An alga which can be employed as food for human beings:
1. Ulothrix
2. Chlorella
3. Spirogyra
4. Polysiphonia
Which vector can clone only a small fragment of DNA?
1. Bacterial artificial chromosome
2. Yeast artificial chromosome
3. Plasmid
4. Cosmid
An example of ex-situ conservation is:
1. National park
2. Seed bank
3. Wildlife sanctuary
4. Sacred grove
A location with luxuriant growth of lichens on the trees indicates that the:
1. Trees are very healthy
2. Trees are heavily infested
3. Location is highly polluted
4. Location is not polluted
Match the following and select the correct option:
Column I | Column II | ||
(a) | Earthworm | (i) | Pioneer species |
(b) | Succession | (ii) | Detrivore |
(c) | Ecosystem service | (iii) | Natality |
(d) | Population growth | (iv) | Pollination |
1. A-(i), B-(ii), C-(iii), D-(iv)
2. A-(i), B-(ii), C-(iii), D-(iv)
3. A-(iii), B-(ii), C-(iv), D-(i)
4. A-(ii), B-(i), C-(iv), D-(iii)
A species facing extremely high risk of extinction in the immediate future is called:
1. Vulnerable
2. Endemic
3. Critically Endangered
4. Extinct
The zone of atmosphere in which the ozone layer is present is called:
1. Ionosphere
2. Mesosphere
3. Stratosphere
4. Troposphere
The organisation which publishes the Red List of species is:
1. | ICFRE | 2. | IUCN |
3. | UNEP | 4. | WWF |
Select the Taxon mentioned that represents both marine and freshwater species:
1. Echinoderms
2. Ctenophora
3. Cephalochordata
4. Cnidaria
Which one of the following living organisms completely lacks a cell wall?
1. Cyanobacteria
2. Sea- fan (Gorgonia)
3. Saccharomyces
4. Coelenterata algae