QUESTION 1:In which of the following parts of a plant does meiosis occur?

A)AntherB)StigmaC)ShootD)Root

QUESTION 2:What is the name of the fine thread-like

structure found in the nucleus of the cell?

a)Geneb)Cell membranec)Chromosomed)Nuclear membrane

QUESTION 3:Which of the following matches correctly the cell division process and the place this divisions take place?

Cell division

Place that cell divisions occurs

A Mitosis Heart

B Meiosis Skin

C Mitosis Sperm

D Meiosis Liver

QUESTION 4: Which of the following shows the ratio of the number of chromosomes in a sperm to that of chromosomes in a skin cell?

A)1:1B)1:2C)2:1D)2:2

QUESTION 5: The zygote of a mouse has 40 chromosomes. How many chromosomes are there in the skin cell and gamete of a mouse?

Skin cell Gamete

A 20 20

B 20 40

C 40 20

D 40 40

QUESTION 6:Meiosis causes variation in an organism because…………………….

A)Crossing over takes place between chromatids

B)The number of chromosomes in the nucleus is halved

C)Replication process occurs in the first cell division

D)Replication process occurs in the second cell division

QUESTION 7:Cromosomes in the liver cells of a female

human being are

A)22 + XB)22 + YC)44 + XXD)44 + XY

QUESTION 8:What is the percentage of a husband and wife having a male child and a female child at each birth

Male child Female child

A 25% 25%

B 25% 75%

C 50% 50%

D 75% 25%

QUESTION 9: Which of the following shows the chromosome make-up in a zygote which will develop into a male baby?

a)22 + Xb)22 + Yc)44 + XXd)44 + XY

QUESTION 10: Which of the following statements is true about non-identical twins?

A)Two ova are fertilized by two spermsB)The sex of both foetuses is always the sameC)Both foetuses share a placentaD)A fertilized ovum divides into two

QUESTION11: Albinism is caused by…

A)Mutation to the gene which controls the skin colour

B)Mutation to the gene which produces haemoglobin

C)The 45 chromosomes contained in the somatic cell

D)The defect in the structure of chromosome

QUESTION 12: A skin cell of a baby contains 47 chromosomes. Which of the following genetic diseases is the baby suffering from?

a)Haemophiliab)Albinismc)Down’s syndromed)Turner’s syndrome

Question 14: A cell division process produces four daughter cells from a parent cell. In which of the following parts of the body does this process occur?

a)Skinb)Liverc)Alimentary controld)Testis

Question 13: A change which occurs spontaneously to the structure of gene or chromosome in the nucleus of an organism is known as

a)Mitosisb)Mutationc)Variationd)Meiosis

Question 15: Which of the following statements is/are true about mitosis?

I. It only occurs in somatic cellsII.Replication occurs once onlyIII.One parent cell produces four daughter

cellsa)III onlyb)I and II onlyc)II and III onlyd)I, II and III