Diatoms function to sequester a significant amount of global carbon dioxide because O Their silica shells are lined with perforations for gas exchange O Their silica shells are resistant to degradation O They are photoautotrophs O They are voracious predators that consume large amounts of methane producing bacteria

Q: Yeasts are classified as: Parasitic Worms Algae O Fungi Protozoa

A: yeast are classified as fungi .

Q: Why aren’t sponges eaten more by predators?a. They are protected by silica spicules.b. They are…

A: Sponge are multicellular aquatic animals that are member of phylum Porifera. Most sponges are…

Q: Poriferans and placozoans lack muscle cells and nerves. O True O False

A: Kingdom animalia is the Kingdom that contains organisms the following characteristics: They are…

Q: 1. How is genetic variation generated in ciliates? When * A. a micronucleus replicates its genome…

A: ALL RIGHT ANSWERS IN BOLD FRONTS.   1. How is genetic variation generated in ciliates? When *…

Q: Torsion is a unique feature of molluscs. O A. Yes O B. No

A: Mollusca (members are known as molluscs or mollusks) is the second-largest phylum of invertebrate…

Q: Protists with an eye spot and a light detector are Select one: O A stramenopiles O B. pellicles O C.…

A: Eukaryotes and prokaryotes are two categories of living creatures that are differentiated by the…

Q: :Cnidaria have no brain, so they Cannot move .a O Cannot chase their food .b O Must be solitary .c O…

A: Need to find cnidaria have no brain , so they related to what performance. Cnidaria has no brain.…

Q: Some poriferans obtain carbohydrates from cyanobacterial endosymbionts. True O False

A: Poriferans: Poriferans are called sponges and belong to the members of the phylum Porifera. They are…

Q: Protozoan motility structures include O pseudopods. O flagella. cilia, flagella, and pseudopods. O…

A: Protozoa involve single-celled eukaryotes. These live in various habitats ranging from fresh or…

Q: With which of the following is a dinoflagellate associated?(a) Most usually have flagella and can…

A: Dinoflagellates- They are single-celled eukaryotes and they can also prepare their food by the means…

Q: Cytochalasin D is a drug that inhibits the formation of microfilaments. One of the following…

A: Cytoskeleton in animals is mainly composed of three types of fibers -  1. Microtubules 2.…

Q: Bioluminescent dinoflagellates_______ . a. have a clear silica shell b. emit light when disturbed c.…

A: Dinoflagellates are eukaryotic protists with theca or lorica body structure and heterokont flagella.…

Q: Ciliatesa. move by pseudopods.b. are not as varied as other protists.c. feed and move using cilia.d.…

A: The ciliates are a group of protozoans distinguished by the presence of cilia called hair-like…

Q: Lamellibranch bivalve gills O trap suspended organic material sort particles are gas exchange…

A:

Q: Most molluscs have an external shell of some have an internal shell such as and and others don't…

A: Molluscs is a phylum that belongs to Non Chordates. They comprise the second largest phyla.Mollusc…

Q: By what process do starfish grow back lost arms? O budding O regeneration O binary fission O cloning

A: Starfish includes star-shaped organisms that belong to the phylum Echinodermata and the class…

Q: Use the cnidarian life cycle diagram in Figure 33.8 to determine the ploidy of a feeding polyp and…

A: Ploidy refers to number of copies of an autosome present in a cell of an organism. If single copy of…

Q: Forams (a) are endosymbionts that live in many marine invertebrates (b) were responsible for the…

A: Answer is C) secrete many chambered tests with pores through whivh cytoplasmic extensions project.

Q: Which of the following is a characteristic of an animal? Select ALL that apply. O Heterotrophs…

A: Animals are multicellular, eukaryotic heterotrophic organisms which feed on organic matter…

Q: Diplomonads have neither mitochondria nor hydrogenosomes. All ATP is produced in their cytoplasm.…

A: Diplomonads are anaerobic multi-flagellated eukaryotes that are mostly parasitic. They do not have…

Q: Which is true of Anthozoa? O A. all marine O B. cnidocytes in gastrodermis O C. medusae O D. All of…

A: Sea anemones, stony corals, and soft corals are all members of the Anthozoa class of marine…

Q: Which is/are true of the mollusc radula is a synapomorphy of Mollusca is situated in the foregut a…

A: The phylum mollusca is the second largest phylum of animals after arthropoda. It includes more than…

Q: Cool water, or "deep water" reefs tend to be built by... a) Photosynthetic corals b)…

A: Corals are colourful invertebrate animals belonging to the phylum Cnidaria. They are preyed by…

