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

Which of the following is heterozygous?

TTRR

ttrr

2 / 15

Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce F1 progeny that have round, yellow (RrYy) seeds. When F1 plants are selfed, the F2 progeny will have a new combination of characters. Choose the new combination from the following.

Round, yellow

Round, green

Wrinkled, yellow

Wrinkled, green

I and IV

I and III

I and II

II and III

3 / 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

Wrinkled and yellow

Round and green

Round and yellow

Wrinkled and green

4 / 15

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

All dominant

75 % dominant, 25 % recessive

25 % dominant, 50 % heterozygous, 25 % recessive

50 % dominant, 50 % recessive

5 / 15

The genotype of offspring formed from Tt x tt will be

Only tt

Tt and tt

Only TT

TT and tt

6 / 15

Which of the following statements is incorrect?

For every protein there is a gene.

For every molecule of fat there is a gene.

For every hormone there is a gene.

For the production of every enzyme there is a gene.

7 / 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?

25 %

50 %

100 %

75 %

8 / 15

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

Segregation

Recessiveness

Crossing over

Independent assortment

9 / 15

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

Girl

Either boy or girl

Boy

X-chromosome does not determine the sex of a child

10 / 15

Assertion (A): Offsprings produced by sexual reproduction show variation.

Reason (R): Each offspring produced by sexual reproduction inherits all the genes from each parent.

A is false but R is true

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

A is true but R is false

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

11 / 15

The height of a plant is regulated by:

DNA which is directly influenced by growth hormone.

Growth hormones directly under the influence of a gene.

Genes that regulate the proteins directly.

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

12 / 15

Which statement about the genotypes of organisms is correct?

The dominant phenotype must be heterozygous

One recessive allele always causes a recessive phenotype

Recessive phenotypes must be homozygous

Dominant alleles are only found in homozygotes

13 / 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?

100%, 75%

50%, 50%

25%, 25%

75%, 100%

14 / 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

Insufficient information

Trait X

15 / 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.

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.

