aragonn
The length of a bee’s tongue is proportional to the size of the bee, but it is also true that this proportion is inherited by each bee. Furthermore, the bee tongue is usually sized to match the depth of the flower it pollinates, making it possible for the bee to drink the nectar from it. Accordingly, there are both short-tongued and long-tongued bees that drink nectar only from flowers suited to their tongue size. Such bees are called specialists and since they depend on just a few flowers, they are quite vulnerable to changes in nature.
What could be inferred from statements above ?
(A) It is by studying the species of flower a bee pollinates that entomologists determine the exact body size of the bee and the species it belongs to.
(B) It is likely that a short tongued bee may have a problem drinking nectar from a flower that has a longer than average depth but a long tongued bee can easily sap the nectar of any kind of flower.
(C) Drastic changes in the flora of a land could affect the existence of certain bee species.
(D) The type of honey produced by the bees depends heavily on the flowers they pollinate.
(E) Across various bee species, the kind of flower a particular type of bee pollinates is exclusive from that pollinated by another type of bee.
(A) It is by studying the species of flower a bee pollinates that entomologists determine the exact body size of the bee and the species it belongs to.
No information on how entomologists determine the size and species of the bee. We do know that certain species depend on certain flowers but do entomologists use this info, we don't know.
(B) It is likely that a short tongued bee may have a problem drinking nectar from a flower that has a longer than average depth but a long tongued bee can easily sap the nectar of any kind of flower.
Not known. If stands to reason that a short tongued bee will have difficulty drinking from a greater depth flower but can a long tongue bee easily drink from any flower - we don't know. If the argument is to be believed, a bee's tongue matches the flower - short to short and long to long. Hence, there could be difficulties that long tongue bees face with short flowers too.
(C) Drastic changes in the flora of a land could affect the existence of certain bee species.
Correct. We are given ... Such bees are called specialists and since they depend on just a few flowers, they are quite vulnerable to changes in nature...
Certain bee species are likely to be impacted if flora changes drastically.
(D) The type of honey produced by the bees depends heavily on the flowers they pollinate.
Honey not mentioned so we don't know if this is true.
(E) Across various bee species, the kind of flower a particular type of bee pollinates is exclusive from that pollinated by another type of bee.
We know that "certain bee species" depend on certain flowers. But across various bee species, do different bee species pollinate different flowers exclusively, we don't know. Also, multiple species could be pollinating the same few flowers and could be dependent on them. We are not given that flowers are exclusive to bee varieties.
Answer (C)