- Define Gemmule. An asexually created mass of cells, that are capable of developing into a brand-new organism or into associate adult fresh sponge is termed as a Gemmule.
- Structure of Gemmules. Structure of the gemmule is found in sponges, gemmules square measure internal buds (embryonic shoot), that plays a major role in reproduction.
- Formation of Gemmules. Gemmule is created by few genus of fresh sponges like Spongilla and a few marine species together with ficulina genus Ficus, ocean sponges, and different poriferans, that ...
- Gemmule formation in sponges. Gemmule formation occurs in an exceedingly fresh environment by many sponges like spongilla and a few water species like sea sponges, ficulina Ficus, and varied alternative ...
- Parts of Gemmule
- Characteristics of Gemmules. Gemmules are immune to evaporation, they're immune to desiccation due to weather, temperature, etc. ...
- Gemmule Reproduction Among Sponges. These internal buds show resistance towards physical change and dehydration. In fact, gemmules will even sleep in the absence of an element.
- Sample Questions
Full Answer
Is SpongeBob real marine sponge species?
The official SpongeBob Squarepants Instagram account also joined in on the fun and shared an image of the real-life creatures alongside their cartoon counterparts. "The sponge is [in] the genus Hertwigia and the sea star is [in] the genus Chondraster ," Mah said. The exact species is unclear, and they could even be brand new to science, he added.
What is the purpose of the gemmules?
gemmule
- (Zoology) zoology a cell or mass of cells produced asexually by sponges and developing into a new individual; bud
- (Botany) botany a small gemma
- (Biology) a small hereditary particle postulated by Darwin in his theory of pangenesis
Is a sponge a type of mollusk?
their collar cells are similar to a type of colonial protozoan that is thought to be the ancestor of sponges. Cnidarians Cnidaria is Latin for "stinging cells" all have radial symmetry more complex bodies than sponges (TWO CELL LAYERS) most have arm-like structures called tentacles
What is the function of the spicules in a sponge?
spicules also serve to funnel light inside the sponges. They do this by trapping light, as their low-temperature quality allows them to form more impurities which form the refractive index. These spicules also have built-in lenses, which gather and focus light in dark conditions.
What is a gemmules in sponges?
An asexually produced mass of cells, which are capable of developing into a new organism or into an adult freshwater sponge is termed as a Gemmule. They are small bud-like cells, which are formed by sponges to withstand unfavourable environmental conditions.
How do gemmules help sponges?
These so-called “gemmules” are expelled from the adult sponge and, in some marine species, serve as a normal reproductive process or, sometimes, as a means to carry the sponges over periods of unfavourable conditions when the adults degenerate; e.g., drought, temperature extremes.
How are gemmules formed in sponges?
Gemmule Formation in Sponges Archaeocytes or totipotent cells are filled with food material in the form of lipoprotein or glycoprotein amalgamate to become a mass.
What are gemmules give example?
Gemmules are internal buds found in sponges and are involved in asexual reproduction. e.g. Spongilla . These are formed during unfavourable conditions and help in perennation and dispersal.
What is the function of gemmules?
Gemmules are internal buds found in sponges and are involved in asexual reproduction. It is an asexually reproduced mass of cells, that is capable of developing into a new organism i.e., an adult sponge.
How are gemmules relevant to the evolution of freshwater sponges?
1). The gemmules therefore allowed both the colonization of sponges in continental waters and overland migration via carriers (Fig. 2).
What are gemmules and conidia?
Gemmule - asexual reproductive structure in sponges. Conidia - asexual reproductive structure in Penicillium.
What cells are found in gemmules of sponges?
So, the correct answer is 'Archaeocytes'.
Are gemmules spores?
Gemmules are the specialized asexual spores formed in sponges. It gives rise to a new individual. Zoospores are endogenous spores while conidia are exogenous spores.
What are gemmules name one organism in which these are formed?
Gemmules are the internal buds which consist of a small group of cells that are enclosed by a protective coating. These are formed within the body of freshwater sponges and few marine sponges.
Which phylum has characteristics of gemmules?
Solution : Gemmules formation is the characteristic feature of water sponges ....QuestionChapter NameAnimalia -I (Lower Invertebrates)SubjectBiology (more Questions)Class12thType of AnswerVideo & Image4 more rows•Apr 17, 2022
Where are Archaeocytes found?
spongesArchaeocytes or amoebocytes are found in sponges.
1. What are the Properties of Spicules of Sponges?
The structures that serve the purpose of a skeleton in sponges are known as spicules. Naturally, spicules can be siliceous or calcareous. Plus, the...
2. Which Organisms favours the Process of Budding?
A type of asexual reproduction where a new organism gets produced due to cell division. In yeast cells, the small bulb-like projection is called th...
3. Why are many Sponges Green in Colour?
The reason behind the green colour of sponges is that symbiotic bacteria, plantlike protists, and algae are present in them.
4. What is the Triggering Factor for Sponges to Produce Gemmules?
Gemmules are produced because of certain environmental factors like desiccation or low temperatures. The parent body breaks down to give out gemmul...
5. How can I get to understand the Gemmules chapter?
Students need to read the chapter in the textbook or download it from the website of Vedantu. Listen to the teacher while they teach the topic beca...
6. How to revise Biology with the help of Vedantu?
Vedantu helps students with every step of their studies. It has notes related to any chapters in a very simple manner. Every chapter has different...
7. Are the notes of Gemmules in Vedantu enough for the exam point of view?
Vedantu always understands the necessity of updated notes for the students. The notes are written according to the syllabus and important topics ar...
8. Is Gemmules a hard chapter in Biology?
Students should study the chapters which are important. The chapter Gemmules is an easy chapter. The trick to understanding is to first clear the c...
9. Can I take online classes in biology in Vedantu?
Vedantu has provided an option for online tutoring for the students who are interested. A student can always enrol in Vedantu Pro to enjoy the bene...