What are Angiosperms? They are the most complex green flowering plants They are vascular plants They have well-developed and complete flowers They are seed plants with seeds enclosed in the fruit They are mainly terrestrial plants
Angiosperms, also known as flowering plants, are the largest and most diverse group of plants on Earth, with over 300,000 known species. They are found in all habitats, from the tropics to the Arctic, and from the mountains to the oceans.
Angiosperms are distinguished from other plants by their reproductive structures, which include flowers and fruits. Flowers are the reproductive organs of angiosperms, and they contain both male and female reproductive structures. Fruits are the ovaries of angiosperms, and they contain seeds.
Angiosperms are important to humans and other animals in a number of ways. They provide food, fibre, medicine, and ornamental plants. Angiosperms also play an important role in the environment by providing wildlife habitat and helping regulate the climate.
Here are some of the key characteristics of angiosperms:
- They produce flowers and fruits.
- Their seeds are enclosed in a fruit.
- They have vascular tissue, which allows them to transport water and nutrients throughout the plant.
- They have a well-developed root system, which helps them to anchor themselves to the ground and absorb water and nutrients.
- They have a variety of leaves, which are specialized for photosynthesis Photosynthesis and other functions.
Angiosperms are divided into two main groups: monocots and dicots. Monocots have a single cotyledon (seed leaf) in their seeds, while dicots have two cotyledons. Monocots also have a different vascular tissue arrangement than dicots.
Some examples of angiosperm include:
- Monocots: grasses, lilies, orchids, palms, bananas
- Dicots: roses, trees, vegetables, fruits
Angiosperms are an essential part of the Earth’s ecosystem. They provide food, fibre, medicine, and ornamental plants for humans and other animals.
They also play an important role in the environment by providing habitat for wildlife and helping to regulate the climate.
Angiosperms can be subdivided into two classes according to the number of seed leaves (cotyledons).
These are (i) Dicotyledonous plants and (ii) Monocotyledonous plants.
Dicotyledonous Plants of Angiosperm
Characteristics of Dicotyledonous Plants as Angiosperm
They bear seeds which have two seeds leave or cotyledons The vascular bundles of each stem are arranged in a regular pattern Their floral parts exist in groups of four or five
The leaves have veins arranged in a branched network They have a tap root system They usually undergo secondary growth Examples include mango, orange, cowpea, groundnut, and balsam plant.
Monocotyledonous Plants of Angiosperms
Characteristics of Monocotyledonous Angiosperms
They bear seeds which have only one seed leaf (cotyledon) The vascular bundles of the stem are scattered.
Their floral parts exist in groups of three or multiples of three Their leaves have veins running parallel to one another They have fibrous root systems They do not undergo secondary growth Examples are the maize plant. Rice, oil palm trees and guinea grass Some major
Differences between Monocotyledonous and Dicotyledonous angiosperm
They possess only one seed lead or cotyledon
They possess two seed leaves or cotyledons(ii) They have scattered vascular bundles of stem arranged in a regular pattern(iii)They have fibrous root system They have tap root system (iv)They exhibit hypogeal germination
They exhibit epigeal germination (v) Floral parts exist in groups of three or multiples of three The floral parts exist in groups of four or five (vi)They possess parallel venation They possess net venation
(vii)There is the presence of a large pith, and ring of vascular bundle in the centre of the stem There is the presence of a xylem (water-conducting tissue) in the centre of the stem (viii)They do not undergo secondary growth They undergo secondary growth
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