reproduction
asexual reproduction
1. anisogamy
2. plasmogamy
3. plasmotomy
4. schizogamy
anisogamy
1. Linnaeus
2. Huxley
3. de Candolle
4. John Ray
John Ray
1. two words in name of a species
2. two names local and specific
3. two names of a species
4. two phases, asexual and sexual, in the life cycle of a species
two words in name of a species