The zone of atmosphere in which the ozone layer is present is called
ionosphere
mesophere
stratosphere
stratosphere
C.
stratosphere
The ozone layer is mainly found in the lower portion of the stratosphere, i.e., approximately 20-30 km above the earth, though its thickness varies seasonally and geographically ozone layer acts as a shield absorbing UV rays from the sun.
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
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
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 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
