I believe the answer is D
Intermolecular hydrogen bonds
The answer is A. anther and ovary.
The female part of an angiosperm flower is called a pistil and it consists of a style, stigma and ovary. The male part of an angiosperm flower is called a stamen and it consists of an anther and corolla. Thus, among all choices, choice A is the answer.
Choice B - anther is the male part of the flower, but sepal is a protective part of the flower and not reproductive.
Choice D - stigma is the female part of the flower, but sepal is a protective part of the flower and not reproductive.
Choice C - "vary" is not a word, but it is a mistake and it should be "ovary," the answers could be both choice A and C.
Transpiration<span> is the process which moisture is carried through plants from roots to small pores on the under part of leaves, where it changes to water vapor and is released to the earth. </span>Transpiration<span> is essentially evaporation of </span>water<span> from plant leaves.</span>