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#1 Class 10 Biology Our Environment 2026 Short 2M CBSE
Suggest one best way to dispose of the following wastes : (i) Kitchen waste (ii) Metallic waste (iii) Plastic bottles (iv) Sanitary waste
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#2 Class 10 Biology Our Environment 2026 Short 2M CBSE
Suggest one precaution to be taken before disposing of the following : (a) Sewage from homes (b) Industrial wastes
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#3 Class 10 Biology Our Environment 2026 Short 2M CBSE
Suggest one precaution to be taken before disposing of the following : (a) Sewage from homes (b) Industrial wastes
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#4 Class 10 Biology Heredity 2026 Short 2M CBSE
"Variation is useful for the survival of species over time." Explain this statement with the help of an example.
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#5 Class 10 Biology Heredity 2026 Short 2M CBSE
"Variation is useful for the survival of species over time." Explain this statement with the help of an example.
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#6 Class 10 Biology Heredity 2026 Short 2M CBSE
Do all variations in a species have equal chances of surviving in the environment in which they find themselves ? Explain.
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#7 Class 10 Biology Heredity 2026 Short 2M CBSE
Do all variations in a species have equal chances of surviving in the environment in which they find themselves ? Explain.
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#8 Class 10 Biology Control and Coordination 2026 Short 2M CBSE
Electrical impulse is an excellent means to transmit information in the animal body, but there are some limitations to the use of electrical impulses. State any two limitations.
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#9 Class 10 Biology Control and Coordination 2026 Short 2M CBSE
Electrical impulse is an excellent means to transmit information in the animal body, but there are some limitations to the use of electrical impulses. State any two limitations.
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#10 Class 10 Biology Control and Coordination 2026 Short 2M CBSE
"The timing and the amount of hormone secreted by a gland are regulated in the human body." Justify this statement with the help of an example.
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#11 Class 10 Biology Control and Coordination 2026 Short 2M CBSE
"The timing and the amount of hormone secreted by a gland are regulated in the human body." Justify this statement with the help of an example.
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#12 Class 10 Biology Our Environment 2026 Long 1M CBSE
Assertion (A) : There are generally a greater number of individuals at the lower trophic levels of an ecosystem. Reason (R) : The greatest number is of the producers.
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#13 Class 10 Biology Our Environment 2026 Long 1M CBSE
Assertion (A) : There are generally a greater number of individuals at the lower trophic levels of an ecosystem. Reason (R) : The greatest number is of the producers.
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#14 Class 10 Biology Life Processes 2026 Long 1M CBSE
Assertion (A) : Blood plasma transports carbon dioxide in dissolved form, while oxygen is transported by respiratory pigments. Reason (R) : Carbon dioxide is more soluble in water than in oxygen.
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#15 Class 10 Biology Our Environment 2026 Mcq 1M CBSE
In the given figure (an ecological pyramid with levels T1 at the base, then T2, T3, T4 and T5 at the top), identify the trophic level having maximum concentration of harmful chemicals.
A. T1
B. T5
C. T4
D. T3
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#16 Class 10 Biology Our Environment 2026 Mcq 1M CBSE
Which of the following limits the number of trophic levels in a food chain ?
A. Availability of water
B. Deficient food supply
C. Decrease in energy at higher levels
D. Pollution in air
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#17 Class 10 Biology Life Processes 2026 Mcq 1M CBSE
If the stomatal pore is open, it indicates which situation from the following ?
A. The guard cells have shrunk.
B. The water comes out of the guard cells.
C. Large amount of water is lost through stomata.
D. The guard cells have swelled due to inflow of water.
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#18 Class 10 Biology Life Processes 2026 Mcq 1M CBSE
The following events occur during the process of photosynthesis. Choose the option that indicates the correct events. (i) Oxidation of carbon dioxide to carbohydrates (ii) Conversion of light energy into chemical ener...
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
D. (i) and (iv)
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#19 Class 10 Biology Life Processes 2026 Mcq 1M CBSE
Select the option that represents the correct balanced equation for the process of photosynthesis :
A. $CO_2 + O_2 + H_2O \xrightarrow{Chlorophyll} C_6H_{12}O_6 + H_2O$
B. $6CO_2 + 6H_2O \xrightarrow[Sunlight]{Chlorophyll} C_6H_{12}O_6 + O_2$
C. $CO_2 + H_2O \xrightarrow{Sunlight} C_6H_{12}O_6$
D. $6CO_2 + 12H_2O \xrightarrow[Sunlight]{Chlorophyll} C_6H_{12}O_6 + 6O_2 + 6H_2O$
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#20 Class 10 Biology Heredity 2026 Mcq 1M CBSE
The genotype of green stemmed tomato plant is denoted by 'GG' and that of purple stemmed tomato plant as 'gg'. Hybrid of a cross between these two were self-pollinated to obtain $F_2$ progeny. What will be the ratio o...
A. 2 : 1 : 1
B. 3 : 1 : 0
C. 1 : 1 : 2
D. 1 : 2 : 1
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