Heredity Class 10 Science MCQ Quiz – Test Your Knowledge

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Are you preparing for your CBSE Class 10 Science exam? Boost your understanding of Heredity with this engaging MCQ quiz. This chapter covers inheritance of traits, Mendel’s laws, sex determination, and variations—key topics for board exams.

About the Quiz

Chapter Name: Heredity
Subject: Science (Biology)
Book: NCERT Class 10 Science
Question Type: Multiple Choice Questions (MCQs)
Leaderboard: Yes (Compete with Others!)

Why Take This Quiz?

✔ Helps in quick revision for board exams
✔ Covers important NCERT-based questions
✔ Leaderboard feature to track your performance

Click Below to Start the Quiz!

Chapter 8 - Heredity

1 / 15

If a round, green-seeded pea plant (RR yy) is crossed with a wrinkled, yellow-seeded pea plant, (rr YY) the seeds produced in the F1 generation are

Round and green

Round and yellow

Wrinkled and green

Wrinkled and yellow

2 / 15

In cattle, having horns is a recessive trait (h) to not having horns (H). When cattle with horns are crossed with cattle that do not have horns, the number of offspring having horns was equal to those not having horns. Which of the following is MOST LIKELY to be true?

One parent is heterozygous.

Both parents are homozygous dominant.

One parent is homozygous dominant.

Both parents are heterozygous.

3 / 15

Which of the following is heterozygous?

TTRR

ttrr

4 / 15

The height of a plant is regulated by:

Genes that regulate the proteins directly.

DNA which is directly influenced by growth hormone.

Growth hormones directly under the influence of a gene.

Growth hormones under the influence of the enzymes coded by a gene.

5 / 15

Assertion: The probability of survival of an organism produced through sexual reproduction is more than that of an organism produced through asexual mode.

Reason: Variations provide advantages to individuals for survival.

A is true but R is false.

A is false but R is true.

Both A and R are true, and R is not the correct explanation of A.

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

6 / 15

If a tall pea plant is crossed with a pure dwarf pea plant then, what percentage of F1 and F2 generation respectively will be tall?

25%, 25%

75%, 100%

50%, 50%

100%, 75%

7 / 15

9 : 3 : 3 : 1 ratio is due to _____.

Crossing over

Recessiveness

Segregation

Independent assortment

8 / 15

A zygote that has an X-chromosome inherited from the father will develop into a _____.

Girl

Either boy or girl

X-chromosome does not determine the sex of a child

Boy

9 / 15

In an asexually reproducing species if trait X exists in 5% of a population and trait Y exists in 70% of the same population, which of the two traits is likely to have arisen earlier?

Trait Y

Trait X

Insufficient information

10 / 15

Assertion (A): Height in pea plants is controlled by the efficiency of enzymes and is thus genetically controlled.

Reason (R): Cellular DNA is the information source for making proteins in the cell.

A is true but R is false

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

A is false but R is true

Both A and R are true and R is not the correct explanation of A

11 / 15

The genotype of offspring formed from Tt x tt will be

Tt and tt

Only tt

TT and tt

Only TT

12 / 15

Which of the following statements is incorrect?

For every molecule of fat there is a gene.

For the production of every enzyme there is a gene.

For every hormone there is a gene.

For every protein there is a gene.

13 / 15

A homozygous dominant guinea pig with black fur is crossed with a homozygous guinea pig with white fur. The F1 generation is crossed with itself.

What percentage of F2 generation is expected to show a white fur coat?

50 %

100 %

75 %

25 %

14 / 15

A recessive homozygote is crossed with a heterozygote of the same gene. What will be the phenotype of the F1 generation?

50 % dominant, 50 % recessive

All dominant

75 % dominant, 25 % recessive

25 % dominant, 50 % heterozygous, 25 % recessive

15 / 15

Which statement about the genotypes of organisms is correct?

