Biology Test 50

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Biology Test 50

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Question 1/30
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Directions For Questions

A-(4),B-(3),C-(1),D-(2)

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Match List-I with List-II and select the correct answer using the codes given below the lists : List-I List-II A. Theory of Mutation 1. Beadle

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A
A-(3),B-(4),C-(1),D-(2)

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B
A-(4),B-(3),C-(1),D-(2)

Correct

Wrong

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C
A-(4),B-(3),C-(2),D-(1)

Correct

Wrong

Skipped
D
A-(3),B-(4),C-(2),D-(1)

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Solutions
A-(4),B-(3),C-(1),D-(2)
Question 2/30
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Directions For Questions

natural selection

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The mechanism by which evolution occurs is called ?

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A
creationism

Correct

Wrong

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B
natural selection

Correct

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C
interdependence

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D
metabolism

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Solutions
natural selection
Question 3/30
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Directions For Questions

120 days

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Life of a/an RBC in human blood is ____ ?

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A
30 days

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B
15 hours

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C
120 days

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D
None of these

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Solutions
120 days
Question 4/30
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Directions For Questions

Rice

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Which one among the following is not a good source of nutritional calcium ?

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A
Rice

Correct

Wrong

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B
Ragi

Correct

Wrong

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C
Skimmed milk

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D
Egg

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Solutions
Rice
Question 5/30
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Directions For Questions

phylum

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In plant taxonomy, a division is the equivalent to _______________ .

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A
family

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B
order

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C
class

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D
phylum

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Solutions
phylum
Question 6/30
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Directions For Questions

Egg

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The richest source of vitamin A is?

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A
Mango

Correct

Wrong

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B
Apple

Correct

Wrong

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C
Fat

Correct

Wrong

Skipped
D
Egg

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Solutions
Egg
Question 7/30
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Directions For Questions

Mandible

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The only movable bone in the skull is?

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A
Maxilla

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B
Nasal

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C
Frontoparietal

Correct

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D
Mandible

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Solutions
Mandible
Question 8/30
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Directions For Questions

30 individuals per square kilometer

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A small farming community in Texas covers 14 square kilometers. There are 420 individuals who live within the town limits. What is the population density of this community?

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A
0.03 individuals per square kilometer

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B
53 individuals per square kilometer

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C
30 individuals per square kilometer

Correct

Wrong

Skipped
D
10.24 individuals per square kilometer

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Solutions
30 individuals per square kilometer
Question 9/30
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Directions For Questions

9 and 22

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In humans, Philadelphia chromosome formed by reciprocal translocation between chromosomes

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A
9 and 21

Correct

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B
9 and 20

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C
9 and 22

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D
20 and 10

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Solutions
9 and 22
Question 10/30
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Directions For Questions

Chemical origin

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Which one of the following theories on the origin of life is mostly accepted?

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A
Chemical origin

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B
Steady state

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C
Special creation

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D
Panspermia

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Solutions
Chemical origin
Question 11/30
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Directions For Questions

Arbor vitae

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Tree of life is:

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A
Arbor vitae

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Wrong

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B
Pons varolii

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C
Organ of Corti

Correct

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D
Diencephalons

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Solutions
Arbor vitae
Question 12/30
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Directions For Questions

xylem and phloem occur on the different radii

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Radical vascular bundles are those in which ______.

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A
phloem is surrounded by xylem

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B
xylem and phloem occur on the same radius

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C
xylem and phloem occur on the different radii

Correct

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D
xylem is surrounded by phloem

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Solutions
xylem and phloem occur on the different radii
Question 13/30
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Directions For Questions

reflects green light

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A plant leaf appears to be green because it _____.

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A
reflects all but yellow and blue light

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B
reflects green light

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C
absorbs red and yellow light

Correct

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Skipped
D
absorbs green light

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Solutions
reflects green light
Question 14/30
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Directions For Questions

Habitat destruction

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Most of the endangered species are the victims of?

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A
Habitat destruction

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B
Over-hunting

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C
Acid rain

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D
Competition with introduced species

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Solutions
Habitat destruction
Question 15/30
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Directions For Questions

pectoral girdle

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The upper limbs are attached to the axial skeleton and supported by the ________.

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A
sternum

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Wrong

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B
rib cage

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C
pectoral girdle

Correct

Wrong

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D
pelvic girdle

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Solutions
pectoral girdle
Question 16/30
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Directions For Questions

A is false but R is true

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Assertion (A): In human beings, the females play a major role in determining the sex of the offspring.Reason (R): Women have two 'X' chromosomes.

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A
Both A and R are true and R is the correct explanation of A

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B
Both A and R are true but R is NOT the correct explanation of A

Correct

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C
A is true but R is false

Correct

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Skipped
D
A is false but R is true

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Solutions
A is false but R is true
Question 17/30
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Directions For Questions

An antigen-antibody reaction

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Which of the following is fundamentally the Rh factor?

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A
An vitamin deficiency

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B
A form of anaemia

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C
An antigen-antibody reaction

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D
A hormonal reaction

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Solutions
An antigen-antibody reaction
Question 18/30
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Directions For Questions

Placenta

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Which of the following is not present in the blood ?

