10 Questions
What is the defining characteristic that distinguishes angiosperms from gymnosperms?
Presence of flowers and fruits
Which term is derived from the Greek words for 'container, vessel' and 'seed'?
Angiosperm
What is the approximate number of known species of angiosperms?
300,000
What is the composition of xylem in angiosperms?
Vessel elements
Which group of plants includes a vast majority of broad-leaved trees and shrubs?
Angiosperms
What is the clade commonly called angiosperms?
Angiospermae
What is the approximate number of known genera of angiosperms?
13,000
What type of plants were the ancestors of flowering plants distinguished from?
Gymnosperms
What is the meaning of the term 'angiosperm' derived from the Greek words ἀγγεῖον and σπέρμα?
Seeds are enclosed within a fruit
What distinguishes angiosperms from gymnosperms in terms of seed enclosure?
Fruits completely envelop the seeds
Study Notes
Angiosperms vs. Gymnosperms
- Angiosperms are distinguished from gymnosperms by the presence of flowering structures and fruits that enclose seeds.
Etymology
- The term 'angiosperm' is derived from the Greek words ἀγγεῖον (container, vessel) and σπέρμα (seed), meaning 'seed in a container'.
Diversity
- There are approximately 400,000 known species of angiosperms.
- There are approximately 13,000 known genera of angiosperms.
Xylem Composition
- In angiosperms, xylem is composed of tracheids, vessels, and xylem parenchyma cells.
Classification
- Angiosperms are also known as the clade 'Anthophyta' or 'Magnoliophyta'.
- This group of plants includes a vast majority of broad-leaved trees and shrubs.
Evolution
- The ancestors of flowering plants were distinguished from other plants, specifically the gymnosperms.
Seed Enclosure
- Angiosperms are characterized by the enclosure of seeds in fruits, unlike gymnosperms, which have seeds exposed or naked.
Test your knowledge of flowering plants with this quiz! Explore the diverse world of angiosperms, including forbs, grasses, broad-leaved trees, shrubs, and more. See how much you know about these vital components of the plant kingdom.
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