List of top Zoology Questions asked in GATE XL

Which one of the following statements describes the key function of human sweat glands?
Consider a large population of a finch species, where both small and big beak sizes are advantageous, and an intermediate beak size is maladaptive. Over a period of 10 years, which one of the following evolutionary processes is most likely to operate on the beak size of this finch population?
In certain species of salamanders, male-female pairs have multiple mating partners in a breeding season. Which one of the following terminologies accurately describes this mating system?
CREB1 is a eukaryotic transcription factor. In which one of the following compartments of the cell is CREB1 predominantly localized?
Which of the following event(s) occur(s) during translation in prokaryotes?
Match the plant products in Group 1 with the plant species in Group 2 that produce them and the respective plant parts in Group 3 where they accumulate the most.
Group 1Group 2
(P) Protocooperation(i) One species is harmed but the other is neither harmed nor benefitted
(Q) Commensalism (ii) A type of mutualism where one species is  benefitted more than the other
(R) Amensalism (iii)Both the species are benefitted but the interaction between them is not obligatory
(S) Helotism (iv) One species is benefitted without harming the other 
Match the inhibitors in Group 1 with their respective targets in Group 2.
Group 1 Group 2
(P) VirG(i) Kinase
(Q) VirA(ii) Helicase
(R) VirE(iii) Transcriptional activator
(S) VirC(iv) Single strand binding protein
Factor H, a complement regulatory protein in plasma, binds C3b and
In Michaelis-Menten's equation, if \([S] = 15 K_m\), then the ratio \( v_0/V_{max} \) is ____ (Round off to three decimal places).
Which one or more of the following statements correctly describe(s) the changes upon the addition of puromycin during eukaryotic translation?
In mammals, hematopoietic stem cells that give rise to different types of blood cells are known as
Which one or more of the following statements correctly describe(s) the changes upon the addition of puromycin during eukaryotic translation?
Factor H, a complement regulatory protein in plasma, binds C3b and
In mammals, hematopoietic stem cells that give rise to different types of blood cells are known as
Which one of the following describes the “innate behavior” of an animal?
Which one of the following animals has “Book Lungs” as a respiratory organ?
According to Abbe’s equation on microscopy, the ability to resolve two entities inside a cell by light microscopy depends on which of the following factor/s?
The average body length of Drosophila nasuta collected from Andaman and Nicobar Islands is 2 mm. From this population, a few males and females having a body length of 3 mm were selected and interbred. The average body length of the resultant progeny was 2.5 mm. The heritability (h²) of the body length in this population is ________. (round off to one decimal place)
A typical food chain involves producers, herbivores, primary carnivores, and secondary carnivores. Based on Lindeman’s law of trophic efficiency, if producers have 40 kJ of energy, the energy that will be stored in secondary carnivores is ________ kJ (round off to two decimal places).
Match the animal inactivity behaviors listed in Column I with representative animals in Column II and their definitions listed in Column III.
Column III
(a) Prolonged period of inactivity without reducing body temperature
(b) Inactivity period which accompanies extended periods of dryness
(c) Decreased metabolism with lowered body temperature occurring in daily activity cycles
(d) Decreased metabolism and lower body temperature for weeks or months
If the vital capacity (VC) of an individual is 4900 ml, the tidal volume (TV) is 500 ml, and the inspiratory reserve volume (IRV) is 3300 ml, the expiratory reserve volume (ERV) of the individual is ________ ml (in integer).
Match the animals listed in Column I with primary tissue or organ of residence in the host listed in Column II
In the human body, which of the following is/are involved in processing of a foreign antigen?
Match the cell types listed in Column I with their sources in Column II and the primary functional roles listed in Column III.
Animals can be classified as ‘specialists’ or ‘generalists’ with respect to diet and habitat selection. Which of the following organism/s belong/s to the specialist category?