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Q. What are the cnidocytes? What is the name of the capsule inside the cnidocyte? What are the biological functions of this structure?
Cnidocytes are specific cells present in coelenterates. They are found in the epidermis and contain toxic substances that can paralyze, hurt or even kill other animals.
Each cnidocyte has an inner capsule know as nematocyst where the actual urticating substance is stored. When a cnidocyte is excited it causes the nematocyst to expose a filament contains the toxic chemical.
Cnidocytes and their nematocysts have the biological functions of defending the individual from external aggression also of helping to capture their prey.
Q. What is Deoxynivalenol? Deoxynivalenol (DON) is a far more common, but much less toxic, trichothecene and is produced by species such as F. graminearum and F. culmorum. LD
Indicating the name and respective ploidy of each involved cell how can the formation of sperm cells from germ cells be described? The formation of sperm cells, or spermatogene
Fungi are classified in their own kingdom. Into which phyla is the fungi kingdom divided? Into which of those phyla are mushrooms classified? The kingdom fungi is separated in
How are secondary cell walls different from primary cell walls? Primary cell walls are assembled on the surface of the plasma membrane whereas the cell is growing. They can gro
Q. What is the life cycle type of bryophytes? As in all plants the life cycle of bryophytes is diplobiontic (alternation of generations) and in bryophytes the lasting form is t
Pseudopodia – Protozoans Pseudopodia are flowing cytoplasmic protrusions of the cell causing amoeboid movement. In protozoans pseudopodia exist in several forms. The most fami
If a cell were placed in a hypertonic solution what could it do to protect itself?
Q. What are few examples of cnidarians? In which environments can these animals be found? Hydra, Jellyfish, sea anemones and corals are good examples. All of them are aquatic,
Fatty acids have four main biological roles: 1. They are used to create sphingolipids and glycerophospholipids which are necessary elements of biological membranes; 2. Nume
why are they called as pisces
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