Recent questions tagged ch4

Regarding Ctenophores: 1. Digestion is extracellular. 2. Digestion is intracellular

asked Jan 3, 2014 by pady_1

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Regarding Ctenophores: 1. The body bears eight external rows of ciliated comb plates 2. Comb plates help in locomotion

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Regarding Ctenophores:

asked Jan 3, 2014 by pady_1

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Regarding Ctenophores all are correct except:

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Metagenesis is exibited by

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Sea-pen is:

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Portuguese man-of-war is:

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Sea anemone is :

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Choose the odd one out :

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Choose the odd one out :

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In Cnidarians: 1. Metagenesis is exibited by Obelia 2. Some of the cnidarians like corals have a skeleton composed of calcium carbonate

asked Jan 3, 2014 by pady_1

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Alternation of generation or Metagenesis in Cnidarians 1. Polyps produce medusae asexually 2. Medusae form the polyps sexually Regarding 1 and 2:

asked Jan 3, 2014 by pady_1

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Some of the cnidarians have a skeleton composed of:

asked Jan 3, 2014 by pady_1

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1. Cnidarians exhibit tissue level of organisation 2. Cnidarians are triploblastic Regarding 1 and 2:

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Cnidoblasts are used for all except:

asked Jan 3, 2014 by pady_1

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Assertion (A): The members of phylum Coelenterata are called Cnidarians . Reason (R): The cnidoblasts or cnidocytes (which contain the stinging capsules or nematocytes) present on the tentacles and the body of Coelenterata Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

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Regarding Phylum Coelenterata (Cnidaria) all are correct except :

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Regarding habitat and habit of Phylum Coelenterata (Cnidaria) :

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Regarding Phylum Coelenterata (Cnidaria) :

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Choose the odd one out :

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Regarding reproduction in sponges:

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Sponges have a water transport or canal system which is helpful in:

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Non-chordates are:

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1. Animals with notochord are called chordates 2. Those animals which do not form this structure are called hemichordates Regarding 1 and 2:

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Regarding Notochord are all correct except:

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Choose the odd one out (regarding coelem):

asked Jan 3, 2014 by pady_1

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Choose the odd one out (regarding coelem):

asked Jan 3, 2014 by pady_1

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In animals: 1. Presence or absence of a cavity between the body wall and the gut wall is not important in classification. 2. The body cavity, which is lined by mesoderm is called coelom.

asked Jan 3, 2014 by pady_1

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Regarding complexity of the circulatory system in animals: 1. open type - blood is pumped out of the heart and the cells and tissues are directly bathed in it 2. closed type - blood is circulated through a series of vessels of varying diameters (arteries, veins and capillaries).

asked Jan 3, 2014 by pady_1

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Regarding complexity of digestive system in animals: 1. An incomplete digestive system has single opening to the outside of the body that serves as both mouth and anus. 2. A complete digestive system has two openings, mouth and anus.

asked Jan 3, 2014 by pady_1

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Assertion (A): The digestive system in Platyhelminthes is complete. Reason (R): The digestive system in Platyhelminthes has a single opening to the outside of the body that serves as both mouth and anus Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

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Classification of animals is based on all except:

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Evaluate: $ \begin{vmatrix} (x-2)^2 & (x-1)^2 & x^2 \\ (x-1)^2 & x^2 & (x+1)^2 \\ x^2 & (x+1)^2 & (x+2)^2 \end{vmatrix}$

asked Dec 22, 2013 by balaji.thirumalai

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