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Published on: 29/08/2022
QB365 provides a detailed and simple solution for every Possible Creative Questions in Class 12 Biology Subject - Botany - Ecosystem, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 12th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
Spindle shaped pyramid is a character of ______
Pond ecosystem
Grassland ecosystem
Parasite ecosystem
Forest ecosystem
2.
Pyramid of numbers with broad base indicates ______
High population of old individuals
Low population of young individuals
High population of young individuals
Low population of old individuals
3.
The type of ecosystem with maximum net primary productivity is________
Desert ecosystem
Deciduous forest ecosystem
Tropical rain forest ecosystem
Grassland ecosystem
4.
The upright pyramid is not a feature of _______
Pond ecosystem
Grassland ecosystem
Forest ecosystem
Terminal ecosystem
5.
Which one of the following is not a functional unit of an ecosystem?
Productivity
Stratification
Energy flow
Decomposition
6.
Which of the following food chain is in improper sequence?
Plants ~ snake ~ rabbit ~ lizard ~ eagle
Plants ~ grasshopper ~ lizard ~ snake ~ hawk
Plants ~ lizard ~ rabbit ~ snake ~ eagle
Plants ~ rabbit ~ lizard ~ hawk ~ eagle
7.
If 1200 Joules of solar energy is trapped by producers, how much of Joules of energy does the organism in the third trophic level will receive?
120 Joules
12 Joules
1.2 Joules
0.12 Joules
8.
Which is irrelevant to the first law of thermodynamics?
Energy can be transmitted from one system to other in many forms.
Energy transformation results in reduction of free energy.
Energy can neither be created nor destroyed.
Energy in the universe is constant.
9.
Which group of organism occupies the third tropic level in an ecosystem?
Primary consumers
Secondary consumers
Secondary carnivores
Omnivores
10.
Identify the incorrect statement
Carbon stored in oil is referred as Grey carbon
Carbon stored in atmosphere is referred as Blue carbon
Carbon stored in industrialized forests is referred as Green carbon
Carbon emitted from gas, died engine is referred as Black carbon
11.
Photosynthetically Active Radiation ranges between the wavelength of __________
400 - 600 nm
600 - 700 nm
400 - 500 nm
400 - 700 nm
12.
Which is not a macro consumer?
Herbivore
Carnivore
Omnivore
Decomposer
13.
Pick out the edaphic factor among the following.
Rain fall
Temperature
Soil pH
Latitude
14.
Identify the incorrect option among the following component sequence.
air, water, sunlight and temperature
latitude, altitude, direction of mountain and aptitude
soil air, pH of soil, saltwater and soil moisture
carbohydrate, protein, lipids and humic substances
15.
Ecosystem is the structural and functional unit of ecology. This statement was given by _______
Tansloy
Odum
Charles Elton
Edwin
1.
(d)
Forest ecosystem
2.
(b)
Low population of young individuals
3.
(c)
Tropical rain forest ecosystem
4.
(a)
Pond ecosystem
5.
(b)
Stratification
6.
(b)
Plants ~ grasshopper ~ lizard ~ snake ~ hawk
7.
(c)
1.2 Joules
8.
(b)
Energy transformation results in reduction of free energy.
9.
(b)
Secondary consumers
10.
(c)
Carbon stored in industrialized forests is referred as Green carbon
11.
(d)
400 - 700 nm
12.
(d)
Decomposer
13.
(c)
Soil pH
14.
(b)
latitude, altitude, direction of mountain and aptitude
15.
(b)
Odum
12th Standard Syllabus & Materials
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History
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Computer Science
Business Maths and Statistics
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Maths
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