Asexual and sexual reproduction, life span, ageing.
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Q1 · Reproduction in Organisms · EASY
In binary fission, a common mode of asexual reproduction in prokaryotes, the parent cell divides into two equal daughter cells. Which of the following organisms reproduces by binary fission?
Q2 · Reproduction in Organisms · EASY
A student observes that a plant in the garden produces new plants from its leaves when they fall on moist soil. This is an example of which type of asexual reproduction?
Q3 · Reproduction in Organisms · MEDIUM
During sexual reproduction in most organisms, the chromosome number is maintained constant across generations because of which two processes?
Q4 · Reproduction in Organisms · MEDIUM
In some organisms, unfertilized eggs develop into new individuals without fertilization. A male honeybee (drone) develops from an unfertilized egg while the female (worker or queen) develops from a fertilized egg. This phenomenon is called:
Q5 · Reproduction in Organisms · HARD
Ageing in organisms is often associated with the accumulation of mutations in somatic cells and decline in cellular repair mechanisms. According to current understanding, which of the following factors does NOT directly contribute to the ageing process at the cellular level?