Q75 of 163 Page 230

The following is a food chain that ends with human:

Plants → bee → human


(a) Explain how plants provide food for bees.


(b) How do bees provide food for humans?


(c) How does this food chain differ from a usual food chain involving human such as: plants goat human?


(d) Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.

a) Bees suck nectar from flowers of the plants. Bees collect nectar and convert it to honey.


b) Humans obtain honey from bees. The honey in bees comes from sucking nectar from flowers.


c) In a food chain comprising plant goat humans, humans directly eat goat meat. Whereas, in this food chain of plants bees and humans, humans do not directly eat bees, they eat honey obtained from bees. In this way the two food chains differ.


d) The food chain given in the question is not really a food chain because humans do not directly eat the bee as a food; they first obtain food from bees in the form of honey and then consume honey.


More from this chapter

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73

Sahara Desert was formed over a period of time due to one of the following uncontrolled activities of man:

 74

The sea water contains water beetles, tadpole, fish and weeds.

(a) Write a food chain comprising all the given organisms.


(b) Which organisms in the food chain is


(i) Herbivore


(ii) Carnivore


(c) Which organisms are


(i) Predators


(ii) Prey


(d) Which organisms can trap solar energy to make food?


(e) Which organism is a secondary consumer?

 76

A food chain occurring in the sea which provides food for many people can be written as:

Phytoplankton → Zooplankton → X → Y


(a) Name one phytoplankton.


(b) Name two zooplanktons.


(c) What could be X?


(d) Name the organism which Y could be.


(e) Which organism in the above food chain is a


(i) Primary consumer, and


(ii) Tertiary consumer

 77

Some hunters are roaming in the plush green forest of Africa. They spot a deer and kill it. They decide to roast the deer there and then eat it. When the hunters had just finished enjoying the feast of roasted deer, a lion attacks them. The lion kills one of the hunters and eats his flesh.

(a) Write a food chain which provides food to lion in this case.


(b) Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?


(c) Which other animal in the forest could have been in place of lion?


(d) How does the above food chain differ from the food chain such as:


plants → goat → man?



a) Humans are at the end of most of the food chains in which they occur (as this picture of man taking home a fish for food shows)


b) But sometimes luck runs out and humans are forced to become food for others (as this picture of lion eating a man shows). Here the human is no longer at the end of food chain. Look at the miracle of GOD: hunter has become hunted!