Biology 10 Chapter 15 Challenge MCQs Test

In Biology 10 Chapter 15 Challenge MCQs Test, there are 75 MCQs. This test contains all the Chapter 15 MCQs of practice tests. So just do the practice of all the 5 MCQs Tests then come to do this test. All these MCQ tests are for Federal Board students.

Biology 10 Chapter 15 Challenge MCQs Test

Challenge MCQs Test

173

---

Class 10 Biology
Chapter 15
Full Chapter Challenge Test

1 / 75

It is a condition in which normal body pigments are absent;

Albinism

Sickle cell anaemia

Diabetes

Colour blindness

2 / 75

In artificial selection, bred plants are known as:

Breeds

Varieties

Cultivars and varieties

Cultivars

3 / 75

Example of discontinuous variation is;

None of these

Height in Man

Blood group

Intelligence

4 / 75

How many types of differences shown by individuals of same species?

6

4

1

2

5 / 75

Dominant alleles are represented by _________ letter and recessive alleles by ____________ letters.

Capital, lowercase

Lower case, lowercase

Lowercase, capital

Capital, capital

6 / 75

Mendel used __________ pea plants in his experiments

2800

28000

280000

2800000

7 / 75

In which part of cell, transcription takes place?

Cytoplasm

Nucleus

Ribosomes

Golgi Appartus

8 / 75

Pink Flowered Four O Clock plant is an example of;

None of these

Incomplete dominance

Co-dominance

Complete dominance

9 / 75

Specific sequence of DNA nucleotides is copied In the form of mRNA In a process:

Replication

Translation

Inheritance

Transcription

10 / 75

Among following which Is an example of co-dominance?

Blood group A

Blood group B

Blood group AB

Blood group O

11 / 75

mRNA is synthesized by:

RNA Ligase

RNA Polymerase

DNA Polymerase

Ribosomes

12 / 75

Outside backbone of double helix is made up of:

None of these

Phosphate

Sugar

Sugar-phosphate

13 / 75

Which component of cell Is Involved In translation?

Mitochondria

Golgi apparatus

Ribosome

Nucleus

14 / 75

In which type of variation, the phenotypes show a complete range of measurements from one extreme to the other Is;

Both a and b

None of these

Continuous

Discontinuous

15 / 75

All living things had been created in their current form only a few thousand years ago. This Idea Is known as;

Evolution

Theory of special creation

Variations

None of these

16 / 75

Genes contain Instructions for the synthesis of;

Vitamins

Fats

Carbohydrates

Proteins

17 / 75

How many hydrogen bonds are formed between cytosine and guanine?

2

4

1

3

18 / 75

Charles Darwin published a book "On the Origin of Species by means of Natural selection" In;

1859

1858

1870

1869

19 / 75

How many genetically different kinds of gametes an individual with genotype AAbb can produce?

8

4

2

1

20 / 75

It is a situation where in heterozygous genotypes, both the alleles express as a blend and neither allele Is dominant over the other;

None of these

Complete dominance

Incomplete dominance

Co-dominance

21 / 75

What condenses Into a chromosome?

Nucleoplasm

Nucleolus

Cytoplasm

Chromatin material

22 / 75

Each trait studied in Pea plant had ___________ distinct form.

1

2

4

6

23 / 75

What make the backbone of DNA molecule?

Deoxyribose

Nitrogenous bases

Phosphate

Phosphate + Deoxyribose

24 / 75

In 1953,_______ proposed the structure of DNA.

Both a and b

James Watson

Francis Crick

None of these

25 / 75

Which of the following genes will be termed as Homozygous Recessive,

RrYy

rryy

RrYY

RRYY

26 / 75

What will be the colour of flowers produced as a result of cross between red and white flowered 4'O Clock plants?

Purple

Pink

Red

White

27 / 75

In the cross-pollination between a true-breeding yellow pod plant and a true-breeding green pod plant, where green pod colour is dominant, the resulting offsprings (F1 generation) will be:

1/4 green, 3/4 yellow

All green

All yellow

1/4 yellow, 3/4 green

28 / 75

How many pairs of homologous chromosomes are there in human body cell?

46

23

22

40

29 / 75

DNA wraps around histone protein and forms rounded structures called as;

Ribosomes

Lysosomes

Nucleosomes

mRNA

30 / 75

Which variations show distinct phenotypes and phenotypes of such variations cannot be measured?

Both a and b

Continuous variations

Discontinuous variations

None of these

31 / 75

Cytocine always pairs with;

Adenine

Thymine

Guanine

Uracil

32 / 75

Who developed fundamental Principles of genetics?

Gregor Mendel

Charles Darwin

Lamark

Charles Lyll

33 / 75

Transmisslon of characteristics front parents to offsprings is called as;

Mutation

Replication

Co-dominance

Inheritance

34 / 75

The Specific combinations of germs in an individual is known as;

Genotype

Karyotype

Phenocopy

Phenotype

35 / 75

Chromosomes carry units of Inheritance called as;

None of these

genes

DNA

Chromatin

36 / 75

Specific proteins have specific number and sequence of;

Allele

Enzymes

Amino Acids

Loci

37 / 75

Chromatin is made up of:

DNA

None of these

DNA+Protein

Proteins

38 / 75

Which of the following statements regarding genes is FALSE?