Dominant alleles are only found in homozygotes

The dominant phenotype must be heterozygous

Recessive phenotypes must be homozygous

One recessive allele always causes a recessive phenotype

Your score is

The average score is 59%

Leaderboard – Top Scorers

Check out the highest scorers below!

Pos.	Name	Score	Duration	Points
1	Sohrav ali	100 %	50 seconds	15
2	Gjk	100 %	1 minutes 2 seconds	15
3	Nani	100 %	1 minutes 5 seconds	15
4	manpreet singh	100 %	1 minutes 16 seconds	15
5	Nani	100 %	1 minutes 22 seconds	15
6	Ronin Akagami	100 %	1 minutes 24 seconds	15
7	cc	100 %	3 minutes 52 seconds	15
8	ladleee	100 %	6 minutes 19 seconds	15
9	umaima	100 %	14 minutes	15
10	rumaisa	100 %	15 minutes 3 seconds	15
11	asiyaa	100 %	15 minutes 38 seconds	15
12	amshal	100 %	28 minutes 42 seconds	15
13	Sohrav Ali	93 %	47 seconds	14
14	hh	93 %	1 minutes 26 seconds	14
15	Aanya Awasthi	93 %	2 minutes 7 seconds	14
16	MSA	93 %	2 minutes 41 seconds	14
17	manjusha	93 %	2 minutes 44 seconds	14
18	anjana	93 %	4 minutes 2 seconds	14
19	a	93 %	4 minutes 53 seconds	14
20	cbse ka king	93 %	5 minutes 44 seconds	14
21	r	93 %	5 minutes 55 seconds	14
22	golibaje	93 %	6 minutes 13 seconds	14
23	Babu	93 %	6 minutes 40 seconds	14
24	b hb	93 %	16 minutes 45 seconds	14
25	GURJAR PEPSU	87 %	1 minutes 18 seconds	13
26	A	87 %	1 minutes 42 seconds	13
27	sneha	87 %	3 minutes 43 seconds	13
28	kjgfulli;	87 %	4 minutes 19 seconds	13
29	ahhhhhhhhhhhhhhhhhh	87 %	4 minutes 26 seconds	13
30	aaaaaaaaaaaaaaaaahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh	87 %	4 minutes 58 seconds	13
31	sadhna	87 %	5 minutes	13
32	Swara	87 %	5 minutes 13 seconds	13
33	An	87 %	7 minutes 25 seconds	13
34	Saim	87 %	8 minutes 40 seconds	13
35	n	87 %	11 minutes 18 seconds	13
36	Titli	87 %	11 minutes 52 seconds	13
37	Rijjakjot	87 %	12 minutes 17 seconds	13
38	cc	87 %	17 minutes 35 seconds	13
39	manpreet	87 %	29 minutes 12 seconds	13
40	kihiboto	80 %	1 minutes 25 seconds	12
41	754	80 %	1 minutes 27 seconds	12
42	B..	80 %	1 minutes 29 seconds	12
43	ilyfuy	80 %	3 minutes 50 seconds	12
44	Sukriti Mohan	80 %	6 minutes 14 seconds	12
45	shinchan	80 %	7 minutes 32 seconds	12
46	M	80 %	8 minutes 4 seconds	12
47	hhh	80 %	10 minutes 18 seconds	12
48	Shristi	80 %	11 minutes 57 seconds	12
49	Babu	80 %	13 minutes 12 seconds	12
50	An	80 %	14 minutes 46 seconds	12
51	Anjana	80 %	14 minutes 59 seconds	12
52	Tanu	80 %	15 minutes 5 seconds	12
53	hikuto hotirungawomi	73 %	1 minutes 2 seconds	11
54	eeeeeeee	73 %	1 minutes 15 seconds	11
55	Naman Tyagi	73 %	3 minutes 50 seconds	11
56	arjun desai	73 %	4 minutes	11
