Biology Test 21

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Biology Test 21

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Question 1/30
1 / -0

Directions For Questions

Tolerance

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Everytime, when the dosage of a drug has to be increased to achieve the same ‘kick’ that initially occurred in response to a smaller dose, this condition is known as _______.

Correct

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Skipped
A
Withdrawal symptoms

Correct

Wrong

Skipped
B
Rebound effect

Correct

Wrong

Skipped
C
Tolerance

Correct

Wrong

Skipped
D
Addiction

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Solutions
Tolerance
Question 2/30
1 / -0

Directions For Questions

melanocytes

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Pigmentation of skin is due to ?

Correct

Wrong

Skipped
A
lymphocytes

Correct

Wrong

Skipped
B
monocytes

Correct

Wrong

Skipped
C
leucocytes

Correct

Wrong

Skipped
D
melanocytes

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Solutions
melanocytes
Question 3/30
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Directions For Questions

Cellulose

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Cotton fibres are made of?

Correct

Wrong

Skipped
A
Fats

Correct

Wrong

Skipped
B
Proteins

Correct

Wrong

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C
Lipids

Correct

Wrong

Skipped
D
Cellulose

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Solutions
Cellulose
Question 4/30
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Directions For Questions

meristems low on the plant

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Which of the following adaptations allows a plant to tolertate grazing by herbivores ?

Correct

Wrong

Skipped
A
thick waxy cuticles on leaves

Correct

Wrong

Skipped
B
leaves reduced to spine

Correct

Wrong

Skipped
C
meristems low on the plant

Correct

Wrong

Skipped
D
stems with thorns

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Solutions
meristems low on the plant
Question 5/30
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Directions For Questions

All A, B and C

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The chromosomes are composed of?

Correct

Wrong

Skipped
A
DNA

Correct

Wrong

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B
Histone proteins

Correct

Wrong

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C
RNA

Correct

Wrong

Skipped
D
All A, B and C

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Solutions
All A, B and C
Question 6/30
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Directions For Questions

Kesari Dal

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Lathyrism is caused by excessive consumption of

Correct

Wrong

Skipped
A
Kesari Dal

Correct

Wrong

Skipped
B
Mustard oil

Correct

Wrong

Skipped
C
Polished rice

Correct

Wrong

Skipped
D
Mushrooms

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Solutions
Kesari Dal
Question 7/30
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Directions For Questions

By tracheal system

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How do most insects respire ?

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A
Through skin

Correct

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B
Through gills

Correct

Wrong

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C
By lungs

Correct

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Skipped
D
By tracheal system

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Solutions
By tracheal system
Question 8/30
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Directions For Questions

GH

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Name the hormone that has no role in menstruation?

Correct

Wrong

Skipped
A
LH

Correct

Wrong

Skipped
B
FSH

Correct

Wrong

Skipped
C
GH

Correct

Wrong

Skipped
D
TSH

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Solutions
GH
Question 9/30
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Directions For Questions

Ecological niche.

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A species of fish is found to require a certain temperature, a particular oxygen content of the water, a particular depth, and a rocky substrate on the bottom. These requirements are part of its?

Correct

Wrong

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A
Ecological niche.

Correct

Wrong

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B
pPrime habitat.

Correct

Wrong

Skipped
C
Resource partition.

Correct

Wrong

Skipped
D
Home base.

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Solutions
Ecological niche.
Question 10/30
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Directions For Questions

Tortoise

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Carapace is present on the dorsal surface of:

Correct

Wrong

Skipped
A
Elephant

Correct

Wrong

Skipped
B
Tortoise

Correct

Wrong

Skipped
C
Python

Correct

Wrong

Skipped
D
Alligator

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Solutions
Tortoise
Question 11/30
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Directions For Questions

Olericulture

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The study related to the plants being used as vegetable is called ..

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Wrong

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A
Flori-culture

Correct

Wrong

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B
Pomology

Correct

Wrong

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C
Horticulture

Correct

Wrong

Skipped
D
Olericulture

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Solutions
Olericulture
Question 12/30
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Directions For Questions

H2A, H2B, H3 and H4

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Nucleosome core is made of

Correct

Wrong

Skipped
A
H1,H2A, H2B and H3

Correct

Wrong

Skipped
B
H2A, H2B, H3 and H4

Correct

Wrong

Skipped
C
H1,H2A, H2B, H3 and H4

Correct

Wrong

Skipped
D
H1, H2A, H2B, H4

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Solutions
H2A, H2B, H3 and H4
Question 13/30
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Directions For Questions

bacteria.