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A
RBCs

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B
Plasma

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Wrong

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C
Placenta

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D
WBCs

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Solutions
Placenta
Question 19/30
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Directions For Questions

2 only

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Consider the following statements: 1. Meningococcal Meningitis is transmitted from person to person by mosquito bites. 2. Vomitting and neck pain are two of the symptoms of Meningococcal Meningitis Which of the statements given above is/are correct ?

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A
1 only

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B
2 only

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C
Both 1 and 2

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D
Neither 1 nor 2

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Solutions
2 only
Question 20/30
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Directions For Questions

Hydrogen

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Which of the gas is not known as green house gas?

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A
Hydrogen

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B
Methane

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C
Nitrous oxide

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D
Carbon dioxide

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Solutions
Hydrogen
Question 21/30
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Directions For Questions

Estrogen

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Which of the following hormones is a steroid?

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A
Estrogen

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Wrong

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B
Insulin

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Wrong

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C
Glucagon

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D
Thyroxine

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Solutions
Estrogen
Question 22/30
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Directions For Questions

clumped.

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The most common kind of dispersion in nature is..

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A
uniform.

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B
clumped.

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C
dispersive.

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D
random.

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Solutions
clumped.
Question 23/30
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Directions For Questions

1 and 2 only

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Consider the following statements: 1. The Taxus tree naturally found in the Himalayas. 2. The Taxus tree is listed in the Red Data Book. 3. A drug called " taxol" is obtained from Taxus tree is effective against Parkinson's disease. Which of the statements given above is/are correct?

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A
1 only

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Wrong

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B
1 and 2 only

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C
2 and 3 only

Correct

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D
1,2 and 3

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Solutions
1 and 2 only
Question 24/30
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Directions For Questions

Green vegetables

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The most abundant source of iron is?

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A
Milk

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Wrong

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B
Eggs

Correct

Wrong

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C
Green vegetables

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D
Beans

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Solutions
Green vegetables
Question 25/30
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Directions For Questions

Cadmium

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Which of the metals causes Itai-itai disease?

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A
Cobalt

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B
Copper

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Wrong

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C
Chromium

Correct

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D
Cadmium

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Solutions
Cadmium
Question 26/30
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Directions For Questions

Calcium and Phosphorus

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Which of the following are required for the formation of bones and teeth ?

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A
Sodium and Calcium

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B
Sodium and Potassium

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C
Iron and Calcium

Correct

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D
Calcium and Phosphorus

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Solutions
Calcium and Phosphorus
Question 27/30
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Directions For Questions

26

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What is diploid number of chromosomes in Frog?

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A
26

Correct

Wrong

Skipped
B
28

Correct

Wrong

Skipped
C
24

Correct

Wrong

Skipped
D
20

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Solutions
26
Question 28/30
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Directions For Questions

immigration.

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The movement of organisms into a range is called..

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A
immigration.

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Skipped
B
emigration.

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C
population shift.

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D
carrying capacity.

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Solutions
immigration.
Question 29/30
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Directions For Questions

somatic fusion of their cells

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Sexual incompatability between different species of plant may be overcome by.

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A
recombinant DNA technologu

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B
the use of mutagens

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C
somatic fusion of their cells

Correct

Wrong

Skipped
D
the use of polyploid parents plants

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Solutions
somatic fusion of their cells
Question 30/30
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Directions For Questions

280 days

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The gestation period of cow is?

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A
123 days

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Wrong

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B
280 days

Correct

Wrong

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C
300 days

Correct

Wrong

Skipped
D
356 days

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Solutions
280 days

Question 1/30

A-(3),B-(4),C-(1),D-(2)

A-(4),B-(3),C-(1),D-(2)

A-(4),B-(3),C-(2),D-(1)

A-(3),B-(4),C-(2),D-(1)

Question 2/30

creationism

natural selection

interdependence

metabolism

Question 3/30

30 days

15 hours

120 days

None of these

Question 4/30

Rice

Ragi

Skimmed milk

Egg

Question 5/30

family

order

class

phylum

Question 6/30

Mango

Apple

Fat

Egg

Question 7/30

Maxilla

Nasal

Frontoparietal

Mandible

Question 8/30

0.03 individuals per square kilometer

53 individuals per square kilometer

30 individuals per square kilometer

10.24 individuals per square kilometer

Question 9/30

9 and 21

9 and 20

9 and 22

20 and 10

Question 10/30

Chemical origin

Steady state

Special creation

Panspermia

Question 11/30

Arbor vitae

Pons varolii

Organ of Corti

Diencephalons

Question 12/30

phloem is surrounded by xylem

xylem and phloem occur on the same radius

xylem and phloem occur on the different radii

xylem is surrounded by phloem

Question 13/30

reflects all but yellow and blue light

reflects green light

absorbs red and yellow light

absorbs green light

Question 14/30

Habitat destruction

Over-hunting

Acid rain

Competition with introduced species

Question 15/30

sternum

rib cage

pectoral girdle

pelvic girdle

Question 16/30

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

A is true but R is false

A is false but R is true