Reproductive success of individuals in a population is likely to be skewed under all the following conditions, EXCEPT when (1) Females are choosy. (2) male-male competition is intense. (3) pair-bonding […]
Category: CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Morphological Similarity in Bird Species with Equal Parental Care: The Evolutionary Link
In bird species where both parents contribute equally to parental care, generally (1) males are larger than females (2) females are more colorful than males (3) females are larger than […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Understanding Bateman’s Principle: The Foundation of Sexual Selection in Evolutionary Biology
Which one of the following statements best describes Bateman’s principle? (1) Female gametes (eggs) are costlier than male gametes (sperms). (2) Reproductive variance is greater in males than in females. […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
The Limits of Polyandry: Which Benefit Is Least Likely for Females?
Which of the following is NOT a benefit for the female adopting polyandry? (1) Greater probability of getting all her eggs fertilized. (2) Ability to receive more resources from the […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Evolutionary Associations of Parental Care in Animals: Why Smaller Clutch Size Is Key
Evolutionarily, with which of the following could parental care in animals be associated? (1) Polygamy. (2) Greater longevity. (3) Semelparity. (4) Smaller clutch size. The Evolutionary Logic Behind Parental […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
What Does NOT Favor Male Monogamy? Understanding the Key Drivers of Monogamous Behavior in Animals
Which one of the following conditions is NOT likely to favour male monogamy? (1) When the male has to guard his mate against mating by another male. (2) When the […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Monogamy and the Absence of Sexual Conflict: When Males and Females Share Reproductive Interests
In which of the following mating systems there is likely to be NO conflict of interest over reproductive success between the sexes? (1) polyandry (2) monogamy (3) promiscuity (4) polygamy […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
When Is Male Parental Care Observed? The Role of Lifelong Pair Bonds in Animal Societies
82. Male parental care is expected to observed during (1) Polygynous species (2) Small population size (3) Life long bond pairing (4) Reverse sexual dimorphism The Evolutionary Puzzle of […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Reversed Sexual Dimorphism in Animals: When Role Reversal Drives Female Dominance
Reversed sexual dimorphism among animals is expected to be seen when there is (1) Strong female choice (2) Skewed sex ratio (3) Low number of males (4) Change in roles […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
High Maternal Investment: Why Slow Development and Low Fecundity Define This Life History Strategy
Which of the following pairs of traits is most likely in a species when maternal investment is very high? (1) Multiple reproductive events and high maternal mortality (2) Slow development […]
