Botryoidal tissue is found in

(1) hirudina

(2) polychaeta

(3) oligochaeta

(4) all of these.

Which of the following is an egg laying mammal?

1. Kangaroo

2. Platypus

3. Penguin

4. Whale

Class Crustacea has following features:

(1) Cephalothorax, book lungs, chitinous exoskeleton

(2) Head and thorax, biramous appendages, book lungs

(3) Head and thorax, book lungs, chitinous exoskeleton

(4) Cephalothorax, biramous appendages, gills

Which of the following is wrongly matched?
 

Which of the following is correct about nematocyst?

(1) It can be re-used.

(2) It is excretory organ in arthropods

(3) It is ejected on contact and pierce the prey

(4) None of these

Ambulacral grooves are absent in the living forms of the Class

1. Crinoidea

2. Asteroidea

3. Ophiuroidea

4. Echinodermata

Which of the following Phyla are included in Enterozoa?

Hydra receives impulses and stimuli through

(1) nerve net

(2) nematocytes

(3) sensory cells

(4) flame cells

Which one feature is common to leech, cockroach and scorpion?

Based on cellular mechanisms there are two major types of regeneration found in the animals. Which one of the following is the correct example of the type mentioned?

(1) Morphallaxis - Regeneration of two transversel cut equal pieces of a Hydra into two small Hydras

(2) Epimorphosis - Replacement of old and dead erythrocytes by the new ones

(3) Morphallaxis - healing up of a wound in the skin

(4) Epimorphosis - Regeneration of crushed and filtered out pieces of a Planaria into as many new Planarians