Which of the following is not an Arthropod characteristic?

1. Jointed appendages 2. Periodic molting
3. Closed circulation 4. Articulated exoskeleton
Subtopic:  Phylum Arthropoda |
 81%
From NCERT
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Insects are not characterized by:
1. The main body segments – head, thorax and abdomen
2. Three pairs of legs
3. Two pairs of antennae
4. Excretion by Malpighian tubules

Subtopic:  Phylum Arthropoda |
 61%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Column I Column II
A. Insect reared for producing silk P. Locusta
B. Mosquito acting as vector for Dengue virus Q. Bombyx
C. Gregarious pest R. Limulus
D. Living fossil S. Aedes

Codes:
A B C D
1. Q S P R
2. Q S R P
3. P Q R S
4. R P Q S
Subtopic:  Phylum Arthropoda |
 90%
From NCERT
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Identify the correct statements regarding arthropods:
I: They are bilaterally symmetrical, triploblastic, non-segmented and pseudocoelomate animals.
II: Arthropoda is the largest phylum of Animalia and includes more than 90 % of all species on the earth that are named so far.
III: Insects are arthropods with body consisting of head, thorax and abdomen.
 
1. Only I 2. Only I and II
3. Only III 4. Only II and III
Subtopic:  Phylum Arthropoda |
 59%
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In the given diagram of the body plan of an insect, identify the parts A-F:
A B C D E F
1. Blood vessel Nerve cord Trachea Spiracles Crop Hearts
2. Blood vessel Nerve cord Trachea Spiracles Oesophagus Hearts
3. Nerve cord Blood vessel Trachea Spiracles Crop Ostia
4. Nerve cord Blood vessel Stomo-
chord
Ostia Oesophagus Spiracles
Subtopic:  Phylum Arthropoda |
 63%
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