HORTICULTURE

Detailed explanation-1: -As different as they may be from each other, all seeds are alike in three ways: in every seed there is an embryo (EM-bri-o) or baby plant; each seed contains some kind of food for the young plant; and every seed has a protective covering around the young plant and its food.

Detailed explanation-2: -All seeds need water, oxygen and the right temperature to germinate. Dormancy is a state of suspended animation in which seeds delay germination until conditions are right for survival and growth. Some Australian plants need fire or smoke to germinate, while others rely on insects and animals.

Detailed explanation-3: -The number of cotyledons (seed leaves) distinguishes whether a seed is a monocot or dicot. Monocots have one cotyledon and dicots have two.

Detailed explanation-4: -(a) In every seed, Cotyledons are present. These are produced with the endosperm within the seed. These are plants categorised on the basis of the presence of cotyledons.