Chapter 1
Introduction to Biology
Short questions.
(1) Define macromolecules.
Molecules
having high molecular weight are called macromolecules.
Example:
Proteins, carbohydrates etc.
(2) Define Biotechnology.
The
branch which deals with the practical application of living organism to make
substances for the welfare of mankind is called biotechnology.
(3) Define Organ system.
It is defined as “The different
organs performing related functions are organized together in the form of organ
system. In this system ,every organ carries out its specific function and all
organs appear as the function of that
organ system.
(4) Write the scientific contributions of Bu Ali Sina?
(a) His book “Al qanun-fi al tib is known
as the canon of medicine in West.
(b)
He is honored as the founder of medicine and called as
Avi Cenna in the West.
(5) Name some unicellular organisms.
Amoeba, Bacteria, Euglena
and Paramecium are some unicellular organisms.
(6) Differentiate between cell biology and histology.
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Cell Biology
|
Histology
|
|
This
branch deals with the study of cells.
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Histology
is the branch which deals with the microscopic study of tissues.
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Remember:
Always write
the difference between two things by putting a line between them.
(7) Define colonial organization.
In this organization,
many unicellular organisms live together but do not have any division of labor
among them. Every organism in a colony live its own life and does not depend on
other cells.
Example:
Volvox is a green alga that
shows colonial organization.
(8) Define parasites.
The organism which takes
food and shelter from living hosts and in return harm them.
Example:
Mosquitoes, etc
(9) What are vegetative organs of a plant?
The parts of plant body
that take part in sexual reproduction are called vegetative organs.
Example:
Stem, roots and leaves, etc
(10)
Define biogeography.
Biogeography includes the occurrence
and distribution of different species of living organisms in different
geographical region of the world. It also applies the knowledge of the
characteristics of particular geographical regions to determine the
characteristics of living organisms found there.
(11)
Write the main
divisions of biology.
Biology has three main divisions :
(a) Zoology
(b) Botany
(c) Micro biology
(12)
Define Bio elements.
The elements which are the
constituents of living organisms are called bio elements.
Example,
Carbon ,hydrogen etc.
(13)
What do you mean by
entomology.
Entomolgy is the branch of biology
which deals with the study of insects.
(14)
What is the scientific
name of frog.
The scientific name of mustard plant
is “Brassica campestris”
Remember :
Scientific name
of every specie is underlined when it is written with hand.
(15)
Define Tissue level.
In multi cellular organisms, when
similar cells are organized into groups ,they are called tissues. Each cell in
a tissue carries on its own life processes but it also carries on some special
processes related to the function of the tissue.
(16)
Define fossils?
The remainder of old plants and animals are called
fossil fules.
(17)Define immunology?
The branch of biology which deals with
the study of immune system of the animals which defend the body against
invading microbes.
(18)Define biosphere
level?
Biosphere level can be defined as the part
of earth inhabited by organisms communities .It constitute all ecosystems and
is called the one of life on earth.
(19)write two
applications of horticulture in daily life?
Horticulture deal with the betterment of
existing varities of plants.It deals with the more yield production of fruits
and crop plants.
(20)Name six important
bioelements?
The six important bioelements are O,C,H,N,Ca, and P.
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