Biology Test 55

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Biology Test 55

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Question 1/30
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Directions For Questions

Vitamin K

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Which one among the following vitamins is necessary for blood clotting?

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A
Vitamin D

Correct

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B
Vitamin A

Correct

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C
Vitamin K

Correct

Wrong

Skipped
D
Vitamin C

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Solutions
Vitamin K
Question 2/30
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Directions For Questions

Methyl alcohol

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The offending substance in the liquor tragedies leading to blindness etc.is

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A
Ethyl alcohol

Correct

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B
Amyl alcohol

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C
Benzyl alcohol

Correct

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D
Methyl alcohol

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Solutions
Methyl alcohol
Question 3/30
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Directions For Questions

They both produce carbohydrates and oxygen.

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In which way are plants in a sunny mountain meadow and sulfur bacteria in a deep-sea volcanic vent alike?

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A
They both use photosynthesis to make their own food.

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B
They both produce carbohydrates and oxygen.

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C
They both use chemosynthesis to produce their own food.

Correct

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D
They both produce carbon and hydrogen.

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Solutions
They both produce carbohydrates and oxygen.
Question 4/30
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Directions For Questions

asphyxia

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When the blood contains a high percentage of CO2 and a very low percentage of O2, the breathing stops and the person becomes unconscious. This condition is known as?

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A
suffocation

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B
asphyxia

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C
emphycema

Correct

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D
eupnoea

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Solutions
asphyxia
Question 5/30
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Directions For Questions

sympatric populations of species with similar ecological niches.

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Resource partitioning would be most likely to occur between?

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A
sympatric populations of species with similar ecological niches.

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B
allopatric populations of species with similar ecological niches.

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C
sympatric populations of a predator and its prey.

Correct

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D
allopatric populations of the same animal species.

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Solutions
sympatric populations of species with similar ecological niches.
Question 6/30
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Directions For Questions

Cornea

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In eye donation. which one of the following parts of donor's eyes is utilized ?

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A
Iris

Correct

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B
Lens

Correct

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C
Cornea

Correct

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D
Retina

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Solutions
Cornea
Question 7/30
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Directions For Questions

A is false but R is true

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Assertion (A): Unsaturated fats are more reactive compared with the saturated fats.Reason (R): Unsaturated fats have only single bonds in their structure.

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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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D
A is false but R is true

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Solutions
A is false but R is true
Question 8/30
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Directions For Questions

Surgical fusion of two adjacent vertebrae will alleviate the problem and cause no reduction in flexibility.

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Which of the following is NOT a feature of having a herniated vertebral disk?

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A
Surgical fusion of two adjacent vertebrae will alleviate the problem and cause no reduction in flexibility.

Correct

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Skipped
B
Intense back pain is caused when the slipped disk presses against the spinal cord nerves.

Correct

Wrong

Skipped
C
Surgical procedures can be performed to alleviate the pain of a damaged disk.

Correct

Wrong

Skipped
D
Herniated disks are most commonly found in the lumbar region of the back.

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Solutions
Surgical fusion of two adjacent vertebrae will alleviate the problem and cause no reduction in flexibility.
Question 9/30
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Directions For Questions

indicating relative position of genes in chromosomes

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Determination of percentage of crossing over between two linked genes is important in

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A
fixation of heterosis in organisms

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B
maintaining heterozygosity in population

Correct

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C
indicating relative position of genes in chromosomes

Correct

Wrong

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D
explaining the phenomenon of coupling and repulsion

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Solutions
indicating relative position of genes in chromosomes
Question 10/30
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Directions For Questions

Glutamic acid by valine in ??chain

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Which amino acid is substituted in sickle cell anaemia.

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A
Glutamic acid by valine in ??chain

Correct

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B
Glutamic acid by valine in ??chain

Correct

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C
Valine by glutamic acid in ??chain

Correct

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D
Valine by glutamic acid in ??chain

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Solutions
Glutamic acid by valine in ??chain
Question 11/30
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Directions For Questions

Starfish

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Tube feet is the locomotory organ in:

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A
Starfish

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B
Jelly fish

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C
Silver fish

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D
Scoliodon

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Solutions
Starfish
Question 12/30
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Directions For Questions

Insulin

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Which one of the following is not a plant hormone ?