57	KK	73 %	6 minutes 25 seconds	11
58	leo	73 %	6 minutes 30 seconds	11
59	manjusha kochare	73 %	8 minutes 14 seconds	11
60	mayank	73 %	9 minutes 10 seconds	11
61	Ak	73 %	9 minutes 51 seconds	11
62	Anand	73 %	11 minutes 41 seconds	11
63	sakina	73 %	14 minutes 51 seconds	11
64	md khateeb alam	73 %	17 minutes 46 seconds	11
65	kjsc	73 %	18 minutes	11
66	anvita	73 %	31 minutes 3 seconds	11
67	JIN	73 %	36 minutes 14 seconds	11
68	Riya	67 %	1 minutes 21 seconds	10
69	pepsu Gujjar	67 %	1 minutes 24 seconds	10
70	manpreet	67 %	1 minutes 45 seconds	10
71	anamta	67 %	1 minutes 57 seconds	10
72	Dyfydu	67 %	1 minutes 58 seconds	10
73	Param	67 %	3 minutes 57 seconds	10
74	Mansi	67 %	5 minutes 54 seconds	10
75	Ronin Akagami	67 %	6 minutes 6 seconds	10
76	Yash Kushwaha	67 %	6 minutes 25 seconds	10
77	sun	67 %	6 minutes 28 seconds	10
78	maokidbfhiubirbd fdbvkjebqr	67 %	10 minutes 42 seconds	10
79	S	67 %	11 minutes 20 seconds	10
80	MISHTHI	67 %	24 minutes 32 seconds	10
81	Heer	60 %	41 seconds	9
82	Dher	60 %	49 seconds	9
83	A	60 %	2 minutes 57 seconds	9
84	manpreet singh	60 %	3 minutes 4 seconds	9
85	vedanshi	60 %	3 minutes 57 seconds	9
86	H	60 %	4 minutes 17 seconds	9
87	MSA	60 %	5 minutes 14 seconds	9
88	457	60 %	5 minutes 45 seconds	9
89	Aanya Awasthi	60 %	6 minutes 34 seconds	9
90	sneha	60 %	7 minutes 17 seconds	9
91	pawan	60 %	7 minutes 37 seconds	9
92	abcdef	60 %	8 minutes 31 seconds	9
93	xyz	60 %	8 minutes 33 seconds	9
94	sm	60 %	8 minutes 47 seconds	9
95	pawan	60 %	9 minutes 33 seconds	9
96	Prince	60 %	11 minutes 24 seconds	9
97	Radha	60 %	15 minutes 15 seconds	9
98	Amar	60 %	16 minutes 26 seconds	9
99	Anant	60 %	23 minutes 37 seconds	9
100	manpreet singh randhawa	60 %	52 minutes 15 seconds	9
101	bbnhn	53 %	1 minutes 49 seconds	8
102	te6	53 %	3 minutes 6 seconds	8
103	esakki prema	53 %	6 minutes 2 seconds	8
104	abz	53 %	8 minutes 56 seconds	8
105	manjusha kochare	53 %	11 minutes 28 seconds	8
106	Sjhd	47 %	55 seconds	7
107	otobihik imowa	47 %	1 minutes 8 seconds	7
108	Jj	47 %	2 minutes 28 seconds	7
109	I67	47 %	3 minutes 39 seconds	7
110	sasfwa	47 %	3 minutes 52 seconds	7
111	Nile	47 %	4 minutes 4 seconds	7
112	Sohrav ali	47 %	4 minutes 52 seconds	7
113	Aayush	47 %	7 minutes 2 seconds	7
114	x	47 %	7 minutes 53 seconds	7
115	MSA	47 %	8 minutes 22 seconds	7
116	T	47 %	9 minutes 47 seconds	7
117	anamta	47 %	11 minutes 39 seconds	7
118	B..	47 %	12 minutes 25 seconds	7
119	Bio	47 %	13 minutes 24 seconds	7
120	daksh nagpAL	47 %	21 minutes 23 seconds	7
121	HHUHHHHHHHHHHH	40 %	1 minutes 15 seconds	6
122	hi how are you	40 %	1 minutes 48 seconds	6
