Recent questions in Diversity in Living World

In Annelida:

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Aquatic annelids like Nereis possess _____________ which help in swimming.

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In Annelida locomotion is

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In Annelida : 1. The body surface is distinctly marked out into segments or metameres 2. Hence the phylum is named as Annelida

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Annelida are:

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Regarding Annelida are all correct except:

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Regarding Annelida are all correct except:

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Which among the following has bilaterally symmetrical, triploblastic and acoelomate animals with organ level of organisation: (or) All of the following are pseudocoelomate except:

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Choose the odd one out :

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Aschelminthes are all except:

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Aschelminthes are:

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Regarding Aschelminthes:

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Regarding Aschelminthes: Assertion (A): Members of Aschelminthes are called roundworms Reason (R): The body of worms is circular or ring like in their natural resting position Regarding (A) and (R) :

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Choose the odd one out :

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Regarding Platyhelminthes : Specialised cells called flame cells help in:

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Flatworms are :

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Regarding Platyhelminthes : Assertion (A): Members of Platyhelminthes are called flatworms. Reason (R): They have dorso-ventrally flattened body. Regarding (A) and (R) :

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Among the following members of Ctenophora are:

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The property of a living organism to emit light is called:

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

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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:

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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

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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:

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Some of the cnidarians have a skeleton composed of:

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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:

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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) :

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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):

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Choose the odd one out (regarding coelem):

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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.

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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).

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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.

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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) :

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