questions answer

CHAPTER NO.20
MAN AND BIOLOGY


COMPLETION ITEMS.

Fill in the blanks.

1. Insulin produced by genetic engineering is exactly the same as ordinary _________ insulin.
2. The term “Biotechnology” was introduced in _________.
3. Acetone and methyl alcohol are among the _________ of other type of microbial fermentation.
4. Decomposers are saprotrophs, which feed on faeces and _________ organism.
5. Many bacteria and ________ are decomposers.
6. Decomposers _________ only a small amount of energy.
7. An important function performed by _________ is nitrogen fixation.
8. Timber is used for making ________.
9. Disease and pest resistant varieties have been evolved by ________.
10. __________ is the production of silk by the activity of worm known as silk worms.
11. Often various diseases of silkworm wipe out ___________.
12. Adult silk moth female lays eggs, which _________ in three to four days.
13. Domesticating the honeybee for the honey production is known as __________.
14. A large number of organism damage useful plants and animals, which are called __________.
15. Chemical like ________ are used as insecticide.
16. Contamination of the environment with waste products and other impurities is called _____________.
17. Substances, whose presence in air, water or soil is harmful to living thing and soil, are termed as __________.
18. Sources of water and soil pollution are municipal wastes, industrial wastes and _______ wastes.
19. Carbon monoxide combines with _________ to reduce oxygen in blood.
20. Untreated sewage is source of germs causing cholera and _______.

TRUE/FALSE ITEMS.

Classify the following statements into true/false.

1. Virus may pass from the infected mother to the fetus during pregnancy.
2. Poliomyelitis is caused by bacteria.
3. Influenza is an illness affecting upper respiratory tract.
4. Bacillary dysentery is caused by round shaped (Cocci) bacteria.
5. Vibro cholera is non-capsulated and cannot with stand dry condition.
6. Antibiotics are used to kill pathogenic bacteria but they do not harm viruses.
7. Mosquito is a biological vector for the transmission of yellow fever pathogen.
8. In man, the parasite enters through the bite of a male anopheles mosquito.
9. Tapeworms are hermaphrodite i.e. each proglottid has one sex.
10. Thread worms are very small, only 2 inches long
11. The liver fluke is roundworm.
12. Athlete’s foot is also a bacterial disease.
13. Protozoan are single tissue organism, which vary in size and shape.
14. All of the bacteria are not pathogens.
15. Viruses are only visible under electric microscope.
16. Large amount of acid rain may cause death of fishes in lakes and rivers.
17. The warming of earth surface is called Green House Effect.
18. Oxygen is the upper atmosphere forms ozone that forms a layer over the earth.
19. Untreated sewage is source of germs causing cholera and typhoid.
20. Carbon dioxide combine with haemoglobin to reduce oxygen in blood.

MULTIPLE CHOICE ITEMS.

You are provided with four options in the following items. Select the most appropriate one.

1. Any organism which acquires a foreign gene is called:
A) Pathogen B) Parasite
C) Transgenic organism D) Antibody
2. By the half of genetic engineering, most substance produce:
A) Glucose B) Glycogen
C) Insulin D) Fructose
3. Genetic engineering is of great importance and has application in:
A) Agriculture B) Chemical & drug industries
C) Medicine D) All of the above
4. The use of biotechnology is production of:
A) Antibiotics B) Single cell protein
C) Fertilizers D) All of the above
5. In baking industry brewing is carried out by:
A) Bacteria B) Yeast
C) Cyanobacteria D) Protozoans
6. Nitrogen is an important of:
A) Carbohydrate B) Protein
C) Fats D) None of the above
7. Nitrogen fixing bacteria live inside the roots of:
A) Flowering plants B) Non-flowering plants
C) Leguminous plants D) Rhizopus
8. Paper industry is also dependent upon:
A) Glucose B) Cellulose
C) Plastics D) Wood
9. Sericulture is the production of:
A) Cotton B) Cellulose
C) Silk D) Glucose
10. Domesticating the honey bee for the honey production is known as:
A) Apiculture B) Sericulture
C) Agriculture D) Aquacultures
11. In honey bee the drones are:
A) Female flies B) Male flies
C) Workers D) None of the above
12. A large number of destructive organisms (insects etc.) are called:
A) Insect B) Pest
C) Butterflies D) All of the above
13. The substances whose presence in air, water or soil is harmful are termed as:
A) Wastes B) Pollution
C) Pollutants D) Harmful substances
14. Air pollution is mainly caused by:
A) Dust B) Sulfur dioxide
C) Hydrocarbons D) All of the above
15. The ozone layer around the earth filter out:
A) Light B) Bacteria
C) Ultraviolet rays D) Water vapours.
16. Rain containing the atmospheric pollutant of acid is known as:
A) Good rain B) Acid rain
C) Pollutant rain D) None of the above
17. Forest prevent excessive soil erosion during:
A) Storm B) Wind
C) Flood & rain D) None of the above
18. The protozoan as secondary consumers feed on these:
A) Parasite B) Bacteria
C) Organic wastes D) All of the above
19. Pathogenic micro organisms are:
A) Viruses B) Bacteria
C) Fungi & protozoan D) All of the above
20. Common fungal human diseases are:
A) Ring worm B) Athletes foot
C) Hitoplasmosis D) All of the above


MATCHING ITEMS.

Match each item in column ‘A’ with an appropriate statement given in column ‘B’.

1. COLUMN ‘A’ COLUMN ‘B’
i. Viral disease a) Ring Worm
ii. Fungal disease b) Plasmodium
iii. Bacterial disease c) Chicken pox
iv. Malaria d) Cholera

2. COLUMN ‘A’ COLUMN ‘B’
i. Ringworm a) Parasite
ii. Liver fluke b) Electron microscope
iii. Mosquito c) Skin disease
iv. Virus d) Vector

3. COLUMN ‘A’ COLUMN ‘B’
i. Proglottids a) Energy
ii. Respiration b) Carbon dioxide
iii. Acid Rain c) Tape warm
iv. Green house effect d) Sulphur dioxide





4. COLUMN ‘A’ COLUMN ‘B’
i. Insulin a) Yeasts + Amylase
ii. Foreign gene b) Biabetes mellitus
iii. Bread making c) Fermentation
iv. Anaerobic d) Transgenic bacteria

5. COLUMN ‘A’ COLUMN ‘B’
i. Amoeboid dysentery a) Tuberculosis
ii. Diphtheria b) Protozoa
iii. BCG vaccine c) Housefly
iv. Vector d) Bacteria


ANSWERS.

COMPLETION ITEMS.

1. Human 8. Furniture 15. DDT
2. 1970 9. Plant 16. Pollution
3. By-products 10. Sericulture 17. Pollutants
4. Dead 11. Cocoons 18. Agriculture
5. Fungi 12. Hatch 19. Haemoglobin
6. Absorb 13. Apiculture 20. Typhoid
7. Bacteria 14. Pests

TRUE/FALSE ITEMS.

1 2 3 4 5 6 7 8 9 10
T F T F T T T F F F

11 12 13 14 15 16 17 18 19 20
F F F T F T T T T F

MULTIPLE CHOICE ITEMS.

1 2 3 4 5 6 7 8 9 10
C C D D B B C D C A

11 12 13 14 15 16 17 18 19 20
B B C D C B C B D D



MATCHING ITEMS.

1. i. ii. iii. iv. 2. i. ii. iii. iv.
c a d b c a d b

3. i. ii. iii. iv. 4. i. ii. iii. iv
c a d b b d a c

5. i. ii. iii. iv.
b d a c