Two opposite forces operate in the growth and development of every population. One of them relates to the ability to reproduce at a given rate. The force opposing it is called:
1. | Morbidity | 2. | Fecundity |
3. | Biotic potential | 4. | Environmental resistance |
Mycorrhiza is an example of:
1. Symbiotic relationship
2. Ectoparasitism
3. Endoparasitism
4. Decomposers
Choose the correct match
Bladderwert, sundew, venus flytrap:
1. Nepanthese, Dionea, Drosera
2. Nepanthese, Utricularia, Vanda
3. Utricularia, Drosera, Dionea
4. Dionea, Trapa, Vanda
Which of the following is a correct pair:
1. Cuscuta – parasite
2. Dischidia – insectivorous
3. Opuntia – predator
4. Capsella – hydrophyte
Two different species cannot live for a long duration in the same niche or habitat. This is:
1. Allen's law
2. Gloger's rule
3. Competitive exclusion principle
4. Weismann's theory
Which type of association is found between entomophilous flower and pollinating agent:
1. Mutualism
2. Commensalism
3. Cooperation
4. Co-evolution
The semilog of per minute growing bacteria is plotted against time. What will the shape of the graph be:
1. Sigmoid
2. Hyperbolic
3. Ascending straight line
4. Descending straight line
Choose the correct sequence of stages of the growth curve for Bacteria:
1. Leg, Log, stationary, Decline phase
2. Leg, Log, Stationary phase
3. Stationary, Leg, Log, Decline phase
4. Decline, Leg, Log phase
In a population, unrestricted reproductive capacity is called:
1. Biotic potential
2. Fertility
3. Carrying capacity
4. Birth rate
What will happen if the number of organisms increased at a place:
1. Inter-species competition
2. Intra-species competition
3. Both
4. None