1.The ................. of an adult sea star, a type of echinoderm, is on the upper surface of the animal. When a sea star is resting on the sea floor, its ...................aces the sea floor. 2.Technically, short-day plants flower when the _______ period _______ a critical period

Q: Venom glands may be adaptations of peculiar cell types to inject venom (Cnidarians)....what does…

A: In Cnidarians venom glands are small capsules filled with coiled, barbed threads that often contain…

Q: Number of eyes found in Earthworm........

A: Earthworms are organisms that belong to the phylum Annelida. They are mostly found in soil and…

Q: Sawfly larvae differ from Lepidoptera caterpillars | by having more prolegs. | by having…

A: Sawfly larvae ( belonging to order Hymenoptera) are immature stages of wasps or bees that have…

Q: The cnidaria, jelly fish, are the first organisms to exhibit? a) an ectoderm layer b) endoderm layer…

A: The earliest animals with muscles and nerves that could produce behavior were cnidarians.…

Q: The cells that pull the archenteron through the blastocoel in the sea urchin are _____ cells called…

A: The early stage in the development of the embryo is referred to as gastrulation. Gastrulation is a…

Q: Cnidocytes (a) are characteristic of sponges (b) are found among cells lining the gastrovascular…

A: The group of eukaryotic and multicellular organisms that are heterotrophic and belong to the kingdom…

Q: Meroblastic cleavage is typical of embryos formed from _______________ eggs. (a) moderately…

A: The egg is the vessel of the zygote, in which an embryo develops until it becomes mature enough to…

Q: Cuttlefish pen (invertebrate endoskeleton) is composed of (a) chitin (b) collagen (c) calcium…

A: The phylum mollusca (invertebrates) shows the presence of shell. The shell may be internal or…

Q: Nematodes and nematomorphs have which type(s) of skeletal system?    a.) Endoskeleton b.)…

A: Nematodes  Nematodes are pseudocoelomate and have complete digestive system with distinct mouth and…

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A: Step 1 Hello. Since you have posted a question with multiple subparts, we will solve the first three…

Q: Discuss the acrosomal reaction. Does this reaction occur in all vertebrates?

A: The process through which male and female reproductive cells or gametes converge to create a new…

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: Venom glands may be adaptations of modified ovipositors for venom injection in hymenopterans....what…

A: Answer: VENOM = It is the poisonous substance produced by many animals and insects which when…

Q: The fast block to polyspermy in sea urchins (a) is a depolarization of the egg plasma membrane (b)…

A: The egg's blocks to polyspermy (fertilization of an egg by more than one sperm) were originally…

Q: The absence of muscle tissue in cnidarians primarily reflects...

A: The correct answer is option B: The presence of only two germ layers.

Q: 4. The Malpighian tubules of insects     grind food into find particles before it goes to the…

A: *NOTE: Kindly repost for other questions. Dear Student as per the guidelines we are supposed to…

Q: insect'

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

Q: All of the cell types of an adult vertebrate develop from three primary embryonic germ cell layers,…

A: The three germ layers: ectoderm, mesoderm, and endoderm give rise to various tissues. The ectoderm…

Q: The following flatworm genera are monoecious, EXCEPT…    … Fasciola. … Dugesia. … Schistosoma. ……

A: A monoecious organism (plant or invertebrate animal) is one that has both the male and female…

Q: In the cnidaria the ectoderm cells are important because they can react to a stimulus (light) from…

A: Cnidaria possess two layers, endoderm and ectoderm. The gastrodermis, or inner lining, is formed by…

Q: Draw a see cucumber and label the major features visible on the animal. In particular, locate the…

A: Tube feet are small tube-like projections on the underside of echinoderms. They are part of the…

Q: . Identify the theme or themes exemplified by (a) thesharp quills of a porcupine, (b) the…

A: Biology is the scientific study of life and its related biological aspects. The interactions among…

Q: Read following statements A and B and choose the correct option. Statement-A : Taenia is…

A: Both Planaria and Taenia belong to the Platyhelminthes phylum in the animal kingdom.

Q: One of the characteristics unique to animals is(A) gastrulation.(B) multicellularity.(C) sexual…

A: Organisms are open systems that maintain homeostasis, are composed of cells, have a life cycle,…

Q: State the function of the following parts of the genus Romalea (grasshopper):

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Q: The developmental pattern of C. elegans is said to be mosaic because (a) development is controlled…

A: Introduction:- The nematode worm Caenorhabditis elegans is perfect for understanding the genetic…

Q: Which of the following is true about Sea urchin blastula formation and fate map? a) ectoderm that…

A: Sea urchins are spiny, round echinoderms in class Echinoidea. They show external fertilization and…

Q: The jelly like substance found between ectoderm and endoderm in Cnidarians is called the ___

A: Cnidarians are marine animals that belong to phylum Cnidaria and they have radial or biradial…

Q: Which steps would you take in the dichotomous key above to classify the following organism:…

A: Dichotomous key:It is a tool that asks a series of questions with two alternative responses to help…

Q: An additional notochord is grafted next to the developing neural tube. Answer the following…

A: The neural tube is an embryonic structure that eventually leads to the formation of the brain and…

Q: 1. Define sessile. Name an invertebrate with a sessile adult stage.

A: The term "sessile" is employed in biology to denote the absence of self-locomotion in an organism.…

Q: The water vascular system of echinoderms(A) functions as a circulatory system that distributes…

A: The term echinoderms refer to any marine animal that belongs to the phylum of Echinodermata. Some of…

Evolutionary adaptations

Evolutionary adaptation is the process through which organisms adapt or adjust to their surroundings to increase the chances of survival, mating, and reproduction. An organism's behavior, physiology, and structure are adjusted or changed to make it more suited to its environment.