What is the meaning of Mesolecithal?

What is the meaning of Mesolecithal?

mesolecithal Applied to an egg that has a yolk of intermediate size and strongly concentrated in one hemisphere, typical of Petromyzonidae, Acipenseridae, Amiidae, Lepidosirenidae, and Amphibia. Compare MACROLECITHAL; OLIGOLECITHAL. See also ISOLECITHAL; TELOLECITHAL. A Dictionary of Zoology. “mesolecithal .”

What is Macrolecithal?

macrolecithal Applied to an egg that has a large yolk, typical of Myxinidae, Elasmobranchii, Teleostei, Chelonia, Sauria, Serpentes, Crocodilia, Aves, and Monotremata. Compare MESOLECITHAL; OLIGOLECITHAL. See also ISOLECITHAL; TELOLECITHAL. A Dictionary of Zoology. “macrolecithal .”

What is Megalecithal?

of an egg. : containing very large amounts of yolk.

What is the dictionary of a word called?

The denotation of a word or phrase is its explicit or direct meaning.

What is isolecithal egg?

From Wikipedia, the free encyclopedia. Isolecithal (Greek iso = equal, lekithos = yolk) refers to the even distribution of yolk in the cytoplasm of ova of mammals and other vertebrates, notably fishes of the families Petromyzontidae, Amiidae, and Lepisosteidae.

What is Holoblastic?

: characterized by complete cleavage that divides the whole egg into distinct and separate blastomeres — compare meroblastic.

Is human egg Isolecithal?

The human ovum consists of protoplasm that contains some yolk, enclosed by a cell wall consisting of two layers, an outer one (zona pellucida) and an inner, thin one (vitelline membrane). isolecithal ovum one with a small amount of yolk evenly distributed throughout the cytoplasm.

Is human egg Polylecithal?

– Telolecithal Egg: In eggs containing moderate or large quantities of yolk, the distribution of yolk isn’t uniform. lt is concentrated more towards the vegetal pole. Such a kind of egg, during which the yolk is concentrated towards one pole, is named telolecithal egg. So, the correct answer is, ‘(a) Alecithal.

Is amphioxus a telolecithal?

Isolecithal or Homolecithal Egg: In isolecithal eggs, the very little amount of yolk present is uniformly distributed throughout the ooplasm (eg. echinoderms, Amphioxus, mammals). Such a type of egg, in which the yolk is concentrated towards one pole, is called telolecithal egg.

What is a dictionary word password?

A dictionary attack is a method of breaking into a password-protected computer, network or other IT resource by systematically entering every word in a dictionary as a password. A dictionary attack can also be used in an attempt to find the key necessary to decrypt an encrypted message or document.

Who puts words in dictionary?

Our lexicographers, the people who write and edit the dictionary, are constantly adding new words to the dictionary and updating the senses of existing ones. For a word to get into the dictionary, two main things must happen: It has to be in widespread use among a group of people.

Is human egg Centrolecithal?

Option A: The yolk concentrated in the centre of the egg with cytoplasm surrounding it is called Centrolecithal. Option B: Egg without yolk is called Alecithal. Ex, human egg. Therefore, this is the correct option.