NEET UG 2016 — Organisms and Populations

When does the growth rate of a population following the logistic model equal zero? The logistic model is given as $dN/dt=rN(1-N/K):$

If ' $+$ ' sign is assigned to beneficial interaction, ' $–$ ' sign to detrimental and ' $0$ ' sign to neutral interaction, then the population interaction represented by '+' '-' refers to

Gause's principle of competitive exclusion states that:

The primary producers of the deep-sea hydrothermal vent ecosystem are

Which of the following is correct for r-selected species?

The principle of competitive exclusion was stated by