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	main kyun bataun	100 %	59 seconds	15
3	Gjk	100 %	1 minutes 2 seconds	15
4	Nani	100 %	1 minutes 5 seconds	15
5	manpreet singh	100 %	1 minutes 16 seconds	15
6	Nani	100 %	1 minutes 22 seconds	15
7	Ronin Akagami	100 %	1 minutes 24 seconds	15
8	cc	100 %	3 minutes 52 seconds	15
9	ladleee	100 %	6 minutes 19 seconds	15
10	umaima	100 %	14 minutes	15
11	rumaisa	100 %	15 minutes 3 seconds	15
12	asiyaa	100 %	15 minutes 38 seconds	15
13	amshal	100 %	28 minutes 42 seconds	15
14	Sohrav Ali	93 %	47 seconds	14
15	Ayushman	93 %	1 minutes 7 seconds	14
16	Gunu	93 %	1 minutes 10 seconds	14
17	hh	93 %	1 minutes 26 seconds	14
18	Aanya Awasthi	93 %	2 minutes 7 seconds	14
19	MSA	93 %	2 minutes 41 seconds	14
20	manjusha	93 %	2 minutes 44 seconds	14
21	anjana	93 %	4 minutes 2 seconds	14
22	a	93 %	4 minutes 53 seconds	14
23	cbse ka king	93 %	5 minutes 44 seconds	14
24	r	93 %	5 minutes 55 seconds	14
25	golibaje	93 %	6 minutes 13 seconds	14
26	Babu	93 %	6 minutes 40 seconds	14
27	b hb	93 %	16 minutes 45 seconds	14
28	GURJAR PEPSU	87 %	1 minutes 18 seconds	13
29	A	87 %	1 minutes 42 seconds	13
30	sneha	87 %	3 minutes 43 seconds	13
31	kjgfulli;	87 %	4 minutes 19 seconds	13
32	ahhhhhhhhhhhhhhhhhh	87 %	4 minutes 26 seconds	13
33	aaaaaaaaaaaaaaaaahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh	87 %	4 minutes 58 seconds	13
34	sadhna	87 %	5 minutes	13
35	Swara	87 %	5 minutes 13 seconds	13
36	An	87 %	7 minutes 25 seconds	13
37	RAJEE	87 %	7 minutes 46 seconds	13
38	Saim	87 %	8 minutes 40 seconds	13
39	n	87 %	11 minutes 18 seconds	13
40	Titli	87 %	11 minutes 52 seconds	13
41	Rijjakjot	87 %	12 minutes 17 seconds	13
42	cc	87 %	17 minutes 35 seconds	13
43	manpreet	87 %	29 minutes 12 seconds	13
44	kihiboto	80 %	1 minutes 25 seconds	12
45	754	80 %	1 minutes 27 seconds	12
46	B..	80 %	1 minutes 29 seconds	12
47	Gunaa	80 %	1 minutes 30 seconds	12
48	mamama	80 %	3 minutes 2 seconds	12
49	ilyfuy	80 %	3 minutes 50 seconds	12
50	dddd	80 %	4 minutes 49 seconds	12
51	Garima Thakur	80 %	5 minutes 6 seconds	12
52	Sukriti Mohan	80 %	6 minutes 14 seconds	12
53	shinchan	80 %	7 minutes 32 seconds	12
54	M	80 %	8 minutes 4 seconds	12
55	hhh	80 %	10 minutes 18 seconds	12
56	Shristi	80 %	11 minutes 57 seconds	12
57	Babu	80 %	13 minutes 12 seconds	12
58	An	80 %	14 minutes 46 seconds	12
59	Anjana	80 %	14 minutes 59 seconds	12
60	Tanu	80 %	15 minutes 5 seconds	12
61	hikuto hotirungawomi	73 %	1 minutes 2 seconds	11
62	eeeeeeee	73 %	1 minutes 15 seconds	11
63	Naman Tyagi	73 %	3 minutes 50 seconds	11
64	arjun desai	73 %	4 minutes	11
65	KK	73 %	6 minutes 25 seconds	11
66	leo	73 %	6 minutes 30 seconds	11
67	manjusha kochare	73 %	8 minutes 14 seconds	11
68	mayank	73 %	9 minutes 10 seconds	11
69	Ak	73 %	9 minutes 51 seconds	11
70	Anand	73 %	11 minutes 41 seconds	11
71	sakina	73 %	14 minutes 51 seconds	11
72	md khateeb alam	73 %	17 minutes 46 seconds	11
73	kjsc	73 %	18 minutes	11
74	anvita	73 %	31 minutes 3 seconds	11
75	JIN	73 %	36 minutes 14 seconds	11
76	Riya	67 %	1 minutes 21 seconds	10
77	pepsu Gujjar	67 %	1 minutes 24 seconds	10
78	manpreet	67 %	1 minutes 45 seconds	10
79	anamta	67 %	1 minutes 57 seconds	10
80	Dyfydu	67 %	1 minutes 58 seconds	10
81	Param	67 %	3 minutes 57 seconds	10
82	Mansi	67 %	5 minutes 54 seconds	10
83	Ronin Akagami	67 %	6 minutes 6 seconds	10
84	Yash Kushwaha	67 %	6 minutes 25 seconds	10
85	sun	67 %	6 minutes 28 seconds	10
86	maokidbfhiubirbd fdbvkjebqr	67 %	10 minutes 42 seconds	10
87	S	67 %	11 minutes 20 seconds	10
88	MISHTHI	67 %	24 minutes 32 seconds	10
89	Heer	60 %	41 seconds	9
90	Dher	60 %	49 seconds	9
91	A	60 %	2 minutes 57 seconds	9
92	manpreet singh	60 %	3 minutes 4 seconds	9
93	vedanshi	60 %	3 minutes 57 seconds	9
94	H	60 %	4 minutes 17 seconds	9
95	MSA	60 %	5 minutes 14 seconds	9
96	457	60 %	5 minutes 45 seconds	9
97	Aanya Awasthi	60 %	6 minutes 34 seconds	9
98	sneha	60 %	7 minutes 17 seconds	9
99	pawan	60 %	7 minutes 37 seconds	9
100	Soumyadeep shaw	60 %	8 minutes 30 seconds	9
