Seed 2 Flashcards
(40 cards)
What are the two main types of seeds?
Monocotyledonous and Dicotyledonous seeds
Monocotyledonous seeds contain one cotyledon, while dicotyledonous seeds contain two.
What is the function of the hilum in seeds?
It marks the opening through which the pollen tube had entered the ovule
How do seeds absorb water for germination?
Mainly through the micropyle
What is the role of the endosperm in seeds?
It provides nutrition for the growing embryo
What do monocotyledonous seeds contain?
One cotyledon (seed leaf)
Examples include maize and grasses.
What do dicotyledonous seeds contain?
Two cotyledons
Examples include pea, gram, and bean.
What are the two parts of the embryo in a bean seed?
Radicle and Plumule
What does the radicle develop into?
The root
What does the plumule develop into?
The shoot
What is the structure of a maize grain?
A single-seeded fruit with the fruit wall and seed coat fused together
What is the protective layer of a maize grain called?
Grain
What is the outermost layer of the endosperm in maize grain called?
Aleurone layer
What does the seed coat consist of in maize grain?
Testa and Tegmen
What is the function of the testa?
It protects the delicate inner parts of the seed from injury and attack
What is the region of the axis above the cotyledons called?
Epicotyl
What is the region of the axis below the cotyledons called?
Hypocotyl
Fill in the blank: The region of the seed that marks the attachment of cotyledons is called the ______.
Hilum
True or False: The radicle is also referred to as ‘radical’ in chemistry.
False
What shape do most beans resemble?
Kidney-shaped with convex and concave sides
What is the small oval area on the maize grain that marks the location of the embryo called?
Embryo spot
What are the two main types of seeds?
Monocotyledonous and Dicotyledonous seeds
Monocotyledonous seeds contain one cotyledon, while dicotyledonous seeds contain two.
What is the function of the hilum in seeds?
It marks the opening through which the pollen tube had entered the ovule
How do seeds absorb water for germination?
Mainly through the micropyle
What is the role of the endosperm in seeds?
It provides nutrition for the growing embryo
