Smartindia Classroom
CONTENTS
Maths
English
Physics
Chemistry
Biology
History
Geography
Computer
Economics
Back to home
Start Practice
Question-1
The optimal time for fertilization to occur within the menstrual cycle is:
(A)
At the beginning of the cycle.
(B)
At the middle of the cycle
(C)
At the end of the cycle
(D)
Any time during the cycle.
Question-2
During menstrual flow, what body structure secretes hormones into the bloodstream to "direct" another ovarian follicle to begin rapid growth?
(A)
Ovary
(B)
Pituitary gland
(C)
Uterus
(D)
Thyroid gland
Question-3
About what percent of zygotes die shortly after fertilization?
(A)
10 percent
(B)
23 percent
(C)
33 percent
(D)
43 percent
Question-4
How do gametes differ from other cells in the body?
(A)
Contain no chromatids
(B)
Contain one half the number of chromosomes that other cells have
(C)
Contain twice the number of genes that other cells have
(D)
Contain thrice the number of genes that other cells have
Question-5
The placenta is the organ that:
(A)
Transfers maternal nutrients to the fetus.
(B)
Protects the fetus against infectious organisms
(C)
Directly connects the fetal and maternal blood supplies
(D)
Connects the embryo to the vaginal wall
Question-6
Long, threadlike structures made of protein and nucleic acid containing hereditary materials are known as :
(A)
Genomes
(B)
Chromosomes
(C)
DNA
(D)
Genes
Question-7
The prenatal development of the organs of the fetus assume their specialized functions during the :
(A)
Germinal stage
(B)
Embryonic stage
(C)
Fetal stage
(D)
Critical stage
Question-8
As a result of cleavage, the zygote becomes transformed into a hollow ball of cells called the:
(A)
Mitosis
(B)
Blastocyst
(C)
Chorion
(D)
Ectoderm
Question-9
The principal male sex hormones are:
(A)
Estrogen and progesterone
(B)
Estrogen and testosterone
(C)
Testosterone and androsterone
(D)
Testosterone and semen
Question-10
Sex cells (sperm and ova) are called:
(A)
Alleles
(B)
Genes
(C)
Gametes
(D)
Zygotes
Your Score 0/10
Click
here
to see your answersheet and detailed track records.
Cambridge Secondary Grade 9
IGCSE
Practice in Related Chapters
The Interdependence of Living Organisms
Feeding
Keeping Healthy
Transport in Plants
Classification
Cells and Tissues
Movement in and out of Cells
Personal Health
Animal Nutrition
Reproduction
Sensitivity
Cells the Building Blocks
Genetics
The Skeleton, Muscles and Movement
A Sexual Reproduction and Cloning Plants
The Senses
Survival
Co-ordination
Energy for Respiration
The Chemicals of Living Cells
How Substances Get In and Out of Cells
Plants for Food
Photosynthesis and Nutrition in Plants
Plant Structure and Function
Food and Diet
The Human Impact on the Environment
Digestion, Absorption and Use of Food
The Blood Circulatory System
Breathing
Excretion and the Kidneys
Human Reproduction
Classification
Conservation
Micro Organisms
Reproduction in Flowering Plants
Movement and Locomotion
Growth and Development
Disease: causes, transmission and control
Ecosystems
Population
Powered By
