. Elements of biology; a practical text-book correlating botany, zoology, and human physiology. Biology. FLOWERS 37 less visits, and worked only a little less time than the wasp worked. It is evident that in the course of so many trips to the fields a bee must light on and cross-pollinate many hundreds of Bumblebees; a, queen ; 6, worker ; c, drone. Laboratory Study of a Bumblebee. — The careful study of the bumblebee will give us some insight into the manner in which the bee transfers pollen. Living specimens may be chloroformed and then used dry^ or material which has been preserve
. Elements of biology; a practical text-book correlating botany, zoology, and human physiology. Biology. FLOWERS 37 less visits, and worked only a little less time than the wasp worked. It is evident that in the course of so many trips to the fields a bee must light on and cross-pollinate many hundreds of Bumblebees; a, queen ; 6, worker ; c, drone. Laboratory Study of a Bumblebee. — The careful study of the bumblebee will give us some insight into the manner in which the bee transfers pollen. Living specimens may be chloroformed and then used dry^ or material which has been preserved in formol or alcohol will answer the purpose. The body of an insect is divided into three regions; these may easily be found in the bee. The anterior or front part is the head, the middle is the thorax, and the posterior or hind part is the abdomen. The abdomen in the working bees is terminated in a sharp sting. Look carefully at the abdomen; you will find it is cut up into a series of little rings which taper off at the hind end of the body. These rings are called segments. Notice that the legs and wings are attached to the thorax. The wings are found on the dorsal or upper side of the body, the legs on the lower or ventral surface. Look at a leg with your hand lens. Is it all of one piece or jointed? When a plant or animal structure is fitted to do certain kind or kinds of work, we say that the structure is adapted to its functions. Can you determine how the leg is adapted for movement and for clinging to an object? Can you find any parts adapted to hold pollen ? Notice the collection of stiff hairs on the joint next the body. In the honeybee these hairs are so arranged that they act as receptacles for pollen, which the bee stores there to carry home to the hive. Bees, wasps, and many other insects use pollen as food. The body of the bee, as well as the head and legs, are more or less com- pletely covered with tiny hairs. Are the hairs any better developed m certain parts
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