Question

1.Пестик состоит рыльца, столбика, пыльника завязи, столбика, рыльца пыльника, тычиночной нити завязи, пыльника, столбика 2.Цветки, содержащие и пестик и тычинки, называют: однодомные двудомные обоеполые раздельнополые 3.Обоеполые цветки у вишни и сливы тыквы и огурца орешника и ивы тополя и яблони 4.Пыльца образуется в чашечке венчике тычинках пестике 5.Двудомное растение - это береза сосна дуб тополь 6.К однодомным растениям относят лещина ива кукуруза ель 7.Цветку гвоздики красную окраску придает чашечка венчик тычинки пестик 8.Тычинка - это женский орган мужской орган 9.Простой околоцветник у тюльпана ландыша нарцис гвоздика роза горох 10.Двойной околоцветник у картофеля лилии тюльпана томата вишня пшеница 11.Пестичные цветки могут быть у вишня огурец капуста томат 12.Срастание лепестков имеется табака и незабудки яблони и вишни розы и одуванчика лилия и георгин 13.Главные части цветка чашелистики и пестик венчик и тычинки пестик и тычинки околоцветник и цветоложе 14.Двойной околоцветник имеет чашечку и цветоложе венчик и тычинки чашечку и венчик пестик и тычинки 15.Семязачаток располагается в пыльнике тычинки завязи пестика рыльце пестика столбике пестика . Этот вариантами ответов!

Answer 1

2 обоеполые
14 двойной околоцветник имеет чашечку и венчик
13 околоцветник и цветоложе
8 это мужской орган
7 венчик
4 в тычинках

Answer 2

Structure of a Flower

The structure of a flower consists of several parts, including the pistil, stamen, petals, sepals, and receptacle. Here is a breakdown of the different parts:

1. Pistil: The pistil is the female reproductive organ of a flower and is composed of three main parts: the stigma, style, and ovary. The stigma is the sticky top part of the pistil that receives pollen. The style is a long tube-like structure that connects the stigma to the ovary. The ovary contains the ovules, which develop into seeds after fertilization. 2. Stamen: The stamen is the male reproductive organ of a flower and consists of two main parts: the filament and the anther. The filament is a slender stalk that supports the anther. The anther is the part of the stamen that produces and releases pollen. 3. Petals: Petals are the colorful, often leaf-like structures that surround the reproductive organs of a flower. They are usually brightly colored to attract pollinators. 4. Sepals: Sepals are the outermost part of a flower and are usually green in color. They protect the flower bud before it opens and support the petals. 5. Receptacle: The receptacle is the base of the flower where all the other parts are attached.

Types of Flowers Based on Reproductive Organs

Flowers can be classified into different types based on the presence or absence of both male and female reproductive organs. Here are the different types:

1. Monoecious (One House): Monoecious flowers have separate male and female reproductive organs on the same plant. Examples of monoecious plants include corn, hazelnut, and oak trees. 2. Dioecious (Two Houses): Dioecious flowers have separate male and female reproductive organs on different plants. Examples of dioecious plants include willow, asparagus, and holly. 3. Perfect (Bisexual): Perfect flowers have both male and female reproductive organs in the same flower. Examples of perfect flowers include roses, lilies, and sunflowers. 4. Imperfect (Unisexual): Imperfect flowers have either male or female reproductive organs in separate flowers. Examples of imperfect flowers include cucumber, watermelon, and squash.

Examples of Flowers and Their Characteristics

Let's look at some examples of flowers and their characteristics:

1. Cherry: Cherry flowers are perfect, meaning they have both male and female reproductive organs in the same flower. They are also considered to be monoecious because they have separate male and female flowers on the same plant. 2. Carnation: The red color of carnation flowers is primarily due to the petals, sepals, stamens, and pistils. 3. Tulip: Tulip flowers have a simple perianth, which consists of six tepals (three sepals and three petals). They have a perfect flower structure. 4. Potato: Potato flowers have a double perianth, which means they have an additional layer of petals. They also have stamens and pistils. 5. Apple: Apple flowers have fused petals and sepals, which is known as connation. They also have stamens and pistils. 6. Rose: Rose flowers have fused petals and sepals, as well as stamens and pistils. They also have a double perianth. 7. Daisy: Daisy flowers have a simple perianth and stamens and pistils.

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The Role of Pollen in Flower Reproduction

Pollen plays a crucial role in flower reproduction. It is produced in the anther, which is part of the stamen. The pollen grains contain the male gametes (sperm cells) that are necessary for fertilization. When a pollinator, such as a bee or butterfly, lands on a flower, the pollen sticks to its body. As the pollinator moves from flower to flower, it transfers the pollen to the stigma of other flowers, allowing for pollination and fertilization to occur. The pollen then travels down the style to reach the ovules in the ovary, where fertilization takes place.

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The Location of the Embryo Sac in a Flower

The embryo sac, which contains the female gametes (egg cells), is located within the ovary of a flower. Specifically, it is found within the ovule, which is housed within the ovary. The ovary is part of the pistil, the female reproductive organ of a flower. After fertilization, the embryo sac develops into the embryo, which eventually becomes the seed.

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