The unique larva seen in all crustaceans is called a

(1) Naupilus

(2) Trochophore

(3) Planula

(4) Nymph

The heart of an insect pumps blood into

(1) legs

(2) head region

(3) thorax region

(4) abdominal region

The molting process in arthropods is called

(1) Metamorphosis

(2) Tagnatization

(3) Ecdysis

(4) Neoteny

Life span of a worker bee is

(1) 10 days

(2) 15 days

(3) 6 weeks

(4) 10 weeks

What is true about bees?

Ascaris and cockroach resemble each other in

(1) Psuedocoel

(2) Sexual dimorphism

(3) Nephridia

(4) Dorsal tubular nerve cord

Which one of the following is a matching pair of an animal and a certain phenomenon it exhibits?
1. Pheretima-Sexual dimorphism
2. Musca - Complete metamorphosis
3.  Chamaleon-Mimicry
4. Taenia-Polymorphism

In which group of arthropods, is the body divisible into head, thorax and abdomen?

(1) Myriapoda

(2) Crustacca

(3) Arachnida

(4) Insecta

Select the wrong statement

(1) Prawn has two pairs of antennae

(2) Molipedes have two pairs of appendages in each segment of the body

(3) Nematocysts are characteristic of Cnidarians

(4) Porifers are exclusively marine

Two common characters found in Centipede, Cockroach and Crab are

(1) Jointed legs and chitinous exoskeleton

(2) Green glands and tracheae

(3) Book lungs and antennac

(4) Compound eyes and anal cerci