Which of the following is true about the following  organism?

          

1.Radial symmetry is present

2.Fertilisation is external

3.multicellular animal

4.coelomate organism
  • 1
  • 2
  • 3
  • 4

Which of the following is  not true about the given organism?

                       

1.Bilateral symmetry is present

2.Hermaphrodite

3.Indirect development

4.Acoelomate organism
  • 1
  • 2
  • 3
  • 4

The name of the phylum Cnidaria is derived from the

  • Nematocysts

  • Cnidoblasts

  • Cnidocytes

  • Both 2 and 3

Stinging capsule present in Cnidarians is called

  • Nematocysts

  • Choanocytes

  • Cnidocytes

  • Both 2 and 3

Cnidocytes are used for

  • Anchorage

  • Defence

  • Capturing of prey

  • All of these

Which of the following is not true about Cnidarians

  • Radial symmetry

  • Diploblastic

  • Tissue level of organisation

  • Deutrostomes

The distinctive feature of Cnidarians is

  • Cnidoblast

  • Polyp and Medusa form

  • Gastro-vascular cavity

  • Hypostome

Which of the following is true about Gastro-vascular cavity of Cnidarians?

  • It contains single opening

  • Mouth on hypostome

  • Anus on hypostome

  • Both 1 and 2

The sessile and cylindrical form of Cnidarians is called as

  • Medusa

  • Polyp

  • Both 1 and 2

  • Neither medusa nor Polyp

The umbrella shaped and free-swimming form of Cindarians is not present in

  • Aurelia

  • Jellyfish

  • Adamsia

  • Both 1 and 2

Metagenesis is not present in

  • Obelia

  • Adamsia

  • Pennatula

  • Both 2 and 3

Match the following organism with their respective characteristics:

(a)   Pila                    (i)   Flame cells

(b)   Bombyx             (ii)   Comb plates

(c)   Pleurobrachia     (iii)   Radula

(d)   Taenia               (iv)   Malpighian tubules

Select the correct option from the following:

          (a)         (b)         (c)         (d)

  •        (iii)         (ii)         (iv)        (i)

  •        (iii)         (ii)          (i)         (iv)

  •        (iii)         (iv)         (ii)         (i)

  •         (ii)         (iv)        (iii)         (i)

Alternation of generation is present in

  • Sea-pen

  • Sea-fan

  • Obelia

  • Sea anemone

Which of the following is incorrect statement

  • Polyp produce medusae asexually

  • Medusae produce polyp sexually

  • Polyp produce medusae sexually

  • Obelia shows metagenesis

Which of the following is known as Portugese man of war?

  • Pennatula

  • Adamsia

  • Meandrina

  • Physalia

Which of the following  not started from Cnidarians?

  • Tissue level of Organisation

  • Radial symmetry

  • Diploblastic body plan

  • Presence of mesoderm

In which of the following form metamerism is present

  • Obelia

  • Hydra

  • Sea anemone

  • None of the above

Which of the following germinal layer is absent in Cnidarians

  • Ectoderm

  • Endoderm

  • Mesoderm

  • Both 2 and 3

Ctenophores are commonly known as

  • Sea walnuts

  • Comb jellies

  • Cnidarians

  • Both 1 and 2

Which of the following helps in excretion and osmoregulation in Flatworms

  • Flame cells

  • Nephridia

  • Malphigian tubules

  • Green glands

Hooks and Suckers are present in

  • All Flatworms

  • Parasitic flatworms

  • Non-parasitic flatworms

  • None of these

Which of the following is known as Tapeworm

  • Dugesia tigrina

  • Taenia solium

  • Fasciola hepatica

  • Schistoma

Which of the following is known liverfluke

  • Taeniasaginata

  • Taeniasolium

  • Fasciola hepatica

  • Schistoma

Which of the following is true about Tapeworm

  • Primary host is man

  • Secondary host is pig

  • Hermaphrodite

  • All of the above

Which of the following is true about Liver fluke

  • Primary host is Sheep/Goat

  • Secondary host is Garden snail

  • Cause Cirrhosis

  • All of the above

Which of the following is not true about Flatworms

  • Fertilisation is internal

  • Indirect development

  • Hermaphrodite

  • Mesoderm is absent

A phylum which are multicellular, having Bilateral symmetry and without body cavity is

  • Platyhelminthes

  • Aschelminthes

  • Nemathelminthes

  • Both 2 and 3

Aschelminthes are called roundworms because

  • Body is circular in cross-section

  • Pharynx is muscular

  • Sexual dimorphism is present

  • Both 2 and 3

Which is true for roundworms?

  • Organ-system level of body organisation

  • Tube within tube plan

  • Pseudo-coelomate animals

  • All of these

Which of the following is not true for Roundworms

  • Complete alimentary canal

  • Well developed muscular pharynx

  • Both longitudinal and circular muscles present

  • Sexual Dimorphism

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Practice Zoology Quiz Questions and Answers