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

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 II

II and III

I and III

2 / 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 green

Round and green

Round and yellow

Wrinkled and yellow

3 / 15

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

Recessiveness

Independent assortment

Crossing over

Segregation

4 / 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?

50%, 50%

75%, 100%

100%, 75%

25%, 25%

5 / 15

A heterozygous red-eyed female Drosophila mated with a white-eyed male would produce _____.

Half red and half white-eyed females and all white-eyed males in the F1

Half red and half white-eyed females as well as males in the F1

White-eyed females and red-eyed males in the F1

Red-eyed females and white-eyed males in the F1

6 / 15

The genotype of offspring formed from Tt x tt will be

Only TT

TT and tt

Only tt

Tt and tt

7 / 15

Which statement about the genotypes of organisms is correct?

Dominant alleles are only found in homozygotes

The dominant phenotype must be heterozygous

One recessive allele always causes a recessive phenotype

Recessive phenotypes must be homozygous

8 / 15

Which of the following is heterozygous?

ttrr

TTRR

9 / 15

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

Boy

Girl

X-chromosome does not determine the sex of a child

Either boy or girl

10 / 15

Two pink-colored flowers on crossing resulted in 1 red, 2 pink, and 1 white flower progeny. The nature of the cross will be

No fertilization

Double fertilization

Cross-fertilization

Self-pollination

11 / 15

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

75 % dominant, 25 % recessive

25 % dominant, 50 % heterozygous, 25 % recessive

50 % dominant, 50 % recessive

All dominant

12 / 15

Which of the following statements is incorrect?

For every hormone there is a gene.

For the production of every enzyme there is a gene.

For every molecule of fat there is a gene.

For every protein there is a gene.

13 / 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?

Insufficient information

Trait X

Trait Y

14 / 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.

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

A is false but R is true

A is true but R is false

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

15 / 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.

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

A is true but R is false

A is false but R is true

Your score is

The average score is 60%

Leaderboard – Top Scorers

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

Why Take This Quiz?

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Key Topics Covered in the Quiz

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