The cnidaria, jelly fish, are the first organisms to exhibit? a) an ectoderm layer b) endoderm layer with  digestive cells that release enzymes in to a digestive structure c) ectoderm cells that specialize to become cells which react to a stimulus and produce movement d) a water-based internal environment (prebiotic ocean) between the ectoderm and the endoderm e) all are true for cnidaria

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A: The term evolution can be defined as the  change in the features of different species over a long…

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Q: A)gills  B) jaws C)pharyngeal slits D)vertebrae E)lavar stage

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Q: an amniotic egg was crucial to the evolution of vertebrates because it provides the following to the…

A: The amniotic egg was the crucial evolutionary step that allowed the living organisms to breed…

Q: The urodeum is the  a.) Filtering organ that replaces the mammalian kidney b.) Middle chamber of…

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Q: fishing net brings up a soft bodied animal with a coiled external shell. How can you determine…

A: Cephalopods are only found in the ocean, whereas gastropods are mostly found on land, with a few…

Q: 1) What do you notice about the texture of its skin? 2) Why would this be advantageous?

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A: Need to find how primates can be distinguished from other mammals from the options given

Q: In the deuterostomes the digestive tract (Gut) forms from the cells of the a) ectoderm b) nerve…

A: Deuterostome are type of division of animals in which blastula of developing embryo becomes anus…

Q: In mammals , the evolution/ development of the organs of the digestive system is closely related to…

A: All of these specialisations are connected to digestive system development. Because the stomach was…

Q: Which pair shows endoparasites? a.)tick and mosquito b.)tapeworm and leech c.)leech and flea…

A:

Q: In the evolution of the vertebrates , the myocytes provide the stem cells for a) smooth mucscles…

A: The primary component of muscle tissue is the myocyte, often known as the muscle fiber. They are…

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A: Introduction:- Organisms can be multicellular or unicellular. Multicellular organisms are made up of…

Q: The

A: Introduction :- Brachiopods also called as lampshell which belongs to the phylum Brachiopods.…

Q: Trochophore larvae are characteristic of (a) arthropods (b) cnidarians (c) flatworms (d) mollusks…

A: Answer is d.)  mollusks.

Q: Which of the following exhibits embryonic development by the protostome pathway?

A: Embryo development is the term used to describe the many stages of embryo development. Animals and…

Q: profile-image For which organism and life stage would you expect to see the most rapid senescence?…

A: Introduction The slow decline of functional characteristics of living organisms is known as…

Q: Echinoderms have a water vascular system, which is a key trait of this phyla. Select the features of…

A: Echinoderms This refers to a phylum of marine invertebrates that includes starfish, brittle stars,…

Q: which of the following are animal characteristics? select all that apply?

A: Animals belong to the kingdom Animalia. Characteristics of animals are -  1.Animals are…

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: Cnidaria (jelly fish) have neuromuscular (nerve net) cells in their ectoderm. These cells are…

A: Cnidaria is a phylum of aquatic animals that includes jellyfish, sea anemones, corals and…

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A: We are given a situation in which we identified two specimens. One was identified as slug and…

Q: Which is NOT true about the acrchaeopteryx fossil: A) had jaws with sharp teeth B) had three fingers…

A: The objective of the question is to identify the incorrect statement about the Archaeopteryx fossil.

Q: Create a body plan table (Insert → Add Table) for the following animal phyla: Porifera, Cnidaria,…

A: Coelom can be defined as the principal body cavity that is present in most animals. It is located…

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Q: Asexual reproduction takes place through budding in:  (a) Amoeba(b) Yeast(c) Plasmodium(d)…

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A: The mouth develops first, and it goes through several larval stages in which it molts and regrows…

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Q: What is the role of segmentation and tagmatization in the evolutionary success of the arthropods?

A:

Q: Arthropods are the first phyla to possess: A)a brain B)an exoskeleton C)a complete digestive…

A: The organisms belonging to the phylum Arthropoda are characterized by the presence of pairs of…

Q: if an animal has no discernable plane of symmetry, then it would be: a)roundly symmetrical…

A: Symmetry is an essential part for dividing the organisms into different kingdom.

Q: In what chronological order did the following traits evolve? a) First the mesoderm, second the…

A: The correct option is C First the amnion, second the mesoderm, third the notochord and fourth…

Q: WORD FILL INS a) All chordates as embryos have the start of gills- what are these called? ____…

A: Vertebrates, tunicates, and lancelets are all members of the Chordates (Chordata) family of animals.…

Q: insect'

A: Insect are small animal with six legs, two pairs of wings and a body which is divided into three…

Q: Which of the following is an embryonic tissue found in animals?

A:

Q: Pharyngeal slits are which of the following?   Question 24 options:   a)  Openings in the…

A: Pharyngeal slit are opening in the pharynx that extend to the outside environment. In organisms that…

Q: An animal whose blastopore develops into a mouth and the second opening into the anus can be called…

A: Need to find the name of second opening in anus for the animals whose blastopore develops into a…

Q: Which of the following statements regarding the diversification of animals is supported by the…

A: Biodiversity improves ecosystem productivity by allowing each species, no matter how little, to play…

Q: What does the mesoderm have to do with the designation of a true coelom? A)The mesoderm gives rise…

A: The question is asking about the relationship between the mesoderm, one of the three primary germ…

Q: Which pair shows endoparasites? a.)tick and mosquito b.)tapeworm and leech c.)leech and flea…

A: Parasite is an organism that lives on or in a host organism and get its food from  its host.…

Q: The arthropods have a metameric body with segments organized into functional groups called

A: In this question, we have to answer a metameric  body with segments organised into functional groups…

Q: heck all the statements that can be attributed to the blastopore.   A)it becomes the mouth in…

A: The blastopore is a structure that appears in the early embryonic development of animals. It is the…

Q: Which is NOT a common characteristic of mammals? A) have small brains compared to skull size B) have…

A: The question is asking us to identify the statement that is not a common characteristic of mammals.…

Q: Which is NOT true about Hardrocodium?A) lived around 195 million years ago B) had a large brain…

A: The question is asking us to identify the incorrect statement about Hardrocodium, a prehistoric…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.