The Route Followed by a Sperm from Production to Fertilization

question 47

Multiple Choice

The route followed by a sperm from production to fertilization in a flowering plant is:

• A)A sperm cell,enclosed in a pollen grain with another sperm,is produced in the pistil that explosively ejects it into the air where it is transported to a stigma from which it passes through a pollen tube that grows down the style to the ovary,enters the ovule and joins with the egg cell.
• B)A sperm cell,enclosed in a pollen grain with another sperm,is produced in the anther,transported to a stigma where it passes through a pollen tube that grows down the style to the ovary,enters the ovule and joins with the egg cell.
• C)A sperm cell,enclosed in a pollen grain with another sperm,is produced in the filament,transported to a stigma where it passes through a pollen tube that grows down the style to the ovary,enters the ovule and joins with the egg cell.
• D)A sperm cell,enclosed in a pollen grain with another sperm,is produced in the anther,transported to the pedicel where it passes through a pollen tube that grows down the style to the ovary,enters the ovule and joins with the egg cell.
• E)A sperm cell is produced in the anther,transported to a stigma where it becomes enclosed along with another sperm cell into a pollen grain that grows down the style to the ovary,enters the ovule and joins with the egg cell.

Describe the processes involved in mineral uptake and water transportation in plants.

Recognize the impacts of environmental factors and human activities on plant physiology and soil health.

Explain the role and mechanism of stomata in gas exchange in plants.

Identify and analyze the different strategies plants use for nutrient and water absorption.

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Definitions:

Parabola

A symmetrical, curved, plane curve, which is the graph of a quadratic function.

Focus

A specific point used in the definition of conic sections, such as the vertex of a parabola or one of the two fixed points in an ellipse or hyperbola.

Standard Form

A way to write numbers using the digits 0-9, where each digit has its place value; in linear equations, Ax + By = C, where A, B, and C are integers.

Ellipse

A curve on a plane that surrounds two focal points such that the sum of the distances to the two focal points is constant for every point on the curve.