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b



Which of the following number is a perfect square?
A) 540                                  
B) 784  
C) 364                                  
D) 15628

b



A car is moving with a speed of 90 km/hr. What will be tis speed in meter per second?
A) 25 m/s                             
B) 20 m/s
C) 15 m/s                             
D) 10 m/s

a




b



Which planet of the solar system does not have any Moon?
A) Saturn                             
B) Mars
C) Jupiter                             
D) Venus

d

Explanation: Mercury and Venus do not have any moon. 


_______ is/are the relationship between two organisms in which both are benefitted and more of them is harmed.
A) Mutualism     
B) Parasitism
C) Predation                        
D) All of these

a

Explanation: Mutualism is an association of organisms wherein both are benefitted.
Omnivory refers to act of feeding on plants and animals; plants and animals are negatively affected.
Parasitism is the relationship where one organism is benefitted at the expense of other.
Predation refers to the act of feeding on other animals; predator is benefitted at expense of prey.
Commensalism refers to the relationship wherein one organism is benefitted while other remains unaffected.