Energy Flow

Q.

Food we eat act as fuel which provides us energy to do work.

1. True

2. False

Q. The energy flow in an ecosystem is based on the primary productivity of autotrophs.

1. True
2. False

Q. The primary consumers take in chemical potential energy in the form of plant food.

1. True
2. False

Q. If 20 J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain?
$plant\to mice\to snake\to peacock$

1. 0.2 J
2. 0.0002 J
3. 0.02 J
4. 0.002 J

Q. If first trophic level represent 100, 000 kcal of energy. According to Lindman's law, how much energy is available to the fourth trophic level?

1. 10 kcal
2. 100 kcal
3. 1, 000 kcal
4. 10, 000 kcal
5. 100, 000 kcal

Q. According to Lindeman's 10% law, only 10% of energy is transferred to next trophic level. What amount of energy will be passed to next trophic level if plants produce 1, 000kcal of energy?

1. 10, 000 kcal
2. 1, 000 kcal
3. 100 kcal
4. 10 kcal
5. 1 kcal

Q. The energy within an ecosystem is fixed and never changes.

1. True
2. False
3. Either
4. Neither

Q. Which one of the following options lists the primary energy source(s) for all forms of life on earth?

1. Inorganic substances and organic substances
2. $N_2$ and $C{O}_2$
3. Light and organic substances
4. Light and inorganic substances

Q. Correct sequence of respiratory loss in plants (P), Herbivores(H) and Carnivores(C) is?

1. P $<$ H $>$ C
2. P $<$ H $<$ C
3. P $>$ H $>$ C
4. P $=$ H $=$ C

Q. Consider the following food chains:
(a)$Plants\to Mice\to Snakes\to Hawks$
(b)$Plants\to Mice\to Hawks$
If energy available at the producer level in both the food chains is 100 J, in which case will hawks get more energy as food and by what factor? Justify your answer.

Q. Which of the following trophics level is occupied by man feeding on curd?

1. $T_2$
2. $T_3$
3. $T_4$
4. $T_1$