Bivalves are often used as indicators of environmental quality. Based on your knowledge of bivalve gills, describe why bivalves are useful environmental indicator organisms.

Q: Why do anandromous lampreys die after breeding in the freshwater environment

A: Anadromous fishes are born in freshwater. They spend most of the time in salt water but they return…

Q: The device in the image is used to collect which of the following: Group of answer choices infauna…

A: Soil sieves are instruments that have a variety of uses. One of their uses is to collect sea animals…

Q: a) Gill lice infections result in lowered surface area to volume ratios in fish gill structure.…

A: Gill structure in fish is composed of thin, flat filaments that are highly vascularized. The…

Q: Is There Evidence of Selection for Defensive Adaptations inMollusc Populations Exposed to Predators?

A: From various, fossil records available there are multiple pieces of evidence that show predator-prey…

Q: Explain the relationship between the plant and animal parts of coral. And describe the symbiotic…

A: Corals are marine invertebrates which are sessile in nature. The structure of coral is made up of…

Q: Discuss the structure of coral reefs.

A: The largest coral system is the Great Barrier Reef has rich biodiversity including all types of…

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: Other than feeding and reproduction, could you suggest other possible reasons why marine fishes…

A: Marine fish migration is a complex behavior that involves movement from one habitat to another.…

Q: which lampreys are parasitic and which are not  in the Great Lakes?

A: The Great Lakes is a series of large interconnected freshwater lakes in the mid-east region of North…

Q: Sea pens are distinctly different from sea anemones in that sea pens are solitary, while anemones…

A: Sea pens and sea anemones are marine organisms belonging to the phylum Cnidaria but they belong to…

Q: What are three things we can do to help prevent the spread of jellyfish in the Earht's ocean?

A: The overpopulation of jellyfish is associated with human activities. The rise in the population of…

Q: 5 example of commercially important pelagic and demersal fishes.

A: The branch of biology that deals with the structure, function and evolution is called zoology. It…

Q: 82 81 83 80 O 79 78 75 76 77

A: Leeches have segmentation, they are parasitic or predator insects which belong to the order…

Q: the industrial and commercial importance of earthworms.

A: Earthworms are segmented worms that belong to the phylum Annelida. These are the common inhabitants…

Q: gs about sponges and Cnidarians. a) Pick one of these two groups, and state how they are important…

A: A geographic area where biotic as well as abiotic factors interact to form bubble of life is refers…

Q: Describe the life cycle of sea lampreys, Petromyzon marinus, and the history of their invasion of…

A: Introduction  Petromyzon comes under the taxa cyclostomes which means round mouth. Cyclostomes…

Q: Why coral reefs are found on the eastern coast of india and tamil nadu and not found in andra…

A: Corals are marine invertebrates that belong to the Phylum Cnidarians. They mostly live as colonies…

Q: What challenges do sea anemones face in their habit?

A: Sea anemones are found in both profound seas/ oceans and shallow coastal waters around the world.…

Q: Explain 3 possible reasons why coral reefs are so diverse?

A: Despite taking up less than 1% of our oceans, coral reefs are one of the planet's most diverse…

Q: Construct a dichotomous key for Chaetognatha families:

A: A dichotomous key is a scientific tool used to identify an organism based on its characters. A…

Q: If you had minimal resources to survive a disease related quarantine, as we’re currently…

A: Quarantine is the isolation of individuals that have arrived from an infectious disease affected…

Q: Explain how lungfishes are adapted to survive out of water

A: Animals are multicellular organisms. Animals are member of the kingdom Animalia. Fish is an aquatic…

Q: describe the environment within which this organism lives (relevant to the adaptation identified).

A: Adaptations are the changes which are brought about in different organisms with reference to those…

Q: What is the symmetry of this organism? What is the lifestyle of the organism (crayfish) in the…

A: Crayfish Crayfish belongs to the crustacean animals a group of arthropods. They are water animal and…

Q: Generate a discussion and conclusion about various types of parasitic helminths   include…

A: The scientific classification of animals begin in the late 18th century. At that time, animals were…

Q: Which of the following are NOT included in the Nekton? Sea snakes Copepods Great White Shark Penguin

A: Aquatic animals that can swim against the current and move independently of the surrounding water…

Q: What is the number and types of lamprey species that are present in the Great lakes?

A: ANSWER;- 1. 5 number present in the Great lakes. Many people believe the obtrusive ocean lamprey is…

Q: What symbiotic relationship do sharks and coral reef have?

A: The depends of two different species on each other is known as symbiosis. This kind of relationship…

Q: Lancelets (Cephalochordates) feed on: O a Sea weeds (algae). O b. Bacteria and dead organic…

A: Lancelets or cephalochordates are a type of filter feeders.

Q: What is the lifestyle of the organism (ammonite) in the  photo? (Select all that apply) (Hint:…

A: Ammonites are an extinct group of organisms. They are also known as ammonoid and belong to the group…

Q: Do the current conditions in the Gulf of Maine support the growth and survival of the soft shell…

A: Over the last few decades, the Gulf of Maine has warmed faster than 99.9% of the world's oceans.…

Q: Using the terms below, which of the following correctly lists the flow of water through a Bivalve…

A: The objective of the question is to identify the correct sequence of water flow through a Bivalve…

Q: Fill – up the taxonomic account of each echinoderm species representatives and label the visible…

A: Introduction :  Taxonomy is the way to classify organisms on the basis of similarity and…

Q: What type of survivorship curve do barnacles have? b. What details in the characteristics/life…

A: Barnacle follow types 3 survivalship curve ,  because they follow semelparous ( organism those breed…

Q: please label the visible parts of the internal and external anatomy of the squid shown in the photo

A: Introduction Squid is a type of cephalopods in the superorder Decapodiformes with elongated bodies,…

Q: Using these organisms listed make a food chain

A:

Q: Calcium carbonate is used by corals, shelled organisms, and a variety of other marine creatures to…

A: Climate change negatively affects the organisms which use calcium carbonate to construct tissue.

Q: List 3 environmental conditions that allow for good coral growth.

A: Corals marine invertebrate animals. They belong to the Phylum Cnidaria and obtain their nutrition…