Q: Which is/are true of choanocytes of sponges: O produce spicules O produce sperm and eggs. trap…

A: Sponges are the organisms which belongs to the phylum porifera and these are multicell immobile…

Q: Earthworms are known to consume which of the following materials except: O living plant tissues…

A: From above question   Correct answer is living plant tissue(roots)

Q: The hydatid cyst is typically spread by O contaminated meat O protozoan-laden mosquitoes O infected…

A: Hydatid cysts are most commonly found in the liver and lungs, although they may also occur in other…

Q: What synapomorphies suggest that relatives of Metazoans? Choose all th Both store energy as starch.…

A: The most striking resemblance between fungus and mammals is their trophic level, or position in the…

Q: Which of the following is NOT one of the roles of algae in nature? O a. Petroleum is the fossil…

A: Introduction :  Features of algae : Body is relatively simple unicellular or multicellular thallus…

Q: If an earthworm were exposed to an acid and had damage to it's setae/chetae, then that earthworm;…

A: Setae of annelids are bristles that stiff on the body. In case of earthworms, they help in the…

Q: The vast majority of Rhizarians feed using long threadlike structures known as: pseudopodia O collar…

A: The vast majority of the Rhizarians feed using long threadlike structures known as:  Pseudopodia

Q: are members of the plankton community that can enter a metabolically dormant state within a…

A: Answer :  d.  Bacillariophyta.

Q: Give TWO BASIC (essential to an organism’s survival, i.e. without these, existence is not possible)…

A: Mollusca are the second largest animal phylum after arthropods. They can be terrestrial or aquatic.

Q: In which aspect do all protozoans definitely differ from animals?    a) Unicellularity b)…

A: Protozoans: Protozoa (singular protozoon or protozoan, plural protozoa or protozoans) are…

Q: The pennate diatoms lack motility, but the centric diatoms may possess motility O True O False

A:

Q: Turbellaria are flatworms that have most of their body filled with: O a. Alarge complex reproductive…

A: Turbellaria belongs to phylum Platyhelminthes and they are so named because they create turbulence…

Q: A lichen is a mutualistic symbiosis between O Amoebas and ciliates E. coli and insects O Algae and…

A: A lichen is a mutualistic symbiosis between Algae and fungi.

Q: Diatoms show tests of silica and pseudopodia that radiate from thei True O False

A: Any eukaryotic organism that is not a mammal, plant or fungus is a protist.

Q: Lamellibranch bivalve gills have the following functions: Particle trapping O Particle sorting Gas…

A: Gills are respiratory organ of aquatic organisms which help them in respiratory function  Types of…

Q: Ciliates A are not varied as other protists have a gullet for food gatherig C are closely related…

A: Question 6 explanation: Ciliates have an oral groove that is a mouth-like structure used for…

Q: The pigments, energy reserve products, and cell walls found in land plants are also characteristic…

A: Introduction A cell wall is a structural layer found just outside the cell membrane that surrounds…

Q: What is the MRCA of all of the animals within the Animal Kindom? O A. Archaebacteria O B. Ciliated…

A: The most recent common ancestor (MRCA), last common ancestor (LCA), or concestor of a set of…

Q: Radiolaria and diatoms have a shell of_______ . a. cellulose c. calcium carbonate b. silica d.…

A: Diatoms is a type of freshwater algae. The shell of diatoms is two different shapes round-shaped and…

Q: In which of the following utilize papulae and podia for gas exchange? O A. Crinoidea B. Asteroidea…

A: Sea animals have some specialized structures for the exchange of gases.

Q: Predator deterrents of sponges include: D. cilia B. antibiotics O E. periodic contraction/movement O…

A: Sponges are the most commonly known species that belongs to the phylum porifera. They are…

Q: In the liver fluke, the cercaria infect ants after leaving a snail (instead of the typical…

A: Questions related to the invertebrates.

Q: Vhich of the following terms apply to the body cavity of Molluscs (except Cephalopods)? Choose al…

A: It is second largest phylum and consists of diverse group of animals, around 50,000 living species.…

Q: A person has been cured of malaria, after 2 months a malarial attack has developed, although the…

A: Malaria is a vector-borne disease caused by the bite of infected anopheles mosquito, carrying the…

Modes of Nutrition

It is a biological process of providing or obtaining food that is necessary for growth and health. It includes many physiological processes - absorption, ingestion, assimilation, catabolism, excretion, etc. In biology, the science that deals with nutrition's physiological and chemical processes are called "nutritional science."