Recent questions tagged class11

In Arthropoda : 1. They have jointed appendages 2. As they have jointed appendages they are called arthropods. Regarding 1 and 2:

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In Arthropoda : 1. The body consists of head, neck, thorax and abdomen. 2. They have jointed appendages Regarding 1 and 2:

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1. Arthropods are bilaterally symmetrical, triploblastic, segmented and coelomate animals. 2. The body of arthropods is supported by chitinous endoskeleton. Regarding 1 and 2:

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Arthropods are

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The second largest phylum of Animalia is

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The largest phylum of Animalia is

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Choose the odd one out:

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Choose the odd one out:

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Choose the odd one out:

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Choose the odd one out:

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Annelida : Neural system consists of paired ganglia connected by :

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In Annelida: Nephridia (sing. nephridium) help in

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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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If $O$ is origin, $|\overrightarrow{OP}|=3$ with $d.r.=(-1,2,-2)$ then the coordinate of $P$ is ?

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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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