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
katrin2010 [14]
3 years ago
6

Why is there no external male reproductive organ in a frog?

Biology
1 answer:
Morgarella [4.7K]3 years ago
3 0
Frogs reproduce by a special kind of embrace called "amplexus" which is an external fertilization that does not occur inside the female's body.

During mating (amplexus), the male frog grasps the female frog's trunk with his forelimbs.
The female frog discharges eggs into the water and then the male frog sheds the sperms over those eggs.


You might be interested in
Based on the phylogenetic tree, identify approximately how many millions of years ago the earliest south Asian river dolphin evo
Fynjy0 [20]

my