Question

Epigeal germination occurs in
A. Pea
B. Gram
C. Caster
D. Maize

Answer 1

Hint: Germination is a process in which a baby plant that is present inside the seed starts growing under a suitable condition. Epigeal is a type of germination in which hypocotyl is elongated.

Complete answer:
In epigeal germination, the cotyledons are pushed above the ground and then germination takes place above the ground. The cotyledons are pushed upwards due to the elongation hypocotyl. The hypocotyl lies between the radicle and cotyledons. Opposite to this, there is another type of germination and hypogeal germination. In this germination, the cotyledon germinates below the ground. The portion of hypocotyl does not elongate. Instead of hypocotyl the epicotyl elongates. The epicotyl lies between the cotyledon and plumule or we can say the portion above the cotyledons. Therefore it does not allow the cotyledon to push upwards. Hypogeal germination can be seen in plants like coconuts, pea, maize, etc whereas the epigeal are seen in bean or caster plants.

Therefore the correct answer is option C that is a caster.

Additional information: Epicotyl and hypocotyl are the embryonic axes. The epicotyl develops into the leaves in most of the plants. However, the hypocotyl turns into the stem of the plants.

Note: The hypocotyl grows faster in case of epigeal germination. The upper part of the hypocotyl curved down to protect the plumule. In epigeal germination, the cotyledons are also the source of energy as it undergoes the photosynthesis process. The hypocotyl terminates at the radicals. In the case of hypogeal the energy comes from the endosperm as cotyledon does not undergo photosynthesis.