101	abcdef	60 %	8 minutes 31 seconds	9
102	xyz	60 %	8 minutes 33 seconds	9
103	sm	60 %	8 minutes 47 seconds	9
104	pawan	60 %	9 minutes 33 seconds	9
105	Prince	60 %	11 minutes 24 seconds	9
106	Radha	60 %	15 minutes 15 seconds	9
107	Amar	60 %	16 minutes 26 seconds	9
108	KRISH	60 %	20 minutes 53 seconds	9
109	Anant	60 %	23 minutes 37 seconds	9
110	Shehreen	60 %	26 minutes 6 seconds	9
111	manpreet singh randhawa	60 %	52 minutes 15 seconds	9
112	bbnhn	53 %	1 minutes 49 seconds	8
113	te6	53 %	3 minutes 6 seconds	8
114	esakki prema	53 %	6 minutes 2 seconds	8
115	Sasvathana	53 %	7 minutes 36 seconds	8
116	abz	53 %	8 minutes 56 seconds	8
117	kaya	53 %	9 minutes 55 seconds	8
118	manjusha kochare	53 %	11 minutes 28 seconds	8
119	Sjhd	47 %	55 seconds	7
120	otobihik imowa	47 %	1 minutes 8 seconds	7
121	Jj	47 %	2 minutes 28 seconds	7
122	I67	47 %	3 minutes 39 seconds	7
123	sasfwa	47 %	3 minutes 52 seconds	7
124	Nile	47 %	4 minutes 4 seconds	7
125	Sohrav ali	47 %	4 minutes 52 seconds	7
126	Aayush	47 %	7 minutes 2 seconds	7
127	x	47 %	7 minutes 53 seconds	7
128	MSA	47 %	8 minutes 22 seconds	7
129	Ayushman	47 %	9 minutes 33 seconds	7
130	T	47 %	9 minutes 47 seconds	7
131	anamta	47 %	11 minutes 39 seconds	7
132	B..	47 %	12 minutes 25 seconds	7
133	Bio	47 %	13 minutes 24 seconds	7
134	hanshika	47 %	16 minutes 47 seconds	7
135	daksh nagpAL	47 %	21 minutes 23 seconds	7
136	HHUHHHHHHHHHHH	40 %	1 minutes 15 seconds	6
137	hi how are you	40 %	1 minutes 48 seconds	6
138	Harsh	40 %	1 minutes 57 seconds	6
139	Sohrav Ali	40 %	2 minutes 37 seconds	6
140	Sana	40 %	2 minutes 50 seconds	6
141	Nik	40 %	3 minutes 37 seconds	6
142	a	40 %	4 minutes 6 seconds	6
143	shaireen	40 %	4 minutes 43 seconds	6
144	Riya	40 %	5 minutes 10 seconds	6
145	Ganesh prajapati	40 %	6 minutes 13 seconds	6
146	a	40 %	6 minutes 25 seconds	6
147	M	40 %	7 minutes 27 seconds	6
148	shree	40 %	7 minutes 56 seconds	6
149	B	40 %	9 minutes 26 seconds	6
150	bm	40 %	9 minutes 44 seconds	6
151	y	40 %	20570 days 9 hours 58 minutes 40 seconds	6
152	Dheer	33 %	40 seconds	5
153	Krisha	33 %	1 minutes 20 seconds	5
154	Rk	33 %	2 minutes 15 seconds	5
155	zareen	33 %	3 minutes 10 seconds	5
156	Rohit	33 %	4 minutes 10 seconds	5
157	Rupam	33 %	4 minutes 30 seconds	5
158	Nani	33 %	4 minutes 34 seconds	5
159	Mithu. Kumari	33 %	5 minutes 18 seconds	5
160	puneet superstar	33 %	5 minutes 30 seconds	5
161	manpreet	33 %	6 minutes 29 seconds	5
162	Akriti	33 %	12 minutes 31 seconds	5
163	Abhishek Kumar	33 %	13 minutes 20 seconds	5
164	vine	33 %	17 minutes	5
165	adarsh	33 %	19 minutes 35 seconds	5
166	achal	33 %	25 minutes 59 seconds	5
167	Hhjj	27 %	2 minutes 11 seconds	4
168	Dhgd	27 %	2 minutes 13 seconds	4
169	Food	27 %	3 minutes 14 seconds	4
170	kashish devshree	27 %	4 minutes 7 seconds	4
171	Mk	27 %	7 minutes 53 seconds	4
172	Riza	27 %	8 minutes 16 seconds	4
173	Aditi	27 %	8 minutes 20 seconds	4
174	Radhika	27 %	22 minutes 17 seconds	4
175	inzamam	20 %	1 minutes 2 seconds	3
176	khushi	20 %	1 minutes 19 seconds	3
177	H	20 %	1 minutes 21 seconds	3
178	manjusha kochare	20 %	1 minutes 39 seconds	3
179	gujjax pepsu bhai	20 %	1 minutes 43 seconds	3
180	prajal	20 %	2 minutes 3 seconds	3
181	Ruhi	20 %	3 minutes 40 seconds	3
182	रोशन	20 %	4 minutes 15 seconds	3
183	chythra	20 %	8 minutes 26 seconds	3
184	A	20 %	9 minutes 19 seconds	3
185	R	20 %	11 minutes 32 seconds	3
186	Lucky	13 %	43 seconds	2
187	Rohita	13 %	48 seconds	2
188	V	13 %	1 minutes 9 seconds	2
189	@$$$$	13 %	3 minutes 10 seconds	2
190	afzal ansari	13 %	5 minutes 30 seconds	2
191	kihiboto	13 %	5 minutes 36 seconds	2
192	7t	13 %	5 minutes 59 seconds	2
193	Mahmood	13 %	17 minutes 13 seconds	2
194	j	7 %	3 minutes 15 seconds	1
195	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

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Also See: Heredity Class 10 Notes: Simple and Easy to Grasp

About the Quiz

Why Take This Quiz?

Leaderboard – Top Scorers

Key Topics Covered in the Quiz

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