Suppose That 100 Pollen Grains Land on a Stigma, and 50

question 58

Multiple Choice

Suppose that 100 pollen grains land on a stigma, and 50 mature seeds are formed in the fruit. What does this indicate about the pollination process and success?

• A) 50% success: 100 pollen grains grew to 50 ovules, and double fertilisation occurred.
• B) 50% success: Evidently, only 50 sperm pollinated 50 anthers.
• C) 50% success: 50 sperm fertilised 50 eggs, and 50 sperm fused with 50 polar nuclei.
• D) 50% success: 50 sperm fertilised 50 eggs, and 50 sperm fused with 100 polar nuclei.

Explore the role of African-Americans and other minorities during World War I and the impact of the Great Migration.

Evaluate the U.S.'s foreign policy shifts and interventions in Latin America during the early 20th century.

Understand the influence of World War I on domestic policies, including prohibition, immigration, and assimilation efforts.

Discuss the legal and societal responses to dissent and perceived threats during World War I in the United States.

---

Definitions:

Phospholipid Bilayer

A critical component of all cell membranes, consisting of two layers of phospholipids which provide barriers and pathways for substances entering or exiting the cell.

Integral Protein

A type of membrane protein that is permanently attached to the biological membrane, playing critical roles in transport and signal transduction.

Chromosomes Condense

The process by which chromosomes become shorter and thicker, making them visible under a microscope, typically occurring during cell division.

Spindle Fibers

Filaments formed during cell division that help segregate chromosomes into the daughter cells.