A location with luxuriant growth of lichens on the trees indicates that the
trees are very healthy
trees are heavily infested
the location is highly polluted
the location is highly polluted
D.
the location is highly polluted
The situation suggests that the site is no polluted as lichens are the bioindicators for air pollution. These are the living organisms that respond in an especially clear way to a change in the environment. Te lichens are useful indicators of especially SO2 pollution because they derive their water and essential nutrients mainly from the atmosphere rather than from the soil.
In vitro clonal propagation in plants is characterised by
PCR and RAPD
Northern blotting
Electrophoresis and HPLC
Electrophoresis and HPLC
An example of ex-situ conservation is
National Park
Seed bank
wildlife Sanctuary
wildlife Sanctuary
Match the following and select the correct option.
|
Column I
|
Column II |
||
|
a |
Earthworm |
1. |
Pioneer species |
|
b. |
Succession |
2. |
Detritivore |
|
c. |
Ecosystem service |
3. |
Natality |
|
d. |
Population growth |
4. |
Pollination |
|
A |
B |
C |
D |
|
1 |
2 |
3 |
4 |
|
A |
B |
C |
D |
|
4 |
1 |
3 | 2 |
|
A |
B |
C |
D |
|
3 |
2 | 4 | 1 |
|
A |
B |
C |
D |
|
3 |
2 | 4 | 1 |
A species facing extremely high risk of extinction in the immediate future is called
Vulnerable
endemic
critically endangered
critically endangered
The zone of atmosphere in which the ozone layer is present is called
ionosphere
mesophere
stratosphere
stratosphere
The initial step in the digestion of milk in humans is carried out by?
Lipase
Trypsin
Diplotene
Diplotene
Fructose is absorbed into the blood through mucosa cells of intestine by the process called
active transport
facilitated transport
simple diffusion
simple diffusion
The shared terminal duct of the reproductive and urinary system in the human male is
Urethra
Ureter
Vas deferens
Vas deferens
