Animal kingdom pyq focused
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1
What are the main criteria for classification of animals?
Level of organisation, symmetry, coelom, segmentation and notochord.
2
Name the phylum with cellular level of organisation
Porifera.
3
Which phylum shows tissue level of organisation?
Cnidaria.
4
Which phylum first shows organ system level of organisation?
Annelida.
5
What type of symmetry is found in Porifera?
Asymmetry.
6
Name the phyla showing radial symmetry
Cnidaria and adult Echinodermata.
7
Which phylum shows bilateral symmetry for the first time?
Platyhelminthes.
8
What are diploblastic animals?
Animals having two germ layers.
9
Name a diploblastic phylum
Cnidaria.
10
What are triploblastic animals?
Animals having three germ layers.
11
Name the first triploblastic phylum
Platyhelminthes.
12
Define coelom
Coelom is a fluid-filled body cavity between body wall and gut.
13
Which phylum is acoelomate?
Platyhelminthes.
14
Which phylum is pseudocoelomate?
Aschelminthes.
15
Which phylum first shows true coelom?
Annelida.
16
What is metameric segmentation?
Division of body into repeated segments.
17
Which phylum shows true metamerism?
Annelida.
18
Which phylum has jointed appendages?
Arthropoda.
19
Why is Arthropoda the largest phylum?
Due to adaptability, exoskeleton and jointed appendages.
20
Name the respiratory pigment of Arthropoda
Haemocyanin.
21
What is unique feature of Mollusca?
Presence of mantle and shell.
22
What is radula?
A rasping organ for feeding in Mollusca.
23
Name the system used for locomotion in Echinodermata
Water vascular system.
24
Why are echinoderms called spiny skinned animals?
Because of calcareous spines on body surface.
25
Which phylum is exclusively marine?
Echinodermata.
26
Define notochord
Notochord is a rod-like structure present on dorsal side.
27
Name the phylum having notochord
Chordata.
28
List the basic chordate features
Notochord, dorsal hollow nerve cord, pharyngeal slits and post-anal tail.
29
Name the three subphyla of Chordata
Urochordata, Cephalochordata and Vertebrata.
30
In which group is notochord present only in larval stage?
Urochordata.
31
In which group does notochord persist throughout life?
Cephalochordata.
32
What replaces notochord in vertebrates?
Vertebral column.
33
Name the superclass of Vertebrata
Pisces, Amphibia, Reptilia, Aves and Mammalia.
34
What is the major difference between chordates and non-chordates?
Presence of notochord.
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