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- Question 1 of 20
Assume that an asexually propagating fungus has three colors of colonies, white, black and red. Such variability in color may have originated due to:CorrectIncorrect
- Question 2 of 20
A team of conservation biologists, surveying a population of frogs on an island, captured and marked 312 individuals in the first sample. In a second sampling, 3 days later, the team caught 140 individuals of which 26 were previously marked. The total number of frogs on the island is estimated to be ________. (Use decimal notation, not fractions or percentage)CorrectIncorrect
- Question 3 of 20
The following equation represents a hypothetical relationship between fitness (w) and shoot:root ratio (r) in individuals of a plant species: w = 10r-10r*r. At what value of shoot:root ratio (r), do these plants achieve maximum fitness? (Use decimal notation, not fractions or percentage)CorrectIncorrect
- Question 4 of 20
The relative abundance of C3 relative to C4 plant species increases with latitude because of the associated temperature gradient. A study in North America found that at 42° North, C3 plants become more abundant than C4 plants. Given an increase in mean global temperatures by 10°C and no other changes in environmental conditions, the latitude at which C3 plants become more abundant:CorrectIncorrect
- Question 5 of 20
Which of the following processes captures the key difference between meta population versus single population approaches to study population dynamics?CorrectIncorrect
- Question 6 of 20
Among forest of following states tree diversity (species richness per unit area) is high in
- Question 7 of 20
Many agriculturally important plants belong to which of the following families?
- Question 8 of 20
In India Parthenium hysterophorus ,Lantana camara and prosopis juliflora are examples of which of the following species?
- Question 9 of 20
Acid rain can be attributed to which of the following factors?
P.Human alteration of Global S cycle
Q.Human alteration of Global N cycle
R.increased average global temperature
S.natural causes such as fluctuations in sunspots
T.natural causes such as volcanismCorrectIncorrect
- Question 10 of 20
Periodic glaciation at a global scale is a feature of which geological age?CorrectIncorrect
- Question 11 of 20
Carbon fixation reactions using RUBISCO and PEP occur inCorrectIncorrect
- Question 12 of 20
Which of the following processes typically does not contribute to increase in genetic variation?CorrectIncorrect
- Question 13 of 20
Maximum heterozygosity at neutral locus with two alleles given random mating isCorrectIncorrect
- Question 14 of 20
A predator encounters a group of 10 prey and kills one of them to feed.The probability of getting killed is the same for all prey individuals.The probability that a given prey is killed by predator isCorrectIncorrect
- Question 15 of 20
Acoustic signals degrade most rapidly in which of the following environments?CorrectIncorrect
- Question 16 of 20
The nodes of Ranvier areCorrectIncorrect
- Question 17 of 20
Plasmodesmata are found inCorrectIncorrect
- Question 18 of 20
Many agriculturally important insect pests belong to which of the following groups?
- Question 19 of 20
The ratio of Potential Evapotranspiration PET to precipitation PT is expected to be more than 1 that is PET/PT > 1in which of the following biomes?CorrectIncorrect
- Question 20 of 20
Parental care may be provided by only males or females or both.Comparing parental care between mammals ,birds and fishes male only care is most common is _________,female only care is most common in _______and biparental care is most common in _________CorrectIncorrect