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

Which type of association is found between entomophilous flower and pollinating agent:

1. Mutualism

2. Commensalism

3. Cooperation

4. Co-evolution

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 of the following is a correct pair: 

1. Cuscuta – parasite

2. Dischidia – insectivorous

3. Opuntia – predator

4. Capsella – hydrophyte

Choose the correct match

Bladderwert, sundew, venus flytrap:

1. Nepanthese, Dionea, Drosera

2. Nepanthese, Utricularia, Vanda

3. Utricularia, Drosera, Dionea

4. Dionea, Trapa, Vanda

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: 

Mycorrhiza is an example of:

1. Symbiotic relationship

2. Ectoparasitism

3. Endoparasitism

4. Decomposers

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