What kind of cells do hydras have?

Hydra contains epithelial cells as well as a multipotent interstitial cell (I-cell) that gives rise to nematocytes, nerve cells, gland cells, and germ-line cells.

What is the function of gastrodermis in Hydra?

Note:- Gastrodermis is derived from the endoderm. Its main functions are secretion, digestion, and sensory. Therefore, it has the digestive cells, interstitial cells, and gland cells.

What kind of cells comprise the gastrodermis?

2.7 Coelenterates The gastric cavity communicates with the external environment through a single opening and is lined by an endodermal epithelial layer, or gastrodermis, composed mainly of epitheliomuscular cells, and also gland cells that secrete digestive enzymes and mucous-secreting cells.

What are the two main cell layers of the Hydra body?

Hydra consists of two cell layers named ectoderm and endoderm, separated by an acellular layer named mesoglea.

What is nutrition in Hydra?

Note:In hydra, holozoic mode of nutrition is seen. Holozoic nutrition involves ingestion of food which is either solid or liquid. They are also heterotrophic in nature, i.e. they cannot produce their own food.

What makes hydras different than other cnidarians?

Because the hydra does not have a separate opening for waste, any material that cannot be digested is regurgitated out of its mouth. Cnidarians do not have a head or a brain or other organs that we find familiar to animals. It is amazing that they can live, eat, and respond to their environment.

What is the function of nutritive muscular cells?

Nutritive-muscular cells, type of gastrodermal cell, are able to phagocytize partially digested food, which are then given to vacuoles, completing digestion. Nutritive-muscular cells have circularly oriented contractile fibers that aid in moving materials in and out the gastrovascular cavity.

What is Hypostome in hydra?

Hypostome is the apex of the mouth which is present in hydra. Explanation: The oral cavity of hydra is primitive. As a result of this there is developed of hypostome in the body cavity of the hydra.

Which of the following cell is present in Gastrodermal cell in Hydra?

Complete answer: In the inner gastrodermis layer of Hydra, nutritive muscular cells, gland cells, nerve cells, sensory cells, and interstitial cells are present.

What body plan does the Hydra possess?

Hydra has a tubular, radially symmetric body up to 10 mm (0.39 in) long when extended, secured by a simple adhesive foot known as the basal disc.

How does nutrition take place in hydra?

the Hydra is an organism which has heterotrophic mode of nutrition because chlorophyll which are required for the production of their own food by the process of photosynthesis. Explanation: the Hydra has small projections from the body which are known as tentacles.

Do hydras have autotrophic nutrition?

Both amoebas and hydras are classified as heterotrophs. This means that both types of organisms consume organic material and other, smaller organisms…

What is the function of glandulo-muscular cells in Hydra?

In Hydra, the pedal disc is thickly populated (beset) with glandulo-muscular cells, and they have muscular basal extensions (Fig. 20.3H). In the gastro dermis, they secrete digestive ferments. b. Sensory cells:

What is extracellular digestion in Hydra?

Digestive enzymes now act upon the small chunks of food in the cavity of a hydra. This type of digestion, which occurs in the cavity outside the gastrodermis cells, is called extracellular digestion. The disintegrated smaller chunks of food are now engulfed by nutritive-muscle cells by means of pseudopodia.

Where are nerve cells found in a Hydra?

Nerve cells are found in large numbers around the mouth of the hydra. Hydra does not possess a blood and circulatory system. Instead, the water enters into their body and carries away the waste. 8. Reproduction in Hydra

What is the structure of Hydra?

Structure of Hydra 2. Body Wall of Hydra 3. Cell Elements 4. Locomotion 5. Nutrition 6. Respiration and Excretion 7. Nervous System 8. Reproduction 9. Regeneration. 1. Structure of Hydra: Hydra belongs to the class Hydrozoa, Phylum cnidaria.