Q1
Source: CSIR NET 2020, Session I
The common cuckoo, a parasitic bird, lays eggs in the nests of other bird species. Soon after the cuckoo’s egg hatches, the chick shoves the nest owner’s eggs out of the nest. this is an example of :
a. Habituation
b. Imprinting
c. Innate behaviour
d. Operant conditioning
Statement Analysis
a. Habituation
Animals stop responding to harmless repeated behaviours
b. Imprinting
Animals form strong attachments to parents, habitats, or specific cues
c. Innate behaviour
Genetically programmed, instinctive actions performed automatically by animals without prior learning or experience
d. Operant conditioning
A learning process where animals modify their voluntary behavior based on environmental consequences (rewards or punishments), aiding survival
Correct Answer: Option C: Innate behaviour
The cuckoo chick does not learn this behaviour it is hardwired and automatic, ensuring its survival by eliminating competition for food.
Q2
Source: CSIR NET June 2012
Among the following events in the history of life
a. Prokaryatic cell
b. Eukaryotic cell
c. Organic selection
d. Organic molecules
e. Self- replicating molecules
Which is the correct chronological order?
a. d,e,c,a,b
b. d,e,a,b,c
c. e,d,a,c,b
d. d,e,a,c,b
How to Think About It
The origin of life follows a logical progression:
First, the ability to replicate
Then formation of complex molecules
Followed by cellular life
And eventually evolutionary processes and complexity
Correct Answer: Option C – e, d, a, c, b
e. Self-replicating molecules = foundation of life
d. Organic molecules = increasing chemical complexity
a. Prokaryotic cells = first living cells
c. Organic selection = evolutionary refinement
b. Eukaryotic cells = complex cellular organization
Thanks for sharing.