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Define Class Turbellaria - Flatworms ?
Members of these two Classes are known as the flukes. Flukes are parasitic flatworms that inhabit tropical areas like Southeast Asia and North Africa. Flukes may live part of their lives in one or more hosts such as humans, livestock, or even snails, and part of their lives in the open, usually a water body.
The parasitic lifestyle is reflected in the types of structures that these animals have, as well as in the types of structures they lack. A parasite that lives in the digestive tract of another animal doesn't necessarily need eyes or other sensory organs to help it locate prey or avoid predators. If an animal lives in a nutrient-rich environment such as the gut of its host, it may not need a mouth and digestive tract of its own; on the other hand, it may require a protective cuticle to avoid being digested. Many parasitic species have special adaptations, such as hooks and suckers to help in anchoring themselves in the gut of the host. Since flukes parasitize several intermediate hosts, of which one is usually a free-living snail, flukes must produce tremendous numbers of offspring to reproduce successfully.
describe the discovery of new fossil evidence for evolution
Explain Gelation Gelation, which occurs when yolk is frozen and thawed, is apparently due to the aggregation of yolk lipoproteins because of the imbalance and shift in water.
In a numeric pyramid to which trophic level does the base always refer? What about the top level? In a numeric pyramid the base corresponds to the first trophic level, i.e., to
Q. What are the periods of the second meiotic division? Meiosis II is divided into metaphase II, prophase II, anaphase II and telofase II.
Larval forms - Porifera In the majority of sponges the larval stage develops in the body of the parent. The larva is generally at the blastula stage of development. Figure dis
Define Diagnostic Criteria for Bulimia Nervosa? 1. Recurrent episodes of binge eating. An episode of binge eating is characterized by both of the following a) Eating, in a d
write about asexual reproduction in mucor?
Q. Concerning their size and basic morphology how and why do the male and the female gametes differentiate from each other? The female gametes are big cells full of vitellus (n
When an individual is exposed to foreign serum antigen then a combination of symptoms are produced which is known as serum sickness.
In yeast, a new mutation called suc was recently discovered. The suc mutant cannot use sucrose as a source of carbon, and will not grow if the culture medium contains only sucrose
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