Which of the following animals has a tetramorphic colony?
Velella
Physalia
Obelia
Porpita
B.
Physalia
Physalia is tetramorphic in nature, it consists of
(i) a small dactylozooid with a long slender tantacle.
(ii) a gastrozooid with mouth but no tentacle.
(iii) a branched gonozooid, which bears both male and female gonophores.
(iv) a large dactylozooid with an enormous nematocyst bearing fishing tentacle.
Select the correct set of animals of Class- Mammalia.
Lion, bat, whale, ostrich
Whale, bat, kangaroo, hippopotamus
Lion, hippopotamus, penguin, bat
Hippopotamus, penguin, whale, kangaroo
Respiration in Ascaris is
aerobic respiration
anaerobic respiration
Both (a) and (b)
None of the above
Digestion in Leucosolenia and other sponges is
only extracellular
only intracellular
first extracellular, then intracellular
first intracellular, then extracellular