B Siphonophora is an order of cephalopods within class Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. - Siphonophores are highly polymorphic and complex organisms. - Like other hydrozoans, some siphonophores emit light to attract and attack prey.
J and K CET-2009
Animal kingdom
261690
In Hydra, waste material of food digestion and nitrogenous waste material are removed from
1 mouth
2 body wall
3 mouth and body wall
4 mouth and tentacles
Explanation:
C Hydra does not have any special excretory organ, they excrete via the general body surface by the process of diffusion. In hydra, undigested residues are effected from coelenteron through the mouth while nitrogenous excretory product (ammonia) is removed from the general body surface. - Some nitrogenous waste products are also expelled out along with indigestible matter through the mouth.
BHU PMT (Screening)-2010
Animal kingdom
261691
Which of the following animals has a tetramorphic colony?
1 Velella
2 Physalia
3 Obelia
4 Porpita
Explanation:
B Physalia is tetramorphic in nature. A tetramorphic colony is a coloniat organism that consists of four types of zooids. Physalia is a type of jellyfish. The four types of zooids in a physalia colony are- - Gastrozooid - This is the feeding zooid. - Dactylozooid - This is the defensive zooid. - Gonozooid - This is the reproductive zooid. - Gonopalpon - This is a non-reproductive zooid .
MGIMS Wardha-2013
Animal kingdom
261692
Gonads of Obelia occur in
1 on blastocyst
2 hydrula stage
3 radial canals of medusa
4 bases of tentacles of medusa
Explanation:
C Gonads of Obelia occurs in radial canals of medusa which is type sexual reproduction of responsible for dispersion of sperm and ova in water. - These gonads are responsible for dispersion of sperms and ova in water.
B Siphonophora is an order of cephalopods within class Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. - Siphonophores are highly polymorphic and complex organisms. - Like other hydrozoans, some siphonophores emit light to attract and attack prey.
J and K CET-2009
Animal kingdom
261690
In Hydra, waste material of food digestion and nitrogenous waste material are removed from
1 mouth
2 body wall
3 mouth and body wall
4 mouth and tentacles
Explanation:
C Hydra does not have any special excretory organ, they excrete via the general body surface by the process of diffusion. In hydra, undigested residues are effected from coelenteron through the mouth while nitrogenous excretory product (ammonia) is removed from the general body surface. - Some nitrogenous waste products are also expelled out along with indigestible matter through the mouth.
BHU PMT (Screening)-2010
Animal kingdom
261691
Which of the following animals has a tetramorphic colony?
1 Velella
2 Physalia
3 Obelia
4 Porpita
Explanation:
B Physalia is tetramorphic in nature. A tetramorphic colony is a coloniat organism that consists of four types of zooids. Physalia is a type of jellyfish. The four types of zooids in a physalia colony are- - Gastrozooid - This is the feeding zooid. - Dactylozooid - This is the defensive zooid. - Gonozooid - This is the reproductive zooid. - Gonopalpon - This is a non-reproductive zooid .
MGIMS Wardha-2013
Animal kingdom
261692
Gonads of Obelia occur in
1 on blastocyst
2 hydrula stage
3 radial canals of medusa
4 bases of tentacles of medusa
Explanation:
C Gonads of Obelia occurs in radial canals of medusa which is type sexual reproduction of responsible for dispersion of sperm and ova in water. - These gonads are responsible for dispersion of sperms and ova in water.
B Siphonophora is an order of cephalopods within class Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. - Siphonophores are highly polymorphic and complex organisms. - Like other hydrozoans, some siphonophores emit light to attract and attack prey.
J and K CET-2009
Animal kingdom
261690
In Hydra, waste material of food digestion and nitrogenous waste material are removed from
1 mouth
2 body wall
3 mouth and body wall
4 mouth and tentacles
Explanation:
C Hydra does not have any special excretory organ, they excrete via the general body surface by the process of diffusion. In hydra, undigested residues are effected from coelenteron through the mouth while nitrogenous excretory product (ammonia) is removed from the general body surface. - Some nitrogenous waste products are also expelled out along with indigestible matter through the mouth.
BHU PMT (Screening)-2010
Animal kingdom
261691
Which of the following animals has a tetramorphic colony?
1 Velella
2 Physalia
3 Obelia
4 Porpita
Explanation:
B Physalia is tetramorphic in nature. A tetramorphic colony is a coloniat organism that consists of four types of zooids. Physalia is a type of jellyfish. The four types of zooids in a physalia colony are- - Gastrozooid - This is the feeding zooid. - Dactylozooid - This is the defensive zooid. - Gonozooid - This is the reproductive zooid. - Gonopalpon - This is a non-reproductive zooid .
MGIMS Wardha-2013
Animal kingdom
261692
Gonads of Obelia occur in
1 on blastocyst
2 hydrula stage
3 radial canals of medusa
4 bases of tentacles of medusa
Explanation:
C Gonads of Obelia occurs in radial canals of medusa which is type sexual reproduction of responsible for dispersion of sperm and ova in water. - These gonads are responsible for dispersion of sperms and ova in water.
B Siphonophora is an order of cephalopods within class Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. - Siphonophores are highly polymorphic and complex organisms. - Like other hydrozoans, some siphonophores emit light to attract and attack prey.
J and K CET-2009
Animal kingdom
261690
In Hydra, waste material of food digestion and nitrogenous waste material are removed from
1 mouth
2 body wall
3 mouth and body wall
4 mouth and tentacles
Explanation:
C Hydra does not have any special excretory organ, they excrete via the general body surface by the process of diffusion. In hydra, undigested residues are effected from coelenteron through the mouth while nitrogenous excretory product (ammonia) is removed from the general body surface. - Some nitrogenous waste products are also expelled out along with indigestible matter through the mouth.
BHU PMT (Screening)-2010
Animal kingdom
261691
Which of the following animals has a tetramorphic colony?
1 Velella
2 Physalia
3 Obelia
4 Porpita
Explanation:
B Physalia is tetramorphic in nature. A tetramorphic colony is a coloniat organism that consists of four types of zooids. Physalia is a type of jellyfish. The four types of zooids in a physalia colony are- - Gastrozooid - This is the feeding zooid. - Dactylozooid - This is the defensive zooid. - Gonozooid - This is the reproductive zooid. - Gonopalpon - This is a non-reproductive zooid .
MGIMS Wardha-2013
Animal kingdom
261692
Gonads of Obelia occur in
1 on blastocyst
2 hydrula stage
3 radial canals of medusa
4 bases of tentacles of medusa
Explanation:
C Gonads of Obelia occurs in radial canals of medusa which is type sexual reproduction of responsible for dispersion of sperm and ova in water. - These gonads are responsible for dispersion of sperms and ova in water.
