Tapeworms have developed adaptations to make them successful as parasites. They attach to the digestive lining of the host by means of their

(1) Stylets

(2) Proglottids

(3) Radula

(4) Scolex

Jelly Fishes belong to the class

(1) Hydrozoa

(2) Anthozoa

(3) Scyphozoa

(4) None of these

Organ pipe coral is

(1) Tubipora

(2) Astraea

(3) Helipora

(4) Fungia

Budding is a normal mode of asexual reproduction in

The planulae of ______________ develop only into polyps

(1) Cubozoa

(2) Anthozoa

(3) Scyphozoa

(4) Hydrozoa

Which one of the following animals posseses nerve cells but no nerves?

(1) Hydra

(2) Tapeworm

(3) Earthworm

(4) Tadpole

Which of the following is a special character of coelenterates?

(1) Polymorphism

(2) Hermaphroditism

(3) Flame cells

(4) Nematocysts

Cnidarians do not include

(1) jellyfish

(2) comb jelly

(3) coral

(4) sea anemone

The nature of which of the following gives Scyphozoans their common name "jellyfish"?

(1) Pellicle

(2) Mesoglea

(3) Mesenchyme

(4) Ectodermis

Both a mouth and an anal pore (a one-way digestive system) is present in

(1) Ctenophorans

(2) Cnidarians

(3) Tapeworms

(4) Planarians