Crop Seed Physiology Flashcards
Few crops that dominate the agricultural landscape.
Rice, wheat and potatoes
It is the embryonic stage of plant life cycle.
An important part of flowering plant (give rise to a new plant).
Have different shapes and sizes (round,wrinkled, winged or hairy).
They are in dormant condition until they receive adequate sunlight, water and soil.
Seeds
The growth of the plant from a seeds is known as?
Germination
The protective covering that can help seeds remain viable for long periods of time.
Seed Coat
It is the outer thick layer of seed coat that prohibit the entry of sunlight, water and parasites with in the seeds. It also prevent the germination of seeds during unfavorable environmental condition.
Testa
The second inner thin protective layer of seed coat present within the testa. Just like the testa, it also protects the seed and its contents.
Tegmen
The nutritive tissue of the seed, provides nutrients to the seed in the form of starch, carbohydrates and proteins to support the embryo during germination.
Endosperm
It is coconut water, not to be confused with coconut milk, which is harvested from the flesh of fully developed coconuts.
Coconut Endosperm
The most important part of a seed, developed from the fertilized egg. It comprises the following parts:
Epicotyl
Hypocotyl
Radicle
Cotyledons
Embryo
The tiny shoot of an embryo, from which the entire system develops.
Epicotyl
The tip of the epicotyl is called?
Plumule
A plantlet that giving rise to the first true leaves and is grown into shoot plant giving rise to several leaves, branches, flowers, and seeds.
Plumule
The stage of transition for the growing shoot and root of the embryo, the stem of a germinating seedling.
Hypocotyl
The part of a plant embryo that develops into the primary root, tiny roots in the embryo, first root of seed.
Radicle
Are the leaves of the embryo that provide nourishment to the developing plant.
Cotyledons
The first part of a plant to emerge from the seed. They contain reserve food material that provides nourishment to the developing seedling. The function of it is to store food for the growing embryo.
Cotyledons
These comprise a single cotyledon emerging from the seed on germination (cereals) rice, corn, wheat.
Monocotyledonous seeds
These comprise two cotyledons emerging from the seeds on germination.
Dicotyledonous Seeds
When do photosynthetic system starts?
When it is color green or it has green color green pigment. Or once the leaves appear.
Any of a group of plants that produce seeds and include the gymnosperms and flowering plants.
Spermatophytes
Large group of vascular seed plants, the seeds do not develop enclosed within an ovary but are usually borne exposed on the surfaces of reproductive structures, such as cones. (Ex. conifers and cycads.
Gymnosperms or naked seeded
Flowering plant, any of about 300,000 species of flowering plants, the largest and most diverse group within the kingdom Plantae. It represent approximately 80 percent of all the known green plants now living.
Angiosperm
Are the smallest seeds which are only 1/300th of an inch (85 micrometer) long- smaller than can be seed by the unaided eye.
Epiphytic orchid seed
Are vascular seed plants in which the ovule (egg) is fertilized and develops into a seed in an enclosed hollow ovary.
Angiosperm
These seeds are dispersed in the air like minute dust particles. They lack endosperm, tiny, underdeveloped embryos.
Epiphytic orchid seed
Nut is technically a fruit, but we usually eat the seed and discharge the fruit (shell). (T or F)
True
Technically, grains are seeds that are fused to the ovary wall, so they are fruits, even though most of what we eat (nearly all of the nutritional value) is the seed. (T or F)
True
Pine nuts, almonds and Brazil nuts are also seeds even though none of this comes from a nut. (T or F)
True
Two of our favorite non-legume “beans”, - coffee beans and cocoa beans- are seeds.
True
