Non-Chordata I (Porifera to Annelida) — Practice Questions
Free NEET Biology multiple-choice questions on Non-Chordata I (Porifera to Annelida). Attempt each question and reveal the answer with a full explanation.
In contrast to Annelids the Platyhelminths show Absence of body cavity Presence of pseudocoel Radial symmetry Bilateral symmetry Which of the following organs is NOT present in the Phylum Echinodermata? Specialized excretory system Digestive system Water vascular system Nervous system In which phylum do adults show radial symmetry, but larvae exhibit bilateral symmetry? Echinodermata Mollusca Arthropoda Annelida Which of the following characteristics is NOT shared by both Annelids and Arthropods? Jointed appendages Bilateral symmetry Segmented body Triploblastic organization Parasitic Platyhelminthes like Taenia possess which of the following for attachment to the host? Hooks and Suckers Parapodia Tentacles Radula In Hemichordates, the organ of excretion is the: Proboscis gland Flame cells Nephridia Malpighian tubules Identify the animal that belongs to the Phylum Mollusca and is commonly known as the 'Pearl Oyster': Pinctada Pila Sepia Loligo In Arthropoda, excretion takes place through: Malpighian tubules Nephridia Flame cells Gastrovascular cavity High regeneration capacity is a hallmark feature of which of the following animals? Planaria Taenia Fasciola Ascaris Which phylum is characterized by the absence of a body cavity, making them 'acoelomates'? Platyhelminthes Aschelminthes Annelida Arthropoda The scientific name of the 'Apple Snail' is: Pila Pinctada Sepia Aplysia Biradial symmetry and lack of cnidoblasts are the characteristics of- (1) Starfish and sea anemone (2) Ctenoplana and Beroe (3) Aurelia and Paramecium (4) Hydra and starfish Water vascular system is the most distinctive feature of: Echinodermata Porifera Chordata Mollusca Which of the following annelids is a blood-sucking parasite? Hirudinaria Pheretima Nereis Aphrodite Identify the amoeboid protozoan that is parasitic and lives in the human intestine, causing amoebic dysentery: Entamoeba histolytica Amoeba proteus Trypanosoma Plasmodium In bacteria, specialized elongated tubular structures used for the transfer of genetic material during conjugation are called: Pili Fimbriae Flagella Cilia In prokaryotes, the special membranous structure formed by the extension of the plasma membrane into the cell is the Mesosome Inclusion body Genophore Plasmid In prokaryotes, which of the following structures helps in attaching the bacteria to rocks in streams and also to host tissues? Fimbriae Mesosomes Flagella Pili In the Gram staining procedure, the ability of some bacteria to retain the crystal violet-iodine complex is primarily due to the presence of a thick layer of: Peptidoglycan Lipopolysaccharides Teichoic acid Mycolic acid The cell wall of fungi is a polymer of: N-acetylglucosamine N-acetylmuramic acid Glucose Fructose Which of the following is NOT a function of the Mesosome in prokaryotic cells? Protein synthesis Cell wall formation DNA replication and distribution to daughter cells Respiration and secretion processes What is the primary function of fimbriae in bacterial cells? To help attach the bacteria to rocks or host tissues To provide motility through liquid media To facilitate the exchange of genetic material To protect the cell from phagocytosis Which one of the following groups of animals is bilaterally symmetrical and triploblastic ? Sponges Coelentrates (Cnidarians) Aschelminthes (round worms) Ctenophores The outer layer of the cell envelope in many bacteria, which may be a loose sheath or thick and tough, is called the Glycocalyx Mesosome Peptidoglycan Plasma membrane Which of the following is NOT a function of the mesosome in prokaryotes? Synthesis of proteins Cell wall formation DNA replication and distribution Respiration and secretion In which of the following groups of animals is a 'Venous Heart' found, where the heart only pumps deoxygenated blood? Fishes Amphibians Reptiles Birds Which type of leucocytes are primarily involved in allergic reactions and secretes histamine, serotonin, and heparin? Basophils Eosinophils Monocytes Neutrophils Which of the following organisms are 'Uricotelic', excreting nitrogenous waste as uric