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Nitrogen fixation is carried out primarily by..

Correct

Wrong

Skipped
A
humans.

Correct

Wrong

Skipped
B
plants.

Correct

Wrong

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C
bacteria.

Correct

Wrong

Skipped
D
consumers.

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Solutions
bacteria.
Question 14/30
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Directions For Questions

Tissue culture technique

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A large number of identical plants can be obtained in a short span of time through -

Correct

Wrong

Skipped
A
Tissue culture technique

Correct

Wrong

Skipped
B
hydroponics method

Correct

Wrong

Skipped
C
Stem cuttings

Correct

Wrong

Skipped
D
Large number of seeds of a single plant

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Solutions
Tissue culture technique
Question 15/30
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Directions For Questions

1, 3, 4 only

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Which of the following diseases are transmitted from one person to another? 1. Aids 2. Cirrhosis 3. Hepatitis 4. Syphilis Select the correct answer using the code given below:

Correct

Wrong

Skipped
A
1, 3, 4 only

Correct

Wrong

Skipped
B
1, 2, 3 and 4

Correct

Wrong

Skipped
C
1 and 2 only

Correct

Wrong

Skipped
D
2, 3 and 4 only

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Solutions
1, 3, 4 only
Question 16/30
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Directions For Questions

genus

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The oldest level of taxonomic classification is

Correct

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Skipped
A
class

Correct

Wrong

Skipped
B
family

Correct

Wrong

Skipped
C
genus

Correct

Wrong

Skipped
D
phylum

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Solutions
genus
Question 17/30
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Directions For Questions

Organic farming

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Which one of the following agricultural practices is eco-friendly ?

Correct

Wrong

Skipped
A
Organic farming

Correct

Wrong

Skipped
B
Shifting cultivation

Correct

Wrong

Skipped
C
Cultivation of high yielding varieties

Correct

Wrong

Skipped
D
Growing plants in glass -houses

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Solutions
Organic farming
Question 18/30
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Directions For Questions

bipolar neuron

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Rods and cones of eyes are modified?

Correct

Wrong

Skipped
A
polar neuron

Correct

Wrong

Skipped
B
bipolar neuron

Correct

Wrong

Skipped
C
by multipolar neuron

Correct

Wrong

Skipped
D
None of these

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Solutions
bipolar neuron
Question 19/30
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Directions For Questions

transport amino acids for protein synthesis

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The function of tRNA in cell metabolism is to ____ ?

Correct

Wrong

Skipped
A
carry codons to the ribosomes

Correct

Wrong

Skipped
B
transport amino acids for protein synthesis

Correct

Wrong

Skipped
C
transcribe the DNA codes

Correct

Wrong

Skipped
D
synthesise anticodons

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Solutions
transport amino acids for protein synthesis
Question 20/30
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Directions For Questions

1 and 2 only

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1. It is possible to know the pedigree of livestock. 2. It is possible to understand the causes of all human diseases. 3. It is possible to develop disease resistant animal breeds. Which of the statements given above is/are correct ?

Correct

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A
1 and 2 only

Correct

Wrong

Skipped
B
2 only

Correct

Wrong

Skipped
C
1 and 3 only

Correct

Wrong

Skipped
D
1,2 and 3

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Solutions
1 and 2 only
Question 21/30
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Directions For Questions

a unit of heredity

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A gene is_______.

Correct

Wrong

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A
a type of body cell

Correct

Wrong

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B
a kind of vitamin

Correct

Wrong

Skipped
C
a sleep-inducing drug

Correct

Wrong

Skipped
D
a unit of heredity

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Solutions
a unit of heredity
Question 22/30
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Directions For Questions

Enol pyruvilshikimate 3-phosphate synthase

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\'Roundup Ready\' -the first crop engineered for glyphosphate resistance contains modified genes for the enzyme______.

