Test Preparation on Animal Kingdom - IV - Biology Test Series for NEET - 2020
Which one of the following is not used in organic farming
(c) In sepia, the foot is modified into oral arms and siphon.
The devil fish and sea hare are
Which one of the following phyla is correctly matched with
its two general characteristics
(a) Echinodermata – Pentamerous radial symmetry and
mostly internal fertilization
(b) Mollusca – Normally oviparous and
development through a trochophore
or veligerlarva
(c) Arthropoda – Body divided into head, thorax and
abdomen and respiration by
tracheae
(d) Chordata – Notochord at some stage and
separate anal and urinary opening
to the outside
Foot is displaced to the neighbourhood of mouth and
divided into arms in
Which of the following belongs to the class gastropoda
(c) Sea hare (Aplysia punctata) and snail (Helix) belong to
same class gastropoda of phylum mollusca.
The mollusc which is considered to be a living fossil and also
shows characters of annelids like nephridia and internal
segmentation is
(c) Neopilina is a most primitive mollusca having characters
of annelida i.e., internal metameric segmentation, 5 pair
of nephridia etc. There is no common name of this
mollusc which is truly a living fossils and connecting link
between annelids and molluscs.
In which one of the following, the genus name, its two
characters and its phylum are not correctly matched,
whereas the remaining three are correct
In mollusca, eye is present over a stalk called
(d) The head of snail bears a pair of short, fleshy and
stump-like optic stalk or ommatophores, one on either
side behind 2nd pair of tentacles each ommatophore
bears a small, black and some what circular eye, slightly
below its tip on the other side.
“Shell of mollusc is produced by its
(c) Mantle secrets a calcareous shell which is generally
external but may be internal an supportive or absent.
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