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Skipped
A
Insulin

Correct

Wrong

Skipped
B
Cytokinin

Correct

Wrong

Skipped
C
Ethylene

Correct

Wrong

Skipped
D
Gibberellin

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Solutions
Insulin
Question 13/30
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Directions For Questions

CO2 from fossil fuels

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Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere in future?

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A
Depletion of earth's ozone layer

Correct

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B
Dust clouds from valcanoes

Correct

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C
Atomic warfare

Correct

Wrong

Skipped
D
CO2 from fossil fuels

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Solutions
CO2 from fossil fuels
Question 14/30
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Directions For Questions

Pheretima Posthuma

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Which one of the following species of earthworm is NOT recommended for vermicomposting?

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A
Perionyx excavatus

Correct

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Skipped
B
Eudrilus eugeniae

Correct

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Skipped
C
Eisenia fetidae

Correct

Wrong

Skipped
D
Pheretima Posthuma

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Solutions
Pheretima Posthuma
Question 15/30
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Directions For Questions

White blood cells

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Leukaemia or blood cancer is characterised by abnormal increase of the _____ .

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A
White blood cells

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B
Blood platelets

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C
Blood Plasma

Correct

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D
Red blood cells

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Solutions
White blood cells
Question 16/30
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Directions For Questions

Somaclonal variations

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Variations observed during tissue culture of some plants are known as

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Skipped
A
Clonal variations

Correct

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Skipped
B
Somatic variations

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C
Somaclonal variations

Correct

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D
Tissue culture variations

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Solutions
Somaclonal variations
Question 17/30
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Directions For Questions

Codons are present in m-RNA and anticodons in t-RNA

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Which one of the following is correct?

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A
Introns are present in m-RNA and exons are present in t-RNA

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B
Codons are present in m-RNA and anticodons in t-RNA

Correct

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C
Exons are present in eukaryotes while introns are present in prokaryotes

Correct

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D
Every intron is a set of three terminator codons

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Solutions
Codons are present in m-RNA and anticodons in t-RNA
Question 18/30
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Directions For Questions

backbone

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what protect the spinal cord

Correct

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A
ribacage

Correct

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B
backbone

Correct

Wrong

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C
skull

Correct

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D
skeleton

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Solutions
backbone
Question 19/30
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Directions For Questions

Thiamine

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The vitamin useful in alcoholism is:

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A
Folic acid

Correct

Wrong

Skipped
B
Thiamine

Correct

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C
Pyridoxine

Correct

Wrong

Skipped
D
Ascorbic acid

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Solutions
Thiamine
Question 20/30
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Directions For Questions

natural selection

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Of the conditions that can cause a deviation from Hardy Weinberg equilibrium, only _____ causes an adaption to the environment:

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A
natural selection

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B
genetic drift

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C
gene flow

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D
nonrandom mating

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Solutions
natural selection
Question 21/30
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Directions For Questions

Shoot tip culture

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Virus free plants can be obtained through

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A
Anitibiotic treatment

Correct

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B
Bordeaux micture

Correct

Wrong

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C
Root tip culture

Correct

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Skipped
D
Shoot tip culture

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Solutions
Shoot tip culture
Question 22/30
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Directions For Questions

nitrogen, phosphorus and potassium

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The macro-nutrients provided by inorganic fertilizers are -

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A
carbon, iron and boron

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B
nitrogen, phosphorus and potassium

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C
magnesium, zinc and iron

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D
magnesium, manganese and sulphur

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Solutions
nitrogen, phosphorus and potassium
Question 23/30
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Directions For Questions

chance

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Genetic drift occurs by______.

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Skipped
A
mutation

Correct

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Skipped
B
immigration

Correct

Wrong

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C
emigration

Correct

Wrong

Skipped
D
chance

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Solutions
chance
Question 24/30
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Directions For Questions

Kerosene

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Sodium metal is kept under______.

