1. Presence of schizocoel
2. Non-formation of anus from blastopore
3. Coelom lined by mesoderm on both sides
4. Absence of false coelom
Absence of false coelom
1. Nervous system
2. Sweat gland
3. Lens of eye
4. All of these
All of these
1. Organogenesis
2. Neurogenesis
3. Mesogenesis
4. Notogenesis
Organogenesis
1. Coelom
2. Blastocoel
3. Archenteron
4. Chorion
Archenteron
1. Tissue
2. Cells
3. Organ
4. Organ system
Organ system
1. Total
2. Spiral
3. Incomplete
4. Horizontal
Incomplete
1. Ejaculation
2. Implantation
3. Insemination
4. Copulation
Insemination
1. Anus
2. Mouth
3. Nose
4. Both (a) and (b)
Mouth
1. Junction of endoderm and ectoderm
2. Endoderm
3. Ectoderm
4. Archenteron
Junction of endoderm and ectoderm
1. Cleavage divisions bring about considerable increase in the mass of protoplasm
2. In the second cleavage division,one of the two blastomeres usually divides a little sooner than the second
3. With more cleveage divisions,the resultant blastomeres become larger and larger
4. Cleavage division results in a hallow ball of cells called morula
Cleavage division results in a hallow ball of cells called morula