题目Fruits that develop from ovaries that have unfertilized eggs are called A. carpels(心皮). B. parthenocarpic. C. epigynous.(.(花被,雄蕊等)上位的) D. inferior.(下位的) 相关知识点: 试题来源: 解析 B.parthenocarpic.反馈 收藏 ...
According to paragraph 1, floral nectar and extrafloral nectar are alike in that A. they are likely to be produced by the same plants B. they basically consist of the same chemical components C. they attract only insects that will defend the plant D. they are produced by the same parts ...
Beardmore, Dobzhansky and Pavlovsky (1960) and Battaglia and Smith (1962) showed that, in experimental population cages, the polymorphic populations produced more individuals, and a greater biomass, than did the monomorphic ones given the same amounts of food. Moreover, the polymorphic populations ...
Females that were both fed and mated fell into two categories: 44% produced mature eggs at a mean rate of 6.4 eggs/female, while 56% had ovaries similar to those of fed but unmated females. We conclude that there is a two-stage process of egg development in adult female O. pumilio, ...
Caterpillars devour the ovaries, where the seeds are produced, and seed beetle larvae eat seeds as they burrow in developing fruits.Extrafloral nectaries at the base of each sepal attract several kinds of insects, but 96 percent of them are ants, several different species of them. When buds ...
To reveal the timing of primordial follicle loss and how it is associated with diminished ovarian function, we quantified the number of follicles at different stages of folliculogenesis in the ovaries of mice at ages of 1 month, 2 months, 6 months, 9 months, 12 months, and 18 months. Folli...
The hormone progesterone is released by which structure in the female reproductive system? a. Anterior pituitary b. Corpus luteum c. Hypothalamus d. The adrenal glands What hormone causes ovulation in females? Which hormones are produced in the anterior pituitary gland? Where are produced the ADH ...
An ovary releases an egg every month. When two babies are produced in succession, they are called twins. Generally, twins are produced from a single egg by the separation of early blastomeres resulting from the first zygotic cleavage. As a result, the yo
Name the cells that are produced by the testes and ovaries. What are the major sex hormones in males and females? What are the glands of the male and female reproductive systems that secrete hormones? What are the names of the hormones they secrete? (Specify which is male and which is ...
IVF is a method of assisted reproduction that involves removing eggs from the ovaries and fertilizing them with sperm outside the body. The resulting embryos are then typically placed in a person’s uterus in hopes they spur a successful pregnancy. ...