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A
Kerosene

Correct

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B
Petrol

Correct

Wrong

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C
Alcohol

Correct

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Skipped
D
Water

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Solutions
Kerosene
Question 25/30
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Directions For Questions

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

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Match the hormones List-I with items in List-II and select the correct answer using the codes given below the lists : List-I List-II A. Adrenalin 1. Anger,fear, danger B. Estrogen 2. Attracting partners of smell through sense C. Insulin 3. Females D. Pheromones 4. Glucose

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

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

Correct

Wrong

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

Correct

Wrong

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

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Solutions
A-(1),B-(3),C-(4),D-(2)
Question 26/30
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Directions For Questions

Iterative

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Occurrence of similar morphological forms in clade at different interval is termed as?

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A
Iterative

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B
Convergent

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Wrong

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C
Co evolution

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D
Parallel evolution

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Solutions
Iterative
Question 27/30
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Directions For Questions

Cells

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In the human body, the basic building blocks are _____ ?

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A
Bones

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B
Nerves

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C
Muscles

Correct

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Skipped
D
Cells

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Solutions
Cells
Question 28/30
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Directions For Questions

Turner’s syndrome

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In human beings 45 chromosomes/single X/XO abnormality causes

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A
Turner’s syndrome

Correct

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B
Edward’s syndrome

Correct

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Skipped
C
Down’s syndrome

Correct

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D
Klinefelter’s syndrome

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Solutions
Turner’s syndrome
Question 29/30
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Directions For Questions

Keystone species

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The species, though insignificant in number, determine the existence of many other species in a given ecosystem. Such species is known as?

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A
Extinct species

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B
Keystone species

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C
Endemic species

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D
Sacred species

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Solutions
Keystone species
Question 30/30
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Directions For Questions

the contractile vacuole disappears

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When a fresh water protozoan is placed in marine water________.

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A
the contractile vacuole disappears

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B
the contractile vacuole increases in size

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C
a number of contractile vacuoles appear

Correct

Wrong

Skipped
D
the contractile vacuole remains unchanged

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Solutions
the contractile vacuole disappears

Question 1/30

Vitamin D

Vitamin A

Vitamin K

Vitamin C

Question 2/30

Ethyl alcohol

Amyl alcohol

Benzyl alcohol

Methyl alcohol

Question 3/30

They both use photosynthesis to make their own food.

They both produce carbohydrates and oxygen.

They both use chemosynthesis to produce their own food.

They both produce carbon and hydrogen.

Question 4/30

suffocation

asphyxia

emphycema

eupnoea

Question 5/30

sympatric populations of species with similar ecological niches.

allopatric populations of species with similar ecological niches.

sympatric populations of a predator and its prey.

allopatric populations of the same animal species.

Question 6/30

Iris

Lens

Cornea

Retina

Question 7/30

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

Question 8/30

Surgical fusion of two adjacent vertebrae will alleviate the problem and cause no reduction in flexibility.

Intense back pain is caused when the slipped disk presses against the spinal cord nerves.

Surgical procedures can be performed to alleviate the pain of a damaged disk.

Herniated disks are most commonly found in the lumbar region of the back.

Question 9/30

fixation of heterosis in organisms

maintaining heterozygosity in population

indicating relative position of genes in chromosomes

explaining the phenomenon of coupling and repulsion

Question 10/30

Glutamic acid by valine in ??chain

Glutamic acid by valine in ??chain

Valine by glutamic acid in ??chain

Valine by glutamic acid in ??chain

Question 11/30

Starfish

Jelly fish

Silver fish

Scoliodon

Question 12/30

Insulin

Cytokinin

Ethylene

Gibberellin

Question 13/30

Depletion of earth's ozone layer

Dust clouds from valcanoes

Atomic warfare

CO2 from fossil fuels

Question 14/30

Perionyx excavatus

Eudrilus eugeniae

Eisenia fetidae

Pheretima Posthuma

Question 15/30

White blood cells

Blood platelets

Blood Plasma

Red blood cells

Question 16/30

Clonal variations

Somatic variations

Somaclonal variations

Tissue culture variations