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1
The organism with pseudocoelom, bilaterally symmetrical, unsegmented and triploblastic body layer is the member of which phylum ?
Annelida
Arthropoda
Mollusca
Aschelminthes
2
The digestive system in case of flatworms is _______________.
Undifferentiated
Complete
Incomplete
None of the above
3
Ascaris lumbricoides which causes the disease Ascariasis is the member of ________________ phylum.
Animalia
4
Which is the only phyllum without any nerve cell in the animal kingdom?
Porifera
Coelenterata
Nematoda
5
Organisms of ____________________ phylum have cellular level of organization of the body.
Platyhelminthes
6
_______________is the class of Sponges.
Chalk sponges
Glass sponges
Coral reefs
Both A and B
7
Aschelminthes are called as the roundworms because _________ .
they are spherical in shape
they have circular mouth
there body is round in cross section
they have pseudocoelom cavity
8
Which of the following charracteristics is true of a virus?
I. It has a nucleus
II. It reproduces only in living cells
III. It contains either DNA or RNA
I only
I and III only
II and III only
I, II and III
9
Flatworm reproduce by _____________ .
Sexual method
Asexual method
10
Observe the following figure carefully and identify it.
Penicillium
tobacco Mosaic Virus
Rhizobium
Amoeba
11
In the figure of the earthworm given below, the horizontal lines throughout the body represent
Cells of the body
Cell walls separating the cells of the body
Vertically arranged muscles of the body
Septa separating segments of the body
12
Of the animal group listed below, which one evolved first ?
Flaworms
Sponges
Arthropods
Vertebrates
13
Cockroaches respire through
Gills
Spiracles
Lungs
Book lungs
14
Which of the following is not a parasitic form of the flatworm ?
Tapeworm
Liver fluke
Planaria
Blood fluke
15
The excretory cells that are found in organisms like Planaria are called as _________________ .
Echinodermata