Chapter : 4. Diversity In Living Organism
This Biology lessons include the basic concept of Angiosperms, Dicotyledonse, monocotyledonse with some best examples used by reproductive organs or root system are engaged by flowers
Angiospermae :
Angiosperms are highly evolved plants and they produce seeds that are enclosed within the fruit.
The reproductive organs are aggregated in a flower.
Dicotyledonse -
The seeds produced by these plants have embryos with two fleshy leaves, the cotyledons.
Their leaves have reticulate venation, with a network of veins.
The root system has a prominent tap root.
Examples : Pea (Pisum sativum), potato (Solanum tuberosum), sunflower (Helianthus annuus), rose (Rosa indica), banyan (Ficus religiosa), neem (Melia indica), apple (Malus silvestris).
Monocotyledonse -
The seeds of these plants have only one cotyledon.
Their leaves have parallel venation.
The root system consists of similar fibrous roots.
The vascular bundles are scattered and closed (i.e. lack cambium). Secondary growth does not occur.
Examples : Maize (Zea mays), Wheat (Triticum vulgare), rice (Oryza sativa), onion (Allium cepa), sugarcane (Saccharum officinarum), barley (Hordeum vulgare), banana (Pandanus), Coconut and grasses.
MONOCOTS DICOTS1 Parallel venation is present in leaf. Reticulate venation is present in leaf.2 Embryo consists of only one cotyledon. Embryo consists of
two cotyledons.3. Example - Maize Example - Pea
Angiosperms are highly evolved plants and they produce seeds that are enclosed within the fruit.
The reproductive organs are aggregated in a flower.
Dicotyledonse -
The seeds produced by these plants have embryos with two fleshy leaves, the cotyledons.
Their leaves have reticulate venation, with a network of veins.
The root system has a prominent tap root.
Examples : Pea (Pisum sativum), potato (Solanum tuberosum), sunflower (Helianthus annuus), rose (Rosa indica), banyan (Ficus religiosa), neem (Melia indica), apple (Malus silvestris).
Monocotyledonse -
The seeds of these plants have only one cotyledon.
Their leaves have parallel venation.
The root system consists of similar fibrous roots.
The vascular bundles are scattered and closed (i.e. lack cambium). Secondary growth does not occur.
Examples : Maize (Zea mays), Wheat (Triticum vulgare), rice (Oryza sativa), onion (Allium cepa), sugarcane (Saccharum officinarum), barley (Hordeum vulgare), banana (Pandanus), Coconut and grasses.
MONOCOTS DICOTS1 Parallel venation is present in leaf. Reticulate venation is present in leaf.2 Embryo consists of only one cotyledon. Embryo consists of
two cotyledons.3. Example - Maize Example - Pea
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