Subphylum Chelicerata: Class Arachnida
In spiders, female secrets a chemical on silk web to attract male for mating is called:
estrogen
hormone
pheromones
progesterone
pheromones
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Most of arthropods are:A. viviparous
B. ovoviviparous
C. oviparous
D. all of above
Sensilla are the:
A. sensory receptors
B. appendages
C. opisthosoma
D. touch receptor
For removal of nitrogenous wastes, arachnids use Coxal glands and:
A. book lungs
B. biramous appendages
C. malpighian tubules
D. sensilla
Smooth muscles of arthropods secrete venom during
A. fertilization
B. feeding
C. stinging
D. intimation
Prosoma of spider contains chelicerae with poisonous glands and:
A. venom
B. cyanine
C. fangs
D. operculum
Process by which silk lines are produced by young spiders, caught by air current, helping in traveling at altitudes, approximately 100 km, known as:
A. silk formation
B. movement
C. flying
D. ballooning
Most members of subclass arachnids are:
A. herbivorous
B. carnivorous
C. symbiotic
D. mutualists
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