1 |
In ecosystem the role of decomposers is played by |
animals
plants
bacteria and fungi
algae
|
2 |
Consumers include: |
animals
protozoans
fungi
all of these
|
3 |
The producers of ecosystem are: |
fungi
bacteria
green plants
man
|
4 |
The factor of an ecosystem is: |
light
algae
bacteria
producers
|
5 |
All the population that live in a habitat and interact in various ways with one another are collectively called: |
ecosystem
community
biosphere
populations
|
6 |
A group of organisms of the same species inhabiting a species geographical area ta a particular time is called: |
population
community
ecosystem
species
|
7 |
The relationship between the alleles IA and IB of the blood group is: |
complete dominance
incomplete dominance
recessiveness
co-dominance
|
8 |
In dihybrid cross the genotypic ratio of F2 generation is: |
1 : 1 ; 1 : 1
1 :3 :1 : 1
1 : 2 : 2 : 1
9 : 3 : 3 : 1
|
9 |
ABO blood system is controlled by a gene I The number of alleles I.The number of alleles of this gene are: |
two
three
five
many
|
10 |
The genotype of wrinkled green seeds was: |
RRyy
RyYr
RRYY
rryy
|
11 |
How many contrasting pairs of characters of pea plant were studied bu mendel? |
one
three
five
seven
|
12 |
The are how many hydrogen bonds between cytosine and guanine? |
one
two
three
four
|