Question

The Porifera (sponges) are the first organisms to exhibit: a) specialized germ layers, b) amoebacyte cells...

The Porifera (sponges) are the first organisms to exhibit: a) specialized germ layers, b) amoebacyte cells that move through the colony releasing collagen and Calcium Carbonate outside the cell, c) neuromuscular cells, d) a digestive tube, e) Brain cells.

Homework Answers

Answer #1

Answer - b, amoebacyte cells that move through the colony releasing collagen and calcium carbonate outside the cell.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1) In the Cnideria (jelly fish) have neuromuscular (nerve cells) cells in their ectoderm. These cells...
1) In the Cnideria (jelly fish) have neuromuscular (nerve cells) cells in their ectoderm. These cells s evolve into a) the lungs, b) the pancreas and liver, c) the brain and spinal cord system, d) the digestive tract, e) is not important in the process of evolution. 2) The area of the Central Nervous System (CNS) that automatically regulates breathing and heart rate to maintain homeostasis is which of the following? a) Cerebral Cortex b) Medulla oblongata, c) Cerebellum, d)...
The scientific method is best distinguished from earlier forms of knowledge by Accurate measurements              b. inductive...
The scientific method is best distinguished from earlier forms of knowledge by Accurate measurements              b. inductive reasoning           c. deductive reasoning d. publishing of results                 e. experimentation Which one word best describes a tentative explanation of the data? a. control        b. deduction    c. theory          d. placebo       e. hypothesis An explanation which has been widely tested, which is not found to be false, and which explains a large group of observations is called                      a. quantitative analysis           b. a theory Qualitative...
A. Amnion B. Anterior Visceral endoderm C. BMP D. Chorion E. Columnarization F. Cyclopy G. Dorsal...
A. Amnion B. Anterior Visceral endoderm C. BMP D. Chorion E. Columnarization F. Cyclopy G. Dorsal ventral mesoderm H. Growth cone I. Hensons’ node J. Intermediate K. Koller’s Sickle L. Mantle M. Marginal N. Paraxial O. Rhombomeres P. Secondary Q. Spina bifida R. Wnt 1. The area which acts as the organizer in the mammalian embryo is _______. 2. The ____________, an extraembryonic membrane surrounds the embryo and is formed by the ectoderm and mesoderm. 3. In the vertebrates, the...
In the ausculatory method, the point at which the first soft tapping sounds can be heard...
In the ausculatory method, the point at which the first soft tapping sounds can be heard with the stethoscope is the: Systolic blood pressure Diastolic blood pressure Absolute blood pressure Systolic over diastolic blood pressure None of the above Lymph capillaries A. weave between tissue cells and blood caillaries B. Have flap-like mini-valves C. are anchored to connective tissue by filaments D. pick up excess tissue fluids E. All of the above Lymph nodes: A. Filter lymph before returning fluid...
Can you paraphrase the following rationale for me: Male Reproductive System 1. Which of the following...
Can you paraphrase the following rationale for me: Male Reproductive System 1. Which of the following accurately describes spermiogenesis? a. Occurs before puberty b. Involves stem cells, meiosis, and spermatogenesis c. Involves cytodifferentiation of early spermatids d. Occurs in diploid cells e. Results in the formation of primary spermatocytes Rationale: Spermatogenesis, the first part of sperm production involves mainly mitosis and meiosis and is followed by spermiogenesis, the final differentiation process occurring in the haploid male germ cells. Spermatogenesis begins...
Question 38 Gluconeogenesis, the formation of glucose from fats and proteins, is due to the action...
Question 38 Gluconeogenesis, the formation of glucose from fats and proteins, is due to the action of ________. Select one: A. secretin B. cortisol C. insulin D. aldosterone Question 39 Normal development of the immune response is due in part to hormones produced by the ________. Select one: A. pancreas B. thymus gland C. thyroid gland D. adrenal medulla Question 40 Most amino acid-based hormones exert their signaling effects through intracellular ________. Select one: A. nucleotides B. calcium C. second...