Zoology

Zoology
Sensory organs and nervous system arises from the
mesoderm
ectoderm
endoderm
germ cell
Author: rikazzz Comment
Zoology
Gastrin and secretin are hormones of
placenta
digestive tract
heart
kidney
Author: rikazzz Comment
Zoology
Which organism has 42 chromosomes?
chicken
rat
frog
cat
Author: rikazzz Comment
Zoology
Environmental changes i.e. earthquakes, floods, or droughts, resulting in a sharp reduction in size of population, resulting process is known as
bottleneck effect
extinct species
endangered species
fossils
Author: rikazzz Comment
Zoology
A symbiosis relationship in which one organism neither getting benefit nor harm but one is benefitted is called
commensalism
parasites
mutualism
symbiosis
Author: rikazzz Comment
Zoology
Pellicle in Paramecium is a thick
fat coat
lipid coat
carbohydrate coat
protein coat
Author: rikazzz Comment
Zoology
During a chemical communication, species using a chemical to attract animal of opposite sex but of same species is called
hormones
chemical messenger
pheromones
nerves
Author: rikazzz Comment
Zoology
A membrane-bound structure, at tip of head of a sperm, helping in digesting outer surface of egg, called as
sperm
acrosome
head of sperm
base of ova
Author: rikazzz Comment
Zoology
Capability to control body temperature is called
osmoregulation
thermodynamics
thermoregulation
regulation
Author: rikazzz Comment
Zoology
Heart of normal adult beats about
70 times/day
80 times/day
40 times/day
100 times/day
Author: rikazzz Comment

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