Question

Что такое пестик? что такое двойное оплодотворение?что такое фитоценоз? что такое фитопланктон? ПОДСКЖИТЕЕЕЕЕЕЕЕ!!!

Answer 1

Пестик- это женская часть цветка.
Двойное оплодотворение- это половой процесс у покрытосеменных растений, при котором оплодотворяются как яйцеклетка, так и центральная клетка зародышевого мешка.
Фитоценоз- это растительное сообщество, существующее в пределах одного биотопа.
Фитопланктон- это часть планктона, которая может осуществлять процесс фотосинтеза.

Answer 2

What is a Pistil?

A pistil is the female reproductive part of a flower, typically consisting of three parts: the stigma, style, and ovary. The stigma is the sticky surface at the top of the pistil that receives pollen, the style is the tube-like structure that connects the stigma to the ovary, and the ovary contains the ovules, which develop into seeds after fertilization. The pistil is a crucial part of the flower's reproductive system, playing a key role in the process of pollination and fertilization.

What is Double Fertilization?

Double fertilization is a process unique to flowering plants (angiosperms) where two sperm cells fertilize two different structures within the ovule. One sperm cell fertilizes the egg cell, forming the zygote, which develops into the embryo. The other sperm cell combines with two polar nuclei to form the endosperm, a nutrient-rich tissue that nourishes the developing embryo. This process is a defining characteristic of angiosperms and is essential for their reproductive success.

What is a Phytocenosis?

A phytocenosis refers to a community of plants that are interrelated and interact with each other within a specific area or habitat. It encompasses the various plant species, their interactions, and the environmental factors that influence their growth and distribution. Phytocenoses are an important aspect of ecological studies, as they provide insights into the dynamics of plant communities and their relationships with the surrounding environment.

What is Phytoplankton?

Phytoplankton are microscopic, photosynthetic organisms that drift in the upper, sunlit layers of bodies of water, such as oceans, seas, and freshwater systems. They form the foundation of the aquatic food web, serving as primary producers and providing food for a wide range of marine organisms. Phytoplankton play a crucial role in global carbon cycling and oxygen production, making them essential for the health of marine ecosystems and the planet as a whole