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Animal Kingdom
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.
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What is the difference between direct and indirect development?
What are the peculiar features that you find in parasitic platyhelminthes?
What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
Water vascular system is the characteristic of which group of the following:
“All vertebrates are chordates but all chordates are not vertebrates”. Justify the statement.
How important is the presence of air bladder in Pisces?
What are the modifications that are observed in birds that help them fly?
Could the number of eggs or young ones produced by an oviparous and viviparous mother be equal? Why?
Segmentation in the body is first observed in which of the following
Match the following:
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