What is the relationship between an Ascocarp and an Apothecium?
What is the relationship between an ascocarp and an apothecium? An apothecium is a cup-like fungus that has ascu lining the upper surface; it is a cup-like ascocarp. How does the fungal component of a lichen obtain its food?
What is the relationship between tentacles and Cnidocytes?
Cnidarians contain specialized cells known as cnidocytes (“stinging cells”), which contain organelles called nematocysts (stingers). These cells are present around the mouth and tentacles, serving to immobilize prey with toxins contained within the cells.
What is the relationship between the carapace and the process of Ecdysis?
(2) Ecdysis, or the actual shedding of the old exoskeleton, takes place when the old exoskeleton splits along preformed lines. In the lobster it splits between the carapace and the abdomen, and the body is withdrawn through the hole, leaving the old exoskeleton almost intact.
Where do the larval forms of cicadas members of Order Hemiptera live and what do they feed on?
Periodical cicadas are best known for their extraordinary, highly synchronized life cycles. They spend most of their lives—13 or 17 years, depending on the species—in larval form, burrowed beneath the soil and feeding on fluids from plant roots.
How does apothecium differ from cleistothecium?
The key difference between apothecium and cleistothecia is that apothecium is capable of shooting out spores while cleistothecia are not capable of shooting out spores. Ascomycota is one of the phyla of fungi. Overall, apothecium and cleistothecia are two types of structures that bear spores of Ascomycota fungi.
What is the difference between Hydrozoa and scyphozoa?
Explanation: The hydrozoans has sexual medusa stage and non sexual polyp stage whereas scyphozoan polyp has reduced asexual polyp stage. The hydrozoan polyp are found in the marine as well as in the freshwater whereas the scyphozoan polyp is found in the marine water only.
What is the difference between porifera and Cnidaria?
Cnidaria and porifera are two different phyla. Cnidarians have Cnidocytes but not the poriferans. Cnidarians have well-organized organ systems but not the poriferans; on the other hand, poriferans have an efficient tunnel system made up of pores but not the cnidarians.
What is the difference between ecdysis and metamorphosis?
As nouns the difference between ecdysis and metamorphosis is that ecdysis is the shedding of an outer layer of skin in snakes and certain other animals; moulting while metamorphosis is a transformation, such as that of magic or by sorcery.
What happens during ecdysis?
Ecdysis is the process of an arthropod moulting its exoskeleton. Their existing cuticle weakens at specific points and by taking in water or air the animal splits its old exoskeleton. The animal then extracts itself from the old skin and inflates its new skin.
What role do cicadas play in the ecosystem?
Cicadas are not dangerous and can provide some environmental benefits including: Cicadas are a valuable food source for birds and other predators. Cicadas can aerate lawns and improve water filtration into the ground. Cicadas add nutrients to the soil as they decompose.
What causes cicadas to emerge?
The molecular clock keeps track of the passage of years. The accumulation of 13 or 17 years triggers the emergence of fifth instar nymphs. The day of emergence is triggered by accumulated ground temperature. This was demonstrated by James Heath in a study published in 1968.”