Difference Between Sponge and Hydra

Thekey difference在海绵和九头蛇之间sponges are primitive multicellular animals belonging to phylumPoriferathat show cellular level organization while hydra is a multicellular animal belonging to phylumCoelenterate这显示了组织级的组织。

王国Animalia是由多细胞真核动物组成的最大王国。可以将动物分为主要的门，例如Porifera，Coelenterata，Platyhelminthes，Aschelminthes，Annelida，Annelida，Arthropoda，Mollusca，Mollusca，echinodermata和Chordata。海绵是门孔的成员。它们是显示细胞水平组织的简单多细胞动物。他们没有组织。Hydra是显示组织级组织的门腔的成员。

内容

1.Overview and Key Difference
2.什么是海绵
3.什么是九头蛇
4.Similarities Between Sponge and Hydra
5.Side by Side Comparison – Sponge vs Hydra in Tabular Form
6。概括

什么是海绵?

Sponges are primitive multicellular animals of kingdom Porifera. They are无脊椎动物that have a cellular level organization. They show minimal differentiation and don’t have true tissues. Moreover, they don’t have internal organs. Sponges are non-motile and often found attached to a solid surface. They are marine organisms. Moreover, they are asymmetrical organisms. There are four different classes of sponges as Calcarea, Demospongiae, Scleropongiae and Hexactinellida.

These organisms have a central canal and water enters from one side and leaves from the other side. They obtain nutrients and oxygen through the water flow. Therefore, they are filter feeders. They eat tiny, floating organic particles and浮游生物from the water flow. Furthermore, waste removal also takes place through the water flow in sponges.

Sponges have different colours and shapes. They may reproduce sexually (by the formation of gametes) and asexually (by fragmentation). Most importantly, most sponges are hermaphrodites, having both male and female reproductive parts.

什么是九头蛇?

Hydra是属于门肠杆菌的多细胞淡水动物的属。它们属于氢氮族。由于其特殊的再生能力，Hydra也称为息肉。九头蛇是一种棘手动物，通常被发现附着在固体表面或淹没的植被上。九头蛇的身体是圆柱/管状的形状，径向对称。

Hydra is carnivorous. It eats small insects, insect larvae and small crustaceans. Moreover, hydra reproduces sexually as well as asexually. Budding is the asexual form of reproduction while the development of temporary structures called gonads takes place during sexual reproduction. Most hydra species are dioecious while some species are monoecious or hermaphrodite.

What are the Similarities Between Sponge and Hydra?

• 海绵和九头蛇属于王国动物。
• They are invertebrates.
• Moreover, they are aquatic, multicellular organisms.
• They reproduce sexually as well as asexually.
• 海绵和九头蛇都是无柄的，并且保持在固体物体上。

What is the Difference Between Sponge and Hydra?

Sponge is a primitive multicellular animal that belongs to phylum Porifera while hydra is the multicellular freshwater animal that belongs to phylum cnidaria. So, this is the key difference between sponge and hydra. Besides, sponge shows cellular-level organization while hydra shows tissue-level organization.

Moreover, sponges are mostly asymmetrical, while hydra is radially symmetrical. Also, most sponges are marine animals, while few species are freshwater organisms. On the other hand, hydra is a freshwater organism. Furthermore, another difference between sponge and hydra is the nutrition. Sponges eat tiny, floating organic particles and plankton from the water the flows. In contrast, hydra is carnivorous. It feeds on small insects, insect larvae and small crustaceans.

你可以找到更多的细节从下面infographic of difference between sponge and hydra.

概括– Sponge vs Hydra

Sponge and hydra are two types of aquatic animals which are multicellular eukaryotes. Sponges are primitive animals which have cellular-level organization. In contrast, hydra is an animal that has a tissue-level organization. Moreover, sponge belongs to phylum Porifera while hydra belongs to phylum cnidaria. Furthermore, sponges are asymmetrical while hydra is radially symmetrical. Thus, this summarizes the difference between sponge and hydra.

Reference

1.“九头蛇：历史，栖息地和运动（图）。”生物学讨论, 2 May 2016,Available here.

2. “Classification of Animal Kingdom (Animalia).” PMF IAS, 12 July 2016,Available here.

Image Courtesy:

1. “A Guantanamo sponge -a” By Timothy W. Brown – (Public Domain) viaCommons Wikimedia
2. Flatters＆Co。的“ Hydra-Foto”（照片） - 原始资料来源：宇宙的奇迹。一项流行的作品，介绍了天堂，地球，植物生命，动物生命，强大的深处的著作。由Avebury勋爵（Lord Avebury）发表在1911 - 1912年伦敦2卷中，由领先的专家等贡献。第264页[1]。（公共领域）通过Commons Wikimedia