1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mel-nik [20]
3 years ago
7

Describe the three types of mammals. Give examples of each. How is reproduction/offspring different in each?

Biology
2 answers:
Slav-nsk [51]3 years ago
4 0
Extant mammals are divided into three subclasses based on reproductive techniques (monotremes, marsupials, and placentals) consisting of 27 orders. Within each order, families are organized by taxonomic relationship and distinguished by their genus and species.May 19, 2019
Example:- Koala. Although a lot of people call these animals koala bears, they are not actually born but instead are a type of marsupial. ...
Red Kangaroo. ...
Tasmanian Devil. ...
Wallabies. ...
Wombats.

Monotremes are mammals that lay eggs. ... These mammals have a pouch where their young grow and develop. Marsupials are hairy, warm blooded, and produce milk. One of the biggest differences between marsupials and placental mammals is that marsupials give birth quite early and rely less on the nourishment of the placenta.
Gennadij [26K]3 years ago
3 0

Answer:

1) Monotremes are mammals that lay eggs. The only monotremes that are alive  today are the spiny anteater, or echidna, and the platypus. These mammals are really different from other  mammals. Their body temperature is lower than most warm-blooded animals, a  feature that has more in common with reptiles. Their name comes from the fact  that they have only one body opening for both wastes and eggs to pass through.

2)  Marsupial mammals give birth to babies that are not completely developed.  The babies are very tiny. The babies then crawl up the fur on the mother's belly  into a pouch on the outside of the mother's abdomen. The babies drink milk from  the mother and continue to develop inside the pouch. Koalas, kangaroos, wallabies,  and opossums are some of the better-known marsupials.

3)A placental mammal develops inside its mother's body until its body systems  can function on their own. The name of this group comes from the placenta, an  organ in pregnant female mammals that passes materials between the mother and  the developing baby. Food and oxygen, carried by blood, pass from the mother to  the baby through the placenta. Most mammals, including humans, are placental  mammals.

Explanation:

You might be interested in
The cell walls of fungi are different than the cell walls of plants because they contain? A)The hard material of chitin B) Pores
torisob [31]
Fungi cell walls are made of chitin and other polysaccharides, not cellulose (Plants) or protein (Animals). Therefore your answer is-
 
"The cell walls of fungi are different than the cell walls of plants because they contain the hard material of chitin"
5 0
3 years ago
Water has a density of 1g/mL. There are four rocks that all have the same volume of 10 cubic centimeters. The mass for each of t
joja [24]

Answer:D

Explanation: Because it has the least amount of density in it. All the others are heavier, meaning they will sink. Just like if you drop a rock water and a feather, the feather will float.

Density def:

Density, mass of a unit volume of a material substance. ... Density offers a convenient means of obtaining the mass of a body from its volume or vice versa; the mass is equal to the volume multiplied by the density (M = Vd), while the volume is equal to the mass divided by the density (V = M/d).

3 0
3 years ago
Read 2 more answers
Explain the importance of decomposers in ecosystems. Include in your answer the role that mold plays in a forest.
IRINA_888 [86]
It creates decomposition, allowed things to be broken down. The mold helps with this process:)
7 0
4 years ago
Why did we need to measure the absorbance at two wavelengths during the beta-galactosidase lab?
Gnom [1K]

While the absorbance at 420 nm is related to the amount of o-nitrophenol produced, the absorbance at 600 nm is proportional to cell density, which aids in standardizing our estimations of enzyme activity.

<h3>Describe absorbance.</h3>

The amount of light absorbed by a solution is measured by its absorbance (A), often referred to as optical density (OD). The amount of light that may flow through a solution is called its transmittance.

<h3>How is the activity of beta-galactosidase determined?</h3>

The colorless ONPG substrate is changed by beta-Galactosidase into galactose and the chromophore o-nitrophenol, which results in a vivid yellow solution. The amount of substrate transformed at 420 nm can be calculated by measuring the solution's beta-galactosidase activity using a spectrophotometer or a microplate reader.

<h3>What is measured by the beta-galactosidase assay?</h3>

The -Gal Assay Kit gives users the tools they need to swiftly assess the amounts of active beta-galactosidase expressed in cells that have been transfected with plasmids encoding the lacZ gene.

learn more about absorbance here

<u>brainly.com/question/26830274</u>

#SPJ4

4 0
2 years ago
1. The role of an organism in the ecosystem 1 Called to
Naddik [55]

Answer:

niche

Explanation:

8 0
4 years ago
Other questions:
  • According to the theory developed by Charles Darwin, what process causes organisms to develop traits that help them adapt to cha
    11·2 answers
  • A cuboidal cell and a spherical cell have the same surface area to volume ratio, but the cuboidal cell has a greater volume than
    12·1 answer
  • A human red blood cell in an artery of the left arm is on its way to deliver oxygen to a cell in the thumb. from this point in t
    15·1 answer
  • Approximately how many known neurotransmitters are there
    14·1 answer
  • Which cell organelle puts amino acids together in a specific order to make proteins?
    10·1 answer
  • What would a similarity between a modern animal and a primitive animal suggest
    6·1 answer
  • Two examples of molecular biology
    14·1 answer
  • Bleach!!!!!!!!!!!!!!!!!!!!!!!!!​
    8·1 answer
  • En la meiosis, el entrecruzamiento (recombinación génica entre cromosomas) o crossing over ocurre durante la: *
    9·1 answer
  • Which of the following is a possible function of a protein?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!