- Which one of the following phyla is correctly matched with
its two general characteristics?
(a) Echinodermata – pentamerous radial symmetry and
mostly internal fertilisation
(b) Mollusca – normally oviparous and development
through a trochophore or veliger larva
(c) Arthropoda – body divided into head, thorax and
abdomen and respiration by mouth
(d) Chordata – notochord persists throughout the life and
separate anal and urinary openings to the outside
- In the life history of liver fluke (1) Cercariae (2) Metacer-
cariae (3) Sporocyst (4) Rediae (5) Miracidium are present.
What is their proper sequence?
(a) 21354 (b) 53412
(c) 54213 (d) 54312
- Identify the figures A, B, C and D and select the correct option.
(a) A-Liver fluke; B-Male roundworm; C-Hirudinaria;
D-Nereis
(b) A-Liver fluke; B-Female roundworm; C-Hirudinaria;
D-Nereis
(c) A-Liver fluke; B-Male roundworm; C-Nereis;
D-Hirudinaria
(d) A-Liver fluke; B-Female roundworm; C-Nereis;
D-Hirudinaria
- Which one of the following categories of animals, is
correctly described with no single exception in it?
(a) All reptiles possess scales, have a three chambered
heart and are cold blooded (poikilothermal).
(b) All bony fishes have four pairs of gills and an
operculum on each side.
(c) All sponges are marine and have collared cells.
(d) All mammals are viviparous and possess diaphragm
for breathing.
- In cephalochordates, notochord is
(a) confined only to head
(b) confined only to tail
(c) extended from head to tail
(d) absent in adult.
- Which one of the following is correct matching pair of a
body feature and the animal possessing it?
(a) Ventral central – Hirudinaria
nervous system
(b) Pharyngeal gill slits – Chameleon
absent in embryo
(c) Ventral heart – Palamneus
(d) Post-anal tail – Octopus
- Organism with shortest gestation period is
(a) duck-billed platypus (b) opossum
(c) elephant (d) rabbit.
- Which of the following group is formed of only the
hermaphrodite organisms?
(a) Earthworm, tapeworm, housefly, frog
(b) Earthworm, tapeworm, sea horse, housefly
(c) Earthworm, leech, sponge, roundworm
(d) Earthworm, tapeworm, leech, sponge
- Crocodile and penguin are similar to whale and dog fish in
which one of the following features?
(a) Possess a solid single stranded central nervous system
(b) Lay eggs and guard them till they hatch
(c) Possess exoskeleton
(d) Have gill slits at some stage
- Select the incorrect statement among the following.
(a) Spherical symmetry is present in Volvox.
(b) In bilateral symmetry, the body can be divided into
two equal halves by any plane passing through the
centre from top to bottom.
(c) Radial symmetry is present in sea anemones.
(d) In blind sac body plan, the body has a single cavity
with one opening to the outside.
- Which of the following character is not present in
cartilaginous fishes?
(a) Ten pairs of cranial nerves
(b) Sac-like outgrowth called air bladder arising from
oesophagus
(c) Well developed lateral line system
(d) Minute placoid scales on skin
- Which of the following is not a mammalian feature of
crocodilians?
(a) 12 pairs of cranial nerves
(b) Four chambered heart
(c) Foramen of panizza (d) Bony secondary palate
- Class Crustacea have which of the following features?
(a) Cephalothorax, biramous appendages and gills
(b) Cephalothorax, book lungs and chitinous exoskeleton
(c) Head and thorax, book lungs and chitinous
exoskeleton
(d) Head and thorax, biramous appendages and book
lungs
- Which one of the following pairs of animals is correctly
matched with the kind of their body symmetry?
(a) Hydra and shark - Bilateral symmetry
(b) Tapeworm and Octopus - Radial symmetry
(c) Amoeba and sea urchin - Asymmetry
(d) Jellyfish and starfish - Radial symmetry
