Seed

Question 1

Definition of Seed

Answer 1

Fertilized egg which grow into a zygote which grows into a plant embryo

Question 2

Endosperm

Answer 2

Stored food tissue for the embryo to grow

Question 3

Mature ibile becomes what..?

Answer 3

1. The seed coat or
2. The fruit or
3. The seed coat & the fruit

Question 4

Parts of the seed

Answer 4

1. Embryo (from the zygote)
2. Endosperm (may or may not be present in mature seed)
3. Seed coat(from integuments)

Question 5

Where does the seed come from.?

Answer 5

1. By Double Fertilization
   • Fusion of egg & sperm(Zygote)
   • Fusion of two polar nuclei with second sperm(endosperm)

Question 6

Kinds Of Seeds

Answer 6

1. Dicots(Here, endosperm is partially or completely absorbed by the embryo by cotyledons)
2. Monocots(Here, the endosperm is a discrete, major structural seed unit)

Question 7

Seed Components

Answer 7

1. Seed coat (External Structure)
2. Embryo
3. Stored food and mineral reserves
4. Enzymes & Hormones (Found everywhere)

Question 8

DICOTS

A. Under the seed;
1. Hilium means
2. Micropyle means

B. Under the Embryo Axis;
1. Plumule means
2. Epicotyl means
3. Hypocotyl means

Radicle is.?

Answer 8

Under the seed;
1. Hilium means the place where seed was attached to plant.
2. Micropyle means small opening in the integuments

B. Under the Embryo Axis;
1. Plumule means shoot apex, first foliage leaves & Epicotyl
2. Epicotyl means portion beneath leaves
3. Hypocotyl means the portion beneath cotyledonary node; Root/Shoot junction

Radicle is the primary root

Question 9

MONOCOTS

Under the seed;
1. Pericarp means..?
2. Aleurone layer is..?

B. Under the Embryo Axis;
1. Plumule means
2. Epicotyl means
3. Hypocotyl means
4. Coleoptile means

Scutellum is.?
Radicle is..?
Coleorhiza is..?

Answer 9

1. Pericarp means the fruit wall developed from the ovary wall.
2. Aleurone layer is the protein-rich layer which encases the endosperm.

B. Under the Embryo Axis;
1. Plumule means shoot apex, first foliage leaves; and epicotyl
2. Epicotyl means the portion beneath the leaves
3. Hypocotyl means the portion beneath cotyledonary node; Root/Shoot junction
4. Coleoptile means the protective sheath around the shoot apex.

Scutellum means one cotyledon
Radicle is the primary root
Coleorhiza is the protective sheath around the root apex