Correct

Wrong

Skipped
A
Enol pyruvic 3-phosphate transferase

Correct

Wrong

Skipped
B
Enol pyruvilshikimate 3-phosphate synthase

Correct

Wrong

Skipped
C
phospho enol pyruvate

Correct

Wrong

Skipped
D
phospho enol transferase

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Solutions
Enol pyruvilshikimate 3-phosphate synthase
Question 23/30
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Directions For Questions

EEG

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Electric potential of the brain is recorded by

Correct

Wrong

Skipped
A
ECG

Correct

Wrong

Skipped
B
EEG

Correct

Wrong

Skipped
C
CT Scan

Correct

Wrong

Skipped
D
Sphygmomanometer

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Solutions
EEG
Question 24/30
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Directions For Questions

A and D

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What is/are true about heart wood? A. It does not help in water conduction. B. It is also called alburnum. C. It is dark in colour but very soft. D. It has tracheary elements which are filled with tannin, resin, etc.

Correct

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Skipped
A
A and D

Correct

Wrong

Skipped
B
B and D

Correct

Wrong

Skipped
C
A, B and C

Correct

Wrong

Skipped
D
B. C and D

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Solutions
A and D
Question 25/30
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Directions For Questions

Methane

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Marsh gas is...?

Correct

Wrong

Skipped
A
Methane

Correct

Wrong

Skipped
B
Ethane

Correct

Wrong

Skipped
C
Hydrogen

Correct

Wrong

Skipped
D
Nitrogen

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Solutions
Methane
Question 26/30
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Directions For Questions

Honey bee

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Male is haploid in?

Correct

Wrong

Skipped
A
Lizard

Correct

Wrong

Skipped
B
Cockroach

Correct

Wrong

Skipped
C
Honey bee

Correct

Wrong

Skipped
D
Bats

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Solutions
Honey bee
Question 27/30
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Directions For Questions

Shoot apex culture

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In crop improvement programmes, virus-free clones can be obtained through

Correct

Wrong

Skipped
A
Hybridization

Correct

Wrong

Skipped
B
Embryo culture

Correct

Wrong

Skipped
C
Shoot apex culture

Correct

Wrong

Skipped
D
Grafting

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Solutions
Shoot apex culture
Question 28/30
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Directions For Questions

Fallopian tube

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In human beings, normally in which one of the following parts,does the sperm fertilize the ovum ?

Correct

Wrong

Skipped
A
Cervix

Correct

Wrong

Skipped
B
Fallopian tube

Correct

Wrong

Skipped
C
Lower part of uterus

Correct

Wrong

Skipped
D
Upper part of uterus

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Solutions
Fallopian tube
Question 29/30
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Directions For Questions

AB

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A person having which of the following blood can receive blood of any group ?

Correct

Wrong

Skipped
A
O

Correct

Wrong

Skipped
B
AB

Correct

Wrong

Skipped
C
A

Correct

Wrong

Skipped
D
B

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Solutions
AB
Question 30/30
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Directions For Questions

birds from reptiles

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The fossil of Archaeopteryx represents the evidence of origin of-

Correct

Wrong

Skipped
A
mammals from reptiles

Correct

Wrong

Skipped
B
birds from reptiles

Correct

Wrong

Skipped
C
reptiles from amphibians

Correct

Wrong

Skipped
D
mammals from birds

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Solutions
birds from reptiles

Question 1/30

Withdrawal symptoms

Rebound effect

Tolerance

Addiction

Question 2/30

lymphocytes

monocytes

leucocytes

melanocytes

Question 3/30

Fats

Proteins

Lipids

Cellulose

Question 4/30

thick waxy cuticles on leaves

leaves reduced to spine

meristems low on the plant

stems with thorns

Question 5/30

DNA

Histone proteins

RNA

All A, B and C

Question 6/30

Kesari Dal

Mustard oil

Polished rice

Mushrooms

Question 7/30

Through skin

Through gills

By lungs

By tracheal system

Question 8/30

LH

FSH

GH

TSH

Question 9/30

Ecological niche.

pPrime habitat.

Resource partition.

Home base.

Question 10/30

Elephant

Tortoise

Python

Alligator

Question 11/30

Flori-culture

Pomology

Horticulture

Olericulture

Question 12/30

H1,H2A, H2B and H3

H2A, H2B, H3 and H4

H1,H2A, H2B, H3 and H4

H1, H2A, H2B, H4

Question 13/30

humans.

plants.

bacteria.

consumers.

Question 14/30

Tissue culture technique

hydroponics method

Stem cuttings

Large number of seeds of a single plant

Question 15/30

1, 3, 4 only

1, 2, 3 and 4

1 and 2 only

2, 3 and 4 only

Question 16/30

class

family

genus

phylum