Biology and Human Welfare
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Human Health and Diseases
SubtopicHuman Health and Diseases under Biology and Human Welfare for Grade 12 ICSE.
Preview questions (no answers)
- 1.
The addictive property of tobacco is primarily due to the presence of:
A.Tar
B.Carbon monoxide
C.Nicotine
D.Resin
- 2.
Which of the following is a secondary lymphoid organ?
A.Bone marrow
B.Thymus
C.Lymph nodes
D.None of the above
- 3.
The injection given against a snake bite contains:
A.Antigens
B.Attenuated pathogens
C.Preformed antibodies
D.Antibiotics
Download the worksheet for Biology and Human Welfare - Human Health and Diseases to practice offline. It includes additional chapter-level practice questions.
Strategies for Enhancement in Food Production
SubtopicStrategies for Enhancement in Food Production under Biology and Human Welfare for Grade 12 ICSE.
Preview questions (no answers)
- 1.
Management of animals for milk and its products for human consumption is called:
A.Poultry farming
B.Dairying
C.Fisheries
D.Apiculture
- 2.
Which of the following is a common poultry bird used for egg production?
A.Leghorn
B.Jersey
C.Murrah
D.Hissardale
- 3.
In tissue culture, which hormone ratio is generally used to promote shoot formation from a callus?
A.High Auxin to Low Cytokinin
B.Low Auxin to High Cytokinin
C.High Gibberellin to Low Auxin
D.Equal amounts of Ethylene and Auxin
Download the worksheet for Biology and Human Welfare - Strategies for Enhancement in Food Production to practice offline. It includes additional chapter-level practice questions.
Microbes in Human Welfare
SubtopicMicrobes in Human Welfare under Biology and Human Welfare for Grade 12 ICSE.
Preview questions (no answers)
- 1.
Based on the biological control process, identify the correct interaction:
A.Ladybird eats Mosquitoes
B.Dragonflies eat Aphids
C.Bacillus thuringiensis kills Butterfly caterpillars
D.Trichoderma kills Ladybirds
- 2.
Which gas is NOT typically produced during anaerobic sludge digestion?
A.Methane
B.Hydrogen sulphide
C.Oxygen
D.Carbon dioxide
- 3.
The grit (large pebbles and soil) in primary sewage treatment is removed by:
A.Sequential filtration
B.Sedimentation
C.Biological action
D.Anaerobic digestion
Download the worksheet for Biology and Human Welfare - Microbes in Human Welfare to practice offline. It includes additional chapter-level practice questions.