The number of steps in a food chain can never be more than

1. Four
2. Five
3. Six
4. Seven

Sameer while studying the topic of 'Interdependence between organisms' found that some organisms live together and benefit each other. Which of the following is a suitable example of such a relationship ?

1. Algae
2. Bacteria
3. Fungi
4. Lichen

Latika has prepared a food web which is a network of interconnected food chains. Which of the following are involved in a food web?

1. Producers
2. Sunlight
3. Herbivores
4. Secondary consumers

1. Only 2 and 3
2. Only 1, 2 and 3
3. Only 1, 3 and 4
4. Only 1 and 3

Assertion (A): All plant eating animals are considered as primary producers.

Reason (R): Producers are the first step of the food chain which can supply food to the next trophic level.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.