[1]Introduction To Biology

Question 1

What is Biology?

Answer 1

Biology is a science which is focused on studying of living organisms.

Question 2

What are the 3 branches of Biology?

Answer 2

1. Zoology
2. Botany
3. MicroBiology

Question 3

What are the 7 Areas of Biology?

Answer 3

1. Cell Biology [study of cells]
2. Histology [studying tissues]
3. Anatomy [studying about gross structure]
4. Physiology [studying function]
5. Biochemistry [studying biological molecules]
6. Genetics [studying of inheritance]
7. Ecology [studying environment]

Question 4

What is the belief on the first formed organisms?

Answer 4

Heterotrophic
Anaerobic
Prokaryotes

Question 5

How long ago were the first organisms formed?

Answer 5

3.5 bya

Question 6

What type of relationship is present between the living and inanimate world?

Answer 6

Dynamic Relationship

Question 7

Define ‘Natural Resources’

Answer 7

Natural Resources are the sources of materials and energy found naturally which are used in everyday life for economic development.

Question 8

What are the results due to Over Exploitation of ‘Natural Resources’ ?

Answer 8

1.Environmental Pollution
2.Loss of Biodiversity
3.Desertification

Question 9

Why is there a Over use of ‘Natural Resources’ ?

Answer 9

Due to increase in the human population

Question 10

What is ‘Sustainable Food Production’?

Answer 10

Sustainable Food Production is the Production of sufficent amount of food for the human population using environmentally safe methods.

Question 11

What are the methods that can be used for sustainable food production?

Answer 11

1. Production of high yeilding plant and animal varieties
2. Production of disease resistant plant and animal varieties
3. Improving Post Harvest technological methods

Question 12

Explain the terms ‘communicable diseases’ and ‘non communicable diseases’

Answer 12

Communicable Diseases -Infectious/Transmissible diseases
Non Communicable Diseases -Non Infectious /Transmissible diseases

Question 13

What are the Factors organisms are diverse based on?

Answer 13

1. Size
2. Shape
3. Form
4. Habitat

Question 14

Name the 7 main characteristics of organisms.

Answer 14

1. Order & Organization
2. Growth & Development
3. Irritability & Coordination
4. Heredity & Evolution
5. Adaptation
6. Metabolism
7. Reproduction

Question 15

Define ‘Metabolism’

Answer 15

Metabolism is the sum of all biochemical activities taking place in an organism.

Question 16

Define ‘Growth’ & ‘Development’

Answer 16

Growth is the Irreversible Increase of dry mass
Development is the Irreversible Changes that takes place in the lifespan of an organism

Question 17

Define ‘Irritability’.

Answer 17

Irritability is the ability to respond to stimuli from both internal and external environment.

Question 18

How does Movement Occur?

Answer 18

Due to Irritability & Coordination

Question 19

Explain ‘Adaptation’

Answer 19

Adaptation is the peculiarity of sturcture/physiology or behaviour that promotes the likelihood of an organism’s survival in a particular environment.

Question 20

Explain ‘Reproduction’

Answer 20

Reproduction is the Ability to produce offspring for continous existence of species

Question 21

What is Evolution?

Answer 21

Evolution is the ability of organisms to change over time as a result of genetic modification

Question 22

What are the Non-Living entities showing Evolution?

Answer 22

1.Crystals Grow
2.Waves Move

Question 23

What is the difference between Non-Living entities and Living showing Evolution?

Answer 23

Only Living display all these characteristics simultaneously.

Question 24

What is the structural and functional unit of life?

Answer 24

Cell

Question 25

Construct the hierarchieal level of organisms.

Answer 25

Molecules - Organelles - Cells - Tissues - Organs - Organ Systems - Organisms - Population - Community - Ecosystems - Biosphere