A gene contains information for the production of a protein

Each cell contains a single copy of every gene

Genes are located on chromosomes

Genes consist of a long sequence of DNA

39 / 75

Adenine always pairs with;

Thymine

Guanine

Uracil

Cytosine

40 / 75

Which is favourable variation in moths after industrial revolution?

Medium colour

Light colour

None of these

Dark colour

41 / 75

The first filial generation Is denoted by

P2

F2

P1

F1

42 / 75

Inside of double helix consists of:

Sugar

Phosphate

Sugar-phosphate

Nitrogenous bases

43 / 75

The alternate forms of a gene are called as;

None of these

Genotype

Alleles

Genome

44 / 75

Feet size in Man Is an example of:

Heredity variations

Continuous variations

Gene flow

Discontinuous variations

45 / 75

It is situation where two different alleles of a gene pair express themselves completely, instead of showing a dominant- recessive relationship is called;

Complete dominance

None of these

Incomplete dominance

Co-dominance

46 / 75

Who proposed the mechanism of organic evolution In 1838?

Lamark

Charles Lyll

Charles Darwin

Gregor Mendel

47 / 75

Sequence of amino acids in a protein Is controlled by sequence of __________ In DNA.

Genes

Nucleotides

alleles

Loci

48 / 75

How many hydrogen bonds are formed between adenine and thymine?

3

2

1

4

49 / 75

An organism's expressed physical trait, such as seed colour or pod shape, is called its:

Karyotype

Phenotype

Genotype

Physical type

50 / 75

Which is favourable variation in moths before Industrial revolution?

Light colour

Medium colour

None of these

Dark colour

51 / 75

A purple-flowered pea plant has the genotype PP. Which of the following statements about this plant is FALSE?

When bred to a white-flowered plant, all offspring will be purple flowered

All the gametes produced will have the same flower colour allele

It has a homozygous dominant genotype

Its phenotype will be white flowers

52 / 75

A DNA molecule consists of ______ polynucleotide strands.

3

2

5

4

53 / 75

What Is the Diploid (2n) number of humans?

26

16

23

46

54 / 75

Mendel's primary contribution to our understanding of inheritance was;

The idea that genes are found on chromosomes

Explanation of the patterns of inheritance

Determining that informations contained in DNA are for protein synthesis

The discovery of alleles

55 / 75

It is change in characteristics of a population or species of organisms over the course of generations;

Transcription

Evolution

Replication

Translation

56 / 75

A dominant allele only suppresses the expression of recessive allele it does not affect its:

Nature

Working

Length

Position

57 / 75

The position of gene on chromosome is known as;

Genome

Allele

Genotype

Locus

58 / 75

The possible number of chromosomal combinations are:

70 millions

70 trillion

70 billion

80 trillion

59 / 75

__________________ gave the first hint at evolution?

C.de Buffon

Lamarck

Charles Darwin

R. C. Punnett

60 / 75

Expression of genotype in the form of trait is:

Complete dominance

Phenotype

Genome

Incomplete dominance

61 / 75

In ________ James Watson and Francis Crick proposed the structure of DNA.

1955

1957

1951

1953

62 / 75

Charles Darwin proposed that organisms produce many more offspring than can possible survive on the limited amount of resources available to them. According to Darwin, the offspring that are most likely to survive are those that;

Are best adapted to the environment

Have no natural predators

Are born first and grow fastest

Are largest and most aggressive

63 / 75

In which part of cell, transcription takes place?

Ribosome

Cytoplasm

Golgi Apparatus

Nucleus

64 / 75

Variations selected for their transmission to next generation are;

Continuous

Discontinuous

Favourable

None of these

65 / 75

Among following, which is the genotype of blood group O?

[katex]{ I }^{ B }i[/katex]

ii

[katex]{ I }^{ A }i[/katex]

[katex]{ I }^{ A }{ I }^{ B }[/katex]

66 / 75

Intentional breeding between individuals for certain traits, or combination of traits is called as:

Variations

Artificial selection

Natural selection

Evolution

67 / 75

Copies of chromatids of chromosomes are made through the process called;

Inheritance

Translation

Transcription

Replication

68 / 75

Pisum sativum is scientific name of;

Mustard plant

Onion

Frog

Pea plant

69 / 75

It is the process by which the better genetic variations become more common In successive generations of population;

Variation

Selective breeding

Natural selection

Artificial selection

70 / 75

An organism has two different alleles for a single trait. Its genotype Is said to be;

Hemizygous

Homologous

Homozygous

Heterozygous

71 / 75

Among following, which Is the source of variations?

Mutation

Crossing over

Gene flow

All of these

72 / 75

True breeding means:

None

Homozygous

Hetrozygous

Both homozygous and hetrozygous

73 / 75

Physical appearance or colour of an organism is called:

Phenotype

Genotype

Physical power

Karyotype

74 / 75

Branch of biology that deals with the study of inheritance Is called as;

Histology

Genetics

Natural selection

Artificial selection

75 / 75

Ribosome reads the sequence of mRNA nucleotides and joins specific amino acids to form proteins. This step is known as;

Translation

Combination

Replication

Transcription

Your score is

0%

Restart quiz

Please rate this quiz and give your feedback.

Send feedback

By Wordpress Quiz plugin

You can attempt more Biology MCQs Tests at our Class 10 Biology MCQs Test Page.