Smartindia Classroom
CONTENTS
Maths
English
Physics
Chemistry
Biology
History
Geography
Computer
Economics
Back to home
Start Practice
Question-1
Growth involves increase in size and complexity but is not always:
(A)
Complete
(B)
Incomplete
(C)
Drastic
(D)
Uniform
Question-2
In complete metamorphosis, the larva is entirely different from adult, where as in incomplete metamorposis the larva is called:
(A)
Caterpillar
(B)
Maggot
(C)
Wriggler
(D)
Nymph
Question-3
2, 4 - D is called a selective weed killer because:
(A)
it selects and kills all plants
(B)
it selects and kills certain plants
(C)
it selects and kills broad leaved weeds
(D)
it select and kills all weeds
Question-4
The action of growth hormone is:
(A)
Spontaneous but steady
(B)
Fast and drastic
(C)
Slow, gradual and steady
(D)
Slow, but drastic
Question-5
Actively dividing meristematic cells are converted to permanent cells by a process called:
(A)
Development
(B)
De -differentiation
(C)
Transformation
(D)
Differentiation
Question-6
Which statement is correct?
(A)
In human beings growth is regulated by somatotropin produced by pituitary gland.
(B)
In human beings growth is regulated by somatostatin produced by pituitary gland.
(C)
In human beings growth is regulated by adrenalin produced by adrenal gland.
(D)
In human beings growth is regulated by releasing hormones produced by hypothalamus .
Question-7
The chromosome number of the cells produced by mitosis.
(A)
Equal to that of zygote
(B)
Double than that of zygote
(C)
Half to that of the zygote
(D)
More than that of the zygote
Question-8
In a shoot, why does the region of most rapid growth occur at some distance from the shoot tip?
(A)
Auxin is present at the tip only
(B)
Shoot tip contains meristematic cells
(C)
Only that part receives sunlight
(D)
The whole body grows but is inconspicuous.
Question-9
Growth occurs by a type of cell division called:
(A)
Meiosis
(B)
Embryo genesis
(C)
Mitosis
(D)
Blastulation
Question-10
Incomplete metamorphosis is observed in:
(A)
Butterflies and silk worm moths
(B)
Dragon flies and cockroaches
(C)
Honey bees and wasps
(D)
Spiders and scorpions
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
