Variations, Heredity and Cell Division

Total Questions: 30

1 - Which of these is not a genetic variation?

A ) Mark of cut on skin ✅
B ) Eye colour
C ) Attached earlobes
D ) Blood group

2 - You are different from your brother and sisters. This is called:

A ) Variation ✅
B ) Adaptation
C ) Hereditary
D ) Mitosis

3 - In humans, the eye colour is developed due to the effect of:

A ) Diet
B ) Environment
C ) Genes ✅
D ) Both 'a' and 'b'

4 - The section of DNA which has information for making a specific protein is called:

A ) DNA strand
B ) Nucleotide
C ) Chromosome
D ) Gene ✅

5 - Chromosomes are made of :

A ) DNA only
B ) Proteins only
C ) DNA , protein and fats
D ) DNA and proteins ✅

6 - The characters which are passed from parents to offspring:

A ) Hereditary characters ✅
B ) Non_inheritable characters
C ) Environmental characters
D ) Natural characters

7 - An event that occurs during interphase:

A ) Division of nucleus
B ) Division of cytoplasm
C ) Duplication of chromosomes ✅
D ) Formation of cell wall

8 - Reduction of chromosomes takes place during:

A ) Mitosis
B ) Meiotic _l ✅
C ) Meiotic _ll
D ) Both mitosis and meiotic _ll

9 - In humans, a sperm has 23 chromosomes.Egg cell has:

A ) 23 chromosomes ✅
B ) 46 chromosomes
C ) No chromosomes
D ) 69 chromosomes

10 - Zygote is formed by the fusion of :

A ) Two sperm cells
B ) Two egg cells
C ) Two somatic cells
D ) Sperm cell and egg cell ✅

11 - During reproduction, living things pass their characteristics to their:

A ) Parents
B ) Grand parents
C ) Offspring ✅
D ) Brother and sister

12 - The transmission of characteristics from parents to offspring is called:

A ) Heredity
B ) Inheritance
C ) Non_inheritance
D ) Both (a) and (b)

14 - Genes are located on:

A ) Chromosomes ✅
B ) Nucleus
C ) Centrosomes
D ) Cell membrane

15 - Chromosomes are _____ structures:

A ) Round
B ) Circular
C ) Thread like ✅
D ) Long

16 - A typical chromosomes consists of arms:

A ) Two ✅
B ) Three
C ) Four
D ) Five

18 - In maize, there are chromosomes:

A ) 20 ✅
B ) 14
C ) 16
D ) 48

19 - In pea, there are chromosomes:

A ) 20
B ) 14 ✅
C ) 16
D ) 48

20 - The DNA molecule consists of _____ strands:

A ) Two ✅
B ) Three
C ) Four
D ) Five

21 - The colour of eyes in an organism is controlled by a:

A ) Zygote
B ) Egg
C ) Chromosomes
D ) Gene pair ✅

22 - A process by which a cell divides into two daughter cells:

A ) Cell Division ✅
B ) Life cycle
C ) Cell cycle
D ) Alternation of generation

23 - Before the start of cell Division, the parent cell passes through a phase called:

A ) Prophase
B ) Interphase ✅
C ) Anaphase
D ) Metaphase

24 - The cells which are produced as a result of cell Division are called:

A ) Parent
B ) Daughter ✅
C ) Primary
D ) Secondary

25 - During interphase _____ in the nucleus are duplicated.

A ) Cytokinesis
B ) Gametes
C ) Chromosomes ✅
D ) DNA

26 - The process of cell Division involves phases:

A ) Two ✅
B ) Three
C ) Four
D ) Five

27 - Nuclear division is followed by:

A ) Cytoplasm
B ) Nucleus
C ) Chromosomes
D ) Cytokinesis ✅

28 - Nucleus is a part of cell,which____ the whole cell actively.

A ) Operate
B ) Control ✅
C ) Functional
D ) Observe

29 - Chromosomes consist of DNA and:

A ) Sperms
B ) Gametes
C ) Proteins ✅
D ) Eggs

30 - DNA is called _____ material.

A ) Hereditary ✅
B ) Meiotic
C ) Plasma
D ) Chromatic