Q. No.A male insect mistakes an orchid flower to be female due to its shape and performs the act of copulation and induces pollination. This is an example of:
1. Mimicry
2. Pseudocopulation
3. Pseudopollination
4. None
1. Mimicry
2. Pseudocopulation
3. Pseudopollination
4. None
A keystone species is:
| 1. | A common species that has plenty of biomass, yet has a fairly low impact on the community's organisation. |
| 2. | A rare species that has minimal impact on the biomass and on other species in the community. |
| 3. | A dominant species that constitutes a large proportion of the biomass and which affects many other species. |
| 4. | A species that makes up only a small proportion of the total biomass of a community yet has a huge impact on the community's organisation and survival. |
Certain characteristic demographic features of developing countries are:
| 1. | High fertility, high density, rapidly rising mortality rate, and very young age distribution |
| 2. | High infant mortality, low fertility, uneven population growth, and a very young age distribution |
| 3. | High mortality high density, uneven population growth, and a very old age distribution |
| 4. | High fertility, low or rapidly falling mortality rate, rapid population growth, and a very young age distribution |
The plant having the largest flower is:
1. Total stem parasite
2. Epiphyte
3. Total root parasite
4. Partial stem parasite
What will happen if the number of organisms increased at a place:
1. Inter-species competition
2. Intra-species competition
3. Both
4. None
In a population, unrestricted reproductive capacity is called:
1. Biotic potential
2. Fertility
3. Carrying capacity
4. Birth rate
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
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
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