123	Harsh	40 %	1 minutes 57 seconds	6
124	Sohrav Ali	40 %	2 minutes 37 seconds	6
125	Sana	40 %	2 minutes 50 seconds	6
126	Nik	40 %	3 minutes 37 seconds	6
127	shaireen	40 %	4 minutes 43 seconds	6
128	Riya	40 %	5 minutes 10 seconds	6
129	Ganesh prajapati	40 %	6 minutes 13 seconds	6
130	M	40 %	7 minutes 27 seconds	6
131	B	40 %	9 minutes 26 seconds	6
132	y	40 %	20570 days 9 hours 58 minutes 40 seconds	6
133	Dheer	33 %	40 seconds	5
134	Krisha	33 %	1 minutes 20 seconds	5
135	Rk	33 %	2 minutes 15 seconds	5
136	Rohit	33 %	4 minutes 10 seconds	5
137	Rupam	33 %	4 minutes 30 seconds	5
138	Nani	33 %	4 minutes 34 seconds	5
139	Mithu. Kumari	33 %	5 minutes 18 seconds	5
140	puneet superstar	33 %	5 minutes 30 seconds	5
141	manpreet	33 %	6 minutes 29 seconds	5
142	Akriti	33 %	12 minutes 31 seconds	5
143	Abhishek Kumar	33 %	13 minutes 20 seconds	5
144	vine	33 %	17 minutes	5
145	adarsh	33 %	19 minutes 35 seconds	5
146	achal	33 %	25 minutes 59 seconds	5
147	Hhjj	27 %	2 minutes 11 seconds	4
148	Dhgd	27 %	2 minutes 13 seconds	4
149	Food	27 %	3 minutes 14 seconds	4
150	kashish devshree	27 %	4 minutes 7 seconds	4
151	Mk	27 %	7 minutes 53 seconds	4
152	Riza	27 %	8 minutes 16 seconds	4
153	Aditi	27 %	8 minutes 20 seconds	4
154	Radhika	27 %	22 minutes 17 seconds	4
155	inzamam	20 %	1 minutes 2 seconds	3
156	khushi	20 %	1 minutes 19 seconds	3
157	H	20 %	1 minutes 21 seconds	3
158	manjusha kochare	20 %	1 minutes 39 seconds	3
159	gujjax pepsu bhai	20 %	1 minutes 43 seconds	3
160	prajal	20 %	2 minutes 3 seconds	3
161	Ruhi	20 %	3 minutes 40 seconds	3
162	रोशन	20 %	4 minutes 15 seconds	3
163	chythra	20 %	8 minutes 26 seconds	3
164	A	20 %	9 minutes 19 seconds	3
165	R	20 %	11 minutes 32 seconds	3
166	Lucky	13 %	43 seconds	2
167	V	13 %	1 minutes 9 seconds	2
168	@$$$$	13 %	3 minutes 10 seconds	2
169	afzal ansari	13 %	5 minutes 30 seconds	2
170	kihiboto	13 %	5 minutes 36 seconds	2
171	7t	13 %	5 minutes 59 seconds	2
172	Mahmood	13 %	17 minutes 13 seconds	2
173	j	7 %	3 minutes 15 seconds	1
174	njk	0 %	35 seconds	0

Key Topics Covered in the Quiz

✔ Mendel’s Laws of Inheritance
✔ Monohybrid and Dihybrid Cross
✔ Dominant and Recessive Traits
✔ Sex Determination in Humans
✔ Genotypic and Phenotypic Ratios
✔ Variation and Evolution

More Class 10 Science MCQ Quizzes

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Also See: CBSE Class 10 Second Board Exam 2026: Who is Eligible? (Official Rules)

About the Quiz

Why Take This Quiz?

Leaderboard – Top Scorers

Key Topics Covered in the Quiz

More Class 10 Science MCQ Quizzes

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