Biology Quiz On Annelids!

Explanation
A grasshopper is not an annelid because it belongs to the class Insecta, while annelids belong to the phylum Annelida. Annelids are characterized by having segmented bodies and include organisms such as earthworms and leeches. Grasshoppers, on the other hand, belong to the phylum Arthropoda and have jointed legs and an exoskeleton. Therefore, grasshoppers do not possess the characteristics that define annelids.

Explanation
Annelids, which include segmented worms like earthworms and leeches, are part of the superphylum Lophotrochozoa. This superphylum is characterized by organisms that have either a lophophore (a feeding structure) or a trochophore larva (a type of larval stage). Annelids possess a trochophore larva during their development, which places them within the Lophotrochozoa superphylum. Ecdysozoa, Scalidophora, and Protozoa are not the correct superphyla for annelids.

Explanation
Lamarck is the correct answer because he is credited with being the first to formally describe and classify the annelids, a phylum of segmented worms. Lamarck's work on annelids, published in 1818, laid the foundation for the study of this group of organisms. Darwin, Beadle, and Baltimore are not associated with the founding of the annelid phylum.

Explanation
Annelids are actually worms with segmented bodies. This is a characteristic feature of annelids, distinguishing them from other types of worms. Therefore, the statement that Annelids are worms with non-segmented bodies is false.

Explanation
An annelid is defined by all of the characteristics mentioned in the options. Metamerism refers to the segmentation of the body, which is a defining feature of annelids. Protostomes are a group of animals that develop their mouth first during embryonic development, and annelids belong to this group. Coelomates are animals that have a true body cavity called a coelom, and annelids possess this characteristic as well. Therefore, all of the above characteristics define an annelid.

Explanation
The integumentary system relates to the epidermis. The integumentary system is the organ system that includes the skin, hair, nails, and glands. The epidermis is the outermost layer of the skin, and it is part of the integumentary system. It acts as a protective barrier for the body, preventing the entry of pathogens and regulating temperature. The integumentary system also plays a role in sensory perception and vitamin D synthesis. Therefore, the correct answer is Integument.

Explanation
Annelids are not similar to mammals. Annelids are a phylum of invertebrates that includes worms, such as earthworms and leeches. Mammals, on the other hand, are a class of vertebrates that give birth to live young and nurse them with milk. These two groups of animals have distinct characteristics and are not closely related. Therefore, the statement that Annelids are very similar to mammals is false.

Explanation
Nereis is commonly called a "Calm worm" because it is a type of marine polychaete worm that is known for its relatively peaceful and non-aggressive behavior. Unlike some other species of worms that may exhibit aggressive or territorial tendencies, Nereis worms are generally known to be calm and docile in nature. Therefore, "Calm worm" is the appropriate term to describe Nereis.

Explanation
Sanguivorous refers to the feeding mode of leeches, which means they feed on blood. This is a well-known characteristic of leeches, as they attach themselves to their host and suck blood for nourishment. Therefore, the statement "Sanguivorous is the mode of feeding in leech" is true.

Explanation
The first body segment of an earthworm is called the peristomium. This segment is located at the anterior end of the worm and surrounds its mouth. It is responsible for helping the earthworm to feed and sense its environment. The peristomium contains sensory structures such as papillae and prostomium, which assist in the detection of food and other stimuli.