Sexual Reproduction in Flowering Plants Test - 74

The seed which store food materials in endosperm are called endospermic or albuminous seed.

Double fertilization in angiosperms triggers the transformation of ovule into a seed. The zygote delvelops into an embryo. In double fertilization, one male gamete fuses with the egg to form the diploid zygote, the other male gamete fuses with the two polar nuclei to form the triploid primary endosperm nucleus.

The germ of a cereal is the reproductive part that germinates to grow into a plant, it is the embryo of the seed. Cereal grains and their components, such as wheat germ oil, rice bran oil, and maize, may be used as a source from which vegetable oil is extracted, or used directly as a food ingredient. So, the correct answer is 'Embryo'.

Endospermic seeds are those that have an endosperm in the mature seed. It is fleshy, oily, surrounds the embryo, and functions as the sole food storage organ. Inside the seed coat, a thin and papery cotyledon is present. Monocot plants have endospermic seeds. So, the correct answer is ‘Papery’.

The seed which store food material in cotyledons are called exalbuminous seed.

The shoot tip remains protected by two small, folded leaves. The portion of embryo axis between the plumule and cotyledonary node is called epicotyl. The portion of axis between the radicle and cotyledonary node is called hypocotyl. Both epicotyl and hypocotyl elongate rapidly when seed germinate.

Seeds, which store food materials in their cotyledons are called non- endospermic or exalbuminous seeds.(e.g., gram, pea, bean, almond, groundnut, mustard, sunflower).

Seeds, which store food materials in their endosperm are called endospermic or albuminous seeds. (e.g., castor, maize, wheat, barley, grasses, rice).

Vallisneria is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis.  It has a non albuminous seed.

So, the correct answer is 'Vallisneria'.

A. Outer seed coat which ensures survival of seeds called testa.

Seeds, which store food materials in their cotyledons are called non- endospermic or exalbuminous seeds.(e.g., Gram, Pea, Bean, Almond, Groundnut).

Seeds, which store food materials in their endosperm are called endospermic or albuminous seeds. (e.g., Castor, Maize, Wheat, Barley, Grasses).

(a) Maize- endospermic

(b) Mustard- Non- endospermic

(c) Pea- Non endospermic.

So, the correct answer is'a-d, b-e, c-e'.

A. Funiculus- It is the stalk-like structure that attaches the ovule to the placenta.