Tag: organisms and their environment

Questions Related to organisms and their environment

Choose the correct answers from the alternatives given .
Which of the following metabolic processes can occur without a net influx of energy from some other process ?

botany organisms and their environment energy flow in food chain food chain and energy flow energy flow in ecosystem

  1. ADP $^+$ P $\rightarrow$ ATP $^+$ H2O

  2. $C _6$$H _{12}$$O _6$ $^+$ $6O _2$ $\rightarrow$ $6CO _2$ $^+$ $6H _2O$

  3. $6CO _2$ $^+$ $6H _2O$ $\rightarrow$ $C _6$$H _{12}$$O _6$ $^+$ $6H _2O$

  4. $CO _2$ + $2H _2O$ $\rightarrow$ $CH _4$ $^+$ $2O _2$

Show answer
Correct Option: B
Explanation:
C$ _6$H$ _1$$ _2$O$6$ + 6O$2$ $\rightarrow$ 6CO$2$ +6H$2$O in this process glucose breaks down to give its hydrogens to the oxygen, it really does not need a lot of energy to begin and to keep going. It simply needs a small spark and then it can keep going until its done.
So, the correct option is 'C$ _6$H$ _{12}$O$ _6$ + 6O$ _2$ $\rightarrow$ 6CO$ _2$ +6H$ _2$O'

Main objective of production of herbicide resistant GM crops is to

botany organisms and their environment energy flow in food chain food chain and energy flow energy flow in ecosystem

  1. Encourage eco-friendly herbicides

  2. Reduce herbicide accumulation in food articles for health safety

  3. Eliminate weeds from the field without the use of manual labour

  4. Eliminate weeds from the field without the use of herbicides.

Show answer
Correct Option: B
Explanation:

Weeds such as String decrease crop yields and quality by competing with crop plants for light, water and nutrients. Weeds are to be removed with the help of herbicide (weed killer). Herbicide tolerance has been developed in maize, cotton, soybean, tobacco, etc. The main aim is to reduce herbicide  accumulation in food products for health safety.

State whether the following statements are true or false .
Energy is anything that occupies space and has weight.

botany organisms and their environment energy flow in food chain food chain and energy flow energy flow in ecosystem

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

The matter is anything that occupies space and has mass. Energy is the capacity for doing work. The difference between matter and energy is that energy is produced from matter yet has no mass.

So, the correct option is 'False'.