Regeneration in hydra, Biology

Assignment Help:

Regeneration in Hydra

You previously know that the Hydra has spectacular regenerative ability. The hydra is a small tubular, two layered fresh water animal computing 20mm in length. Structurally the Hydra has a head or hypostome at the top end, containing a mouth, surrounded by a ring of about six large tentacles that bear a number of stinging cells called cnidoblasts. Towards the posterior end, the hydra has a stalk or peduncle ending in a broad base known as pedal or basal disc or foot. The creature joints itself to the substratum by means of the pedal disc. Close to the base is the budding region from where the asexual buds arise. The stomach or gastric region in which most of the digestion occurs is located between the hypostome and the budding region. The body wall of the Hydra contains two concentric epithelial layers

1649_Regeneration in Hydra.png

Figure: Anatomy of Hydra

a) Gastrodermis derived from the endoderm (internal layer), surrounding a central gastric cavity. The epidermis and gastrodermis are separated by an acellular matrix called mesogle.

b) Epidermis derived from the ectoderm (external layer).


Related Discussions:- Regeneration in hydra

Ancillary and sanitary accomodation, Ancillary Accomodation: Ward Kit...

Ancillary Accomodation: Ward KitchenIPantry:  It should have large sink and drain board along with fly proof door. If  the food is received from central kitchen and tray pre

Define morphallaxis, a) Describe with the help of a suitable example for ea...

a) Describe with the help of a suitable example for each of the following terms : (i) morphallaxis (ii) epimorphosis and (iii) compensatory regeneration.

Which are specialized conductive tissues of the plants, Which are specializ...

Which are specialized conductive tissues of the plants? Vascular tissues of the plants are the phloem and the xylem. The Xylem is the plant tissue that forms the vessels that c

Excretion in animal, Excretio n I n  Animal To give out nitrogenous...

Excretio n I n  Animal To give out nitrogenous waste products after oxidation of food is excretion. EXCRE T O R Y MATERIALS - 1 .      AMMONIA - Animals are

Differences among nematodes and annelids, What are the morphological simila...

What are the morphological similarities and differences among nematodes and annelids? Nematodes, like annelids, have a cylindrical elongated body. Annelids differentiate from

Do plants placed under an environment drier than the habitat, Do plants pla...

Do plants placed under an environment drier than the habitat where they are used to living have a reduction or an increase in the time during which their stomata remain open? I

Bluetongue, Bluetongue Bluetongue (BT), a viral disease, transmitted by...

Bluetongue Bluetongue (BT), a viral disease, transmitted by Culicoides midges, is an infectious, non-contagious disease of ruminants including sheep, goat and cattle, is charac

Diagnostic evaluation of leukemia, Diagnostic Evaluation   A  study of ...

Diagnostic Evaluation   A  study of complete blood count (CBC) and blood chemistry mainly uric acid levels, is necessary for dignostic evaluation.  Radiologic  studies  are

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd