After pollination, a pollen tube grows downward through the pistil to the . Group of answer choices

Ovary

Petal

Stigma

Leaf

Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

Animals have a variety of adaptations,including trachea and gills, which allow this key process to occur. which provides the molecules necessary for cellular respiration and efficient atp synthesis?