acid pellets or paste with minimum loss of water? Reptiles, Birds, Land Snails, and Insects Mammals, Terrestrial Amphibians, and Marine Fishes Aquatic Amphibians and Aquatic Insects Bony fishes and Protozoa Which of the following is the most abundant white blood cell (leukocyte) in human blood? Neutrophils Lymphocytes Monocytes Eosinophils Flame cells (Solenocytes) are the excretory structures in which of the following organisms? Platyhelminthes Annelids Arthropods Molluscs The mechanism of 'Haplodiploidy' for sex determination is found in which of the following organisms? Honey bees Grasshoppers Birds Drosophila Which of the following is an example of an endoparasite? Plasmodium in human RBCs Lice on humans Ticks on dogs Cuscuta on hedge plants Identify the group of organisms that are all examples of ectoparasites: Lice on humans, Ticks on dogs, Cuscuta on hedge plants Liver fluke, Tapeworm, Roundworm Plasmodium, Lice, Ticks Cuscuta, Tapeworm, Lice Bilaterally symmetrical and acoelomate animals are exemplified by Platyhelminthes Aschelminthes Annelida Ctenophora Which of the following is an example of an ectoparasite found on marine fish? Copepods Liver fluke Plasmodium Tapeworm Parasites often evolve special adaptations to survive. Which of the following is a characteristic adaptation of an endoparasite like a Tapeworm? Loss of unnecessary sense organs and digestive system Development of complex locomotory organs Low reproductive capacity Presence of a high-efficiency respiratory system Technically, female mosquitoes are not considered parasites even though they bite humans for blood. This is because: Blood is required only for reproduction, not as food They do not live on the surface of the host They do not cause any harm to the human host They spend only a short time on the host body If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is : Slimy mucus excretory fluid Coelomic fluid haemolymph Which one of the following correctly described the location of some body parts in the earthworm Pheretima ? Two pairs of accessory glands in 16–18 segments Two pairs of testes in 10 th and 11 th segments. Four pairs of spermathecae in 4–7 segments One pair of ovaries attached at intersegmental septum of 14 th and 15 th segments. Following are the statements about prostomium of earthworm. (a) It serves as a covering for mouth. (b) It helps to open cracks in the soil into which it can crawl. (c) It is one of the sensory structures. (d) It is the first body segment. Choose the correct answer from the options given below. (a), (b) and (d) are correct (a), (b), (c) and (d) are correct (b) and (c) are correct (a), (b) and (c) are correct The phenomenon of 'Torsion', which results in the rotation of the visceral mass by 180 , is a characteristic of which class of Mollusca? Gastropoda Pelecypoda Cephalopoda Polyplacophora The human liver fluke, a trematode parasite, depends on which two intermediate hosts to complete its life cycle? Snail and fish Mosquito and snail Pig and cow Fish and mosquito Sponges exchange O2 with CO2 by . simple diffusion over their entire body surfaces moist cuticle tracheal tubes gills Match List - I with List - II array ll List -I & List -II (a) Metamerism & (I) Coelenterata (b) Canal system & (ii) Ctenophora (c) Comb plates & (iii) Annelida (d) Cnidoblasts & (iv) Porifera array Choose the correct answer from the options given below. a-iii, b-iv, c-i, d-ii a-iii, b-iv, c-ii, d-i a-iv, b-i, c-ii, d-iii a-iv, b-iii, c-i, d-ii Consider the following statements : A. Annelids are true coelomates B. Poriferans are pseudocoelomates C. Aschelminthes are acoelomates D. Platyhelminthes are pseudocoelomates Choose the correct answer from the options given below : B only A only C only D only Identify the incorrect statement regarding the Phylum Annelida: All annelids are strictly monoecious They possess longitudinal and circular muscles for locomotion Circulatory system is of closed type Nephridia help in osmoregulation and excretion Which of the following is NOT a function of the water vascular system in Echinoderms? Excretion of nitrogenous wastes via specialized organs Locomotion Capture and transport of food Respiration The epidermis of Ascaris is characterized as being: Syncytial Simple squamous Ciliated Stratified