Which one of the following plants keeps its stomata open during the night and close during the day?
Water-lily
Cactus
Cycas
Orchid
B.
Cactus
Cactus plants are grown in water-deficient soils. These keep their stomata close during day time to reduce water loss through stomata! transpiration. They fix CO, in night for photosynthesis by keeping their stomata open for gaseous exchange
Which equation shows the reaction of photosynthesis?
CO2 + H2O → CH2O + O2
6CO2 + 6H2O → C6H12O6 + 6O2 + 6H2O
6CO2 + 6H2O → C6H12O6 + 6O2
C6H12O6 + 6O2 → 6CO2 + 6H2O
The meaning of unification of teaching skills is
To use all teaching skills in one lesson
To choose proper teaching skills in one lesson
To use more helpful teaching aid in one lesson
None of the above
Which of the following is not included in affective aspect?
Receiving
Organisation
Valuing
Analysis
The quality of creative students is
Lack of flexibility
Anxious
Unaware about problem
Lack of intelligence
The change in temperature of a body is 50°C. The change in temperature on the Kelvin scale is
50 K
323 K
122 K
70 K
Three-wire of resistance 1Ω, 2Ω, and 3Ω respectively are connected in 'parallel'. The equivalent resistance of the circuit is
6Ω