1. Sachs
2. Dixon and jolly
3. Bose
4. Robert brown
Dixon and jolly
1. Glochidium larva
2. Trochophore larva
3. Zoea larva
4. Amphiblastula larva
Amphiblastula larva
1. Increase transpiration
2. Reduces transpiration
3. Increases rate of photosynthesis
4. Causes guttation
Reduces transpiration
1. Calcarea
2. Hexactinellida
3. Hydrozoa
4. Demospoangiae.
Hydrozoa
1. Protozoa and porifera
2. Protozoa and coelenterate
3. Protozoa and annelid
4. None of the above.
Protozoa and porifera
1. Cellulose fibres
2. Silk fibres
3. Spongin fibres
4. Yellow elastic fibres.
Spongin fibres
1. cell at the opening of incurrent canal
2. smaller canal and connect incurrent canal with radial canal
3. cell which forms lining of spongocoel
4. contractile element at osculum
smaller canal and connect incurrent canal with radial canal
1. Increase transpiration
2. Reduce transpiration
3. Increase rate of photosynthesis
4. Cause guttation
Reduce transpiration
1. The body of sponges consists of epithelial tissues only
2. All the 4 type tissues are seen in the body of sponge
3. Only epithelial and connective tissues are present
4. Structurally organized tissues are absent in the body of sponge.
Structurally organized tissues are absent in the body of sponge.
1. Increase
2. Decrease
3. Fluctuate
4. Remain unchanged
Increase