| Question (1):
Alternative forms of a gene are called _____________. |
| 1. |
loci |
| 2. |
multiples
|
| 3. |
chromosomes |
| 4. |
alleles |
|
| Ans: 4 |
|
| Question (2):
Heredity or inheritance of specific traits became clearer due to |
| 1. |
Lamarck's theory |
| 2. |
Mendel worked on garden peas
|
| 3. |
Darwinism |
| 4. |
Neo-Darwinism |
|
| Ans: 2 |
|
| Question (3):
Which of these is homozygous recessive? |
|
|
| Ans: 2 |
|
| Question (4):
What will be the genotypic ratio of the cross between Rr and rr? |
| 1. |
1:2:1 |
| 2. |
3:1
|
| 3. |
1:1 |
| 4. |
1:1:1 |
|
| Ans: 3 |
|
| Question (5):
What will be the genotypic ratio of the cross between Rr and Rr? |
| 1. |
1:1 |
| 2. |
3:1
|
| 3. |
1:2:1 |
| 4. |
1:1:1 |
|
| Ans: 3 |
|
| Question (6):
The offspring resulting from a cross between two pure homozygous recessives would be _______. |
| 1. |
50% homozygous recessive and 50% homozygous dominant |
| 2. |
75% homozygous recessive and 25% heterozygous dominant
|
| 3. |
75% homozygous recessive and 25% homozygous dominant |
| 4. |
100% homozygous recessive |
|
| Ans: 4 |
|
| Question (7):
On what cellular structures are genes in eukaryotes carried? |
| 1. |
Endoplasmic reticulum |
| 2. |
Nuclear membrane
|
| 3. |
Chromosomes |
| 4. |
Mitochondria |
|
| Ans: 3 |
|
| Question (8):
Which of the following sentences is true about the evolutionary process? |
| 1. |
There is no real 'progress' in the idea of evolution. |
| 2. |
humans are unique, a totally new type of organism.
|
| 3. |
progress is nature's religion. |
| 4. |
Evolution of life forms was rapid in the beginning ages. |
|
| Ans: 1 |
|
| Question (9):
Microevolution takes place due to |
| 1. |
somatogenic variation |
| 2. |
blastogenic variation
|
| 3. |
continuous variation |
| 4. |
Successive variation |
|
| Ans: 2 |
|
| Question (10):
In man the chromosome number is 46. How many chromosomes are present in man's muscle cells? |
| 1. |
23 |
| 2. |
46
|
| 3. |
69 |
| 4. |
variable |
|
| Ans: 2 |
|
| Question (11):
The difference between Homo sapiens and the Homo erectus was ____. . |
| 1. |
Homo sapiens originated in Africa while Homo erectus was in Asia |
| 2. |
Homo eructus were much smaller in size than homo sapiens.
|
| 3. |
Homo eructus stayed in Africa while Homo sapiens did not |
| 4. |
The size of their brain of Homo eructus was smaller to homo sapiens |
|
| Ans: 4 |
|
| Question (12):
The component of a chromosome that controls heredity is ____. |
| 1. |
proteins |
| 2. |
histones
|
| 3. |
DNA |
| 4. |
RNA |
|
| Ans: 3 |
|
| Question (13):
Speciation takes place when variation occurs with |
| 1. |
mood changes |
| 2. |
death of an organism
|
| 3. |
changes due to accidents |
| 4. |
geographical isolation |
|
| Ans: 4 |
|
| Question (14):
Number of chromosomes in a human male is _________. |
| 1. |
23 |
| 2. |
23 pairs
|
| 3. |
22 pairs + XY |
| 4. |
22 pairs |
|
| Ans: 3 |
|
| Question (15):
By studying analogous structures we look for ______. |
| 1. |
similarities in appearance and function but different in structure |
| 2. |
similarities in appearance bur differences if functions
|
| 3. |
Similarities in organ structure |
| 4. |
Similarities in cell make up |
|
| Ans: 1 |
|
| Question (16):
__________ was a predecessor of Darwin's and developed the theory of acquired characteristics. |
| 1. |
Weismann |
| 2. |
Mendel
|
| 3. |
Malthus |
| 4. |
Lamarck |
|
| Ans: 4 |
|
| Question (17):
Which of these is not a living fossil? |
| 1. |
Archaeopteryx |
| 2. |
Duck-billed platypus
|
| 3. |
Lungfish |
| 4. |
Frog |
|
| Ans: 1 |
|
| Question (18):
Which of the following are not examples of analogous structures? |
| 1. |
Wings of bat and butterfly |
| 2. |
Wings of bat and forelimb of cattle
|
| 3. |
Thorn and spine |
| 4. |
Tendril of Lathyrus and tendril of Gloriosa |
|
| Ans: 2 |
|
| Question (19):
The scientist who cut off the tails of mice of successive generations to prove Lamarck's theory wrong was _____. |
| 1. |
Weismann |
| 2. |
Haeckel
|
| 3. |
Darwin |
| 4. |
Wallace |
|
| Ans: 1 |
|
| Question (20):
Human being belongs to the species of_____. |
| 1. |
Homo erectus |
| 2. |
Homo habillis
|
| 3. |
Homo sapiens |
| 4. |
Hominidae |
|
| Ans: 3 |
|
| Question (21):
Links between organisms that show branching pattern of evolutionary relationships are shown by_____. |
| 1. |
living fossils |
| 2. |
comparative embryology
|
| 3. |
phylogenetic trees |
| 4. |
two fossil layerss |
|
| Ans: 3 |
|
| Question (22):
Speciation is the evolutionary process by which _____. |
| 1. |
a new gene pool is formed |
| 2. |
evolutionary paths of species converge
|
| 3. |
hybrids species form |
| 4. |
Shows up differences in physical traits |
|
| Ans: 1 |
|
| Question (23):
Non geographic speciation can be found in _____. |
| 1. |
parapatric speciation |
| 2. |
peripatric speciation
|
| 3. |
allopatric speciation |
| 4. |
sympatric speciation |
|
| Ans: 1 |
|
| Question (24):
Evidences of evolutionary relationships is found in ______. |
| 1. |
atmosphere |
| 2. |
fossils
|
| 3. |
ocean beds |
| 4. |
rocks |
|
| Ans: 2 |
|
| Question (25):
In dogs the chromosome number is 78. How many chromosomes are present in the dog sperm? |
| 1. |
78 |
| 2. |
39
|
| 3. |
cannot determine from this information |
| 4. |
variable |
|
| Ans: 1 |
|
| Question (26):
Homologous chromosomes which are similar in both the sexes are called ______. |
| 1. |
sex chromosomes |
| 2. |
autosomes
|
| 3. |
allosomes |
| 4. |
androsomes |
|
| Ans: 2 |
|
