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Seed Plants: Angiosperms Lecture Outline

16 Questions

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Seed Plants: Angiosperms Lecture Outline

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Questions and Answers

What distinguishes angiosperms from other plants?

Having DNA and cladistic evidence for classification

Being dependent on sporophyte for gametophyte

Having true roots, leaves, stems, flowers, fruits, and seeds

Seeds enclosed in carpel resembling a folded leaf (correct)

What is the composition of a pistil in angiosperms?

No pistil composition in angiosperms

Multiple carpels with different shapes and sizes

Single carpel, or two or more united carpels (correct)

Carpel joined to the calyx

What becomes a fruit in angiosperms?

Pistil

Ovary (correct)

Carpel

Ovule

Which division do bleeding hearts belong to?

Magnoliophyta or Anthophyta Signup and view all the answers

What does DNA and cladistic evidence suggest regarding dicots?

Two groups of dicots should be recognized Signup and view all the answers

What is the distinctive feature of true stems in angiosperms?

Bamboo stems Signup and view all the answers

What is the most primitive flower characterized by?

Long receptacle and many spirally arranged flower parts Signup and view all the answers

In the development of female gametophytes in Phylum Magnoliophyta, how many nuclei are produced after meiosis of the diploid megasporocyte?

Eight Signup and view all the answers

What is the function of the generative nucleus in the male gametophyte of a flowering plant?

Divides to form two sperm cells Signup and view all the answers

What is the primary purpose of pollination in flowering plants?

To transfer pollen grains from anther to stigma Signup and view all the answers

In Phylum Magnoliophyta, where does the fertilization process occur?

Within the ovule Signup and view all the answers

What is the fate of the female gametophyte (megagametophyte) after fertilization in a typical flowering plant?

It nourishes the developing seed Signup and view all the answers

What is the role of male gametophytes in a typical flowering plant?

To facilitate fertilization Signup and view all the answers

Which structure differentiates into integuments that later become the seed coat in Phylum Magnoliophyta?

Ovule Signup and view all the answers

How many nuclei are present in the female gametophyte (megagametophyte) of a typical flowering plant at maturity?

8 nuclei and 7 cells Signup and view all the answers

What is the significance of the micropyle in an ovule of a flowering plant?

Allows entry of pollen to reach the egg cell Signup and view all the answers