C. To protect the embryo inside. D. To help the seed float in the air. 相关知识点: 试题来源: 解析 C。解析:种子的种皮的作用是保护内部的胚。选项A,胚乳是为发育中的胚提供食物的,不是种皮,A错误。选项B,种皮不能直接参与光合作用,B错误。选项D,种皮没有帮助种子在空中漂浮的作用,D错误。
the pigmentation of the seed coat的中文意思沪江词库精选the pigmentation of the seed coat是什么意思、英语单词推荐 种皮的色素 相似短语 the pigmentation of the seed coat 种皮的色素 seed coat 种皮 entire seed coat 整个种皮 leaving the seed coat 留下种皮 break in the seed coat 破种皮 ...
seed coat- protective outer layer of seeds of flowering plants episperm,testa reproductive structure- the parts of a plant involved in its reproduction seed- a mature fertilized plant ovule consisting of an embryo and its food source and having a protective coat or testa ...
A seed is covered by a hard shell called the ___. A. seed coat B. seed pod C. seedling D. germ 相关知识点: 试题来源: 解析 A。种子被一层硬壳覆盖,叫做种皮。选项 B“seed pod”是豆荚;选项 C“seedling”是幼苗;选项 D“germ”是胚芽,所以答案是 A。反馈 收藏 ...
maculatus for a particular seed coat colour was determined using four different colour types of bambara groundnut in an arena. The olfactory attractiveness of testa against cotyledon and cotyledon against whole grain was carried out in an olfactometer. Oviposition preference of C. maculatus on the ...
The root grows down into the soil(土壤) through the seed coat. The stem and the leaves come out of the ground. As they get out of the ground, the stem and the leaves grow towards sunlight. Leaves make the plant's food and the plant grows. Gradually, flowers form(形成) on the ...
An important function of the seed coat is to deliver nutrients to the embryo. To relate this function to anatomical characteristics, the developing seed coat of pea (Pisum sativum L.) was examined by light- and cryo-scanning electron microscopy (cryo-SEM) from the late pre-storage phase until...
seed coat. endosperm. All of the above. 5. The roots of a new plant take in sunlight. minerals and water. fruit. None of the above. 6. The leaves of a plant make air. food. nitrogen. All of the above. 7. When the plant is an adult, it will develop ...
The most common color of soybean seed coat is ().A.YellowB.GreenC.BlackD.Purple
Pollination When the insect visits another flower of the same type, the pollen will stick to the pistal. Fertilization The pollen travels to the ovary, where it joins with an ovule. Seeds Seeds: the fertilized egg Seed Structure: consists of a seed coat, a young plant, and stored food ...