Question

Функції сперматозоїдів у гідри? Функції яйцеклітин у гідри?Функції скоротливого волоконця у гідри?​

Answer 1

Ответ:

1)размножение

2)размножение

3)За счёт мускульных волоконец, лежащих в основании каждой клетки, тело гидры может сокращаться, удлиняться и изгибаться.

Answer 2

Ответ:

1.донести набор хромосом до женской яйцеклетки и зародить новую жизнь.
2.Сливаясь со сперматозоидом, образует и обеспечивает развитие зиготы, из которой формируется эмбрион
3.пищеварительная вакуоля выполняет функцию переваривания и усвоения пищи клеткой.

Объяснение:

Answer 3

Functions of Spermatozoa in Hydra

Spermatozoa are male reproductive cells, or gametes, that play a crucial role in sexual reproduction. In the case of Hydra, a freshwater organism, the functions of spermatozoa include:

1. Fertilization: The primary function of spermatozoa is to fertilize the eggs of the female Hydra. During sexual reproduction, spermatozoa are released into the water, where they swim towards the female Hydra to reach the eggs. Once a spermatozoon successfully fertilizes an egg, it initiates the development of a new individual [[1]].

Functions of Oocytes (Egg Cells) in Hydra

Oocytes, or egg cells, are the female reproductive cells in Hydra. They have several important functions, including:

1. Reproduction: The primary function of oocytes is to produce offspring through sexual reproduction. In Hydra, oocytes are fertilized by spermatozoa to initiate the development of new individuals [[1]].

2. Nourishment: Oocytes in Hydra contain yolk, a nutrient-rich substance that provides nourishment to the developing embryo. The yolk supplies essential nutrients and energy for the early stages of embryonic development until the embryo becomes capable of feeding on its own [[2]].

Functions of Contractile Fibers in Hydra

Contractile fibers, also known as muscle fibers or myofibrils, are specialized structures responsible for muscle contraction. In Hydra, which belongs to the phylum Cnidaria, contractile fibers have several functions, including:

1. Movement: Contractile fibers enable Hydra to move and change its body shape. These fibers are arranged in a circular and longitudinal pattern, allowing Hydra to contract and extend its body in different directions. This movement helps Hydra capture prey, avoid predators, and navigate its environment [[3]].

2. Feeding: Contractile fibers play a role in the feeding process of Hydra. When Hydra captures prey, the contractile fibers contract to close the tentacles around the prey and bring it closer to the mouth for ingestion [[4]].

3. Defense: Contractile fibers also aid in the defense mechanism of Hydra. When threatened, Hydra can contract its body rapidly, retracting its tentacles and minimizing its exposure to potential harm [[5]].

It's important to note that while these functions are generally observed in Hydra, there may be variations or additional functions depending on the specific species or circumstances.