Question

Tiger lies at the apex of the food chain because
A. Tiger has maximum biomass
B. Tiger feeds on a number of herbivores which ſeed on a number of plants
C. Tiger has many enemies
D. Tiger is omnivorous

Answer 1

Hint: The organisms in the ecosystems are classified into different types, based on the food they eat, and these classified organisms are placed in the food web at different levels which are termed as trophic levels, in a similar manner tiger is placed in top trophic level or at the apex.

Complete answer:
The Tigers are animals that feed on herbivores or primary consumers, so tigers are considered as secondary consumers and placed in the 3rd trophic level of the food chain pyramid.
Different levels of the food chain pyramid are:

In level 1: consists of all green plants and algae, they are called producers, as they prepare food by themselves by a process called photosynthesis.
Level 2: The organisms in this level depend on level 1 that is plants, algae, hence this is called primary consumers and also herbivores, where they eat only plants and algae for their energy. Example: rabbits, cows, goats
Level 3: The organisms which eat only herbivores for their energy, where this is called secondary consumers or carnivores. Example: lion, fox rats, tigers.
Level 4: Animals in this level are called tertiary consumers; they include carnivores (level 3 animals) and omnivores which means eat both plants and animals.
Level 5: It is the last trophic level where they prey on all levels and always be at the top of the food chain, so they are called apex predators. So level 5 organisms have come on top of the food chain as there are no predators for themselves.

So from the above explanation, the correct option is B.

Note: The food chain pyramid consists of different levels, and energy from one trophic level to other trophic levels is always decreased, and primary producers such as plants always occupy the first trophic level of the pyramid.