Question

In hypogeal germination, the active region is

• A. Hypocotyl
• B. Epicotyl
• C. Radicle
• D. Tigellum

Answer 1

The correct option is B Epicotyl

In hypogeal germination, cotyledons remain underground and plumule is elongated above the ground.
Hypocotyl is part of the stem situated below the cotyledons. If hypocotyl is the active region, then it will elongate and will bring cotyledons above the ground. But, as stated above cotyledons remain underground.
Radicle gives rise to primary root during germination process.
Tigellum is the main axis of embryo which protrudes out of the cotyledons and forms radicle and plumule during germination process.
Epicotyl is part of the stem above cotyledons. During germination process, epicotyl being the active region elongates and pushes plumule above the ground and cotyledons remain underground.
Thus, the correct answer is option B.