Question

Answer the following questions and you will be marked as the brainleist​

Answer 1

Answer:

Aleurone (from Greek aleuron, flour) is a protein found in protein granules of maturing seeds and tubers.[clarification needed] The term also describes one of the two major cell types of the endosperm, the aleurone layer. The aleurone layer is the outermost layer of the endosperm, followed by the inner starchy endosperm.[1] This layer of cells is sometimes referred to as the peripheral endosperm. It lies between the pericarp and the hyaline layer of the endosperm. Unlike the cells of the starchy endosperm, aleurone cells remain alive at maturity. The ploidy of the aleurone is (3n) as a result of double fertilization.[2]

Testa

(Top) Monocotyledon (internal structures of a corn seed with stages of germination). Nutrients are stored in the cotyledon and endosperm tissue. The radicle and hypocotyl (region between the cotyledon and radicle) give rise to the roots. The epicotyl (region above the cotyledon) gives rise to the stem and leaves and is covered by a protective sheath (coleoptile). (Bottom) Eudicotyledon (internal structures of a bean seed with stages of germination). All nutrients are stored in the enlarged cotyledons. The radicle gives rise to the roots, the hypocotyl to the lower stem, and the epicotyl to the leaves and upper stem.

Answer 2

Epigeal Germination Hypogeal Germination

In this type of seed germination, the cotyledons come out of the soil, e.g., Castor. The cotyledons remain inside the soil (e.g. Pea).

The cotyledons are brought out of the soil by the excessive growth of the hypocotyl. The hypocotyl does not elongate much. Instead, the epicotyl grows and takes the plumule above the soil.

The terminal region of the hypocotyl is curved to protect the plumule and cotyledons from the friction of the soil. The terminal part of the epicotyl is curved in order to reduce damage to plumule by friction from soil particles.

The plumule remains enclosed and protected by cotyledons till it comes out of the soil. There is no such provision

The cotyledons become green and function as the first leaves of the seedling. The cotyledons do not take part in photosynthesis.