CBSE Class 9 Answered
(a) What are vectors?
(b) In many species of mosquitoes the males do not prefer human blood, but females do. State why?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(a) Animals that carry the infecting agents from a sick person to another potential host are called vectors.
(b) Females need highly nutritious food (in the form of blood) to lay mature eggs.
Answered by | 04 Jun, 2014, 03:23: PM
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