Organisms and Populations questions
349 published questions with worked solutions.
- Refer to the given table summarising interactions between organism 1 and organism 2 (Benefit-Benefit = Mutualism, Benefit-Harm =...
- Which of the following is not an example of a prey-predator relationship?
- The competitive exclusion principle, stating that an inferior species is eventually eliminated after prolonged competition, was...
- Two species competing for the same resource can avoid competition by choosing different habits. This phenomenon is called _____...
- When two similar species live in the same area, they may evolve to become more different in order to
- In laboratory experiments, two Paramecium species (species 1 and species 2) were grown alone and in the presence of the other...
- Autecology is the study of the
- In 2005, for each of the 14 million people present in a country, 0.028 were born and 0.008 died during the year. Using the...
- Amensalism is an association between two species where
- Which one of the following organisms reproduces sexually only once in its lifetime?
- To determine the effect of intraspecific competition on the growth of Eucalyptus dives saplings, two sets of pots were used: Set...
- Refer to the given dichotomous key for classifying population interactions: 1(a) Positive interaction → go to II; (b) Negative...
- Adaptations in an organism are meant for
- The 'Verhulst-Pearl' equation is associated with the equation
- A decline in population size will occur when
- Match the columns: species X, species Y interactions: (A) +,+ (B) +,- (C) 0,- (D) +,0. Column II: (i) Commensalism (ii)...
- Statement 1: Prolonged intraspecific competition causes an increase in the size of the niche of a population. Statement 2: In...
- Statement 1: A bell-shaped age pyramid represents a stable population. Statement 2: In a stable population, the proportion of...
- Statement 1: A population growing in a habitat with limited resources shows initially a lag phase, followed by phases of...
- Statement 1: Predators maintain prey populations under control. Statement 2: Predators reduce the intensity of competition among...
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