Question

A student while observing an embryo of a pea seed in the laboratory listed various parts of the embryo as given below.
Testa, Tegmen, Radicle, Plumule, Micropyle, Cotyledon.
On examining the list, the teacher remarked that only three parts are correct. Select three correct parts from the list.
A. Testa, Radicle, Cotyledon
B. Tegmen, Radicle, Micropyle
C. Cotyledon, Plumule, Testa
D. Radicle, Cotyledon, Plumule

Answer 1

Hint:Pea is a dicot seed with a testa, embryonic axis, and cotyledons. The embryonic axis comprises plumule, hypocotyl, and radicle.

Complete answer:
A seed is an embryonic plant which is surrounded by a protective external cover. The seed formation is part of the seed plant reproduction process, the spermatophytes and the gymnosperm and angiosperm plants. Pisum sativum is typically the tiny spherical seed of the pod fruit. There are several peas in each pod which may be green or yellow. Pea pods are fruit from the botanical point of view as they contain seeds and grow from a floral ovary (pea). It also defines other edible seeds of Fabaceae, such as pigeon pea, cowpea and seeds of many Lathyrus species. The term also refers to Fabaceae seeds. P. sativum is a yearly plant with a one-year life cycle. It is a cold, seasonal crop cultivated in many parts of the world, and can be planted depending on the location between winter and early summer. The weight of the average pea is 0.1 to 0.36 gram. Immature peas (and the tender pod also in snow peas) are used as a vegetable or canned vegetable; varieties of the plant traditionally referred to as field peas are cultivated to produce dry peas, such as split pea shelled from a matured pod.

Pea is a dicot seed with a testa, embryonic axis, and cotyledons. The cotyledon, the plumule and the radicle are its embryo. Cotyledon is classified as the fleshly round structure on the embryonic axis containing reserve food content. The embryonic axis comprises plumule, hypocotyl, and radicle. The root is on the micropylar end of the embryonic axis while plumule is on the opposite end. Plant embryos are in an immature state and only contain the immature (radical) root, the immature shoot and the main part of the embryo cotyledon.

Thus, the correct answer is option D. i.e., Radicle, Cotyledon, Plumule.

Note:Pisum sativum is typically the tiny spherical seed of the pod fruit. There are several peas in each pod which may be green or yellow. Pea pods are fruit from the botanical point of view as they contain seeds and grow from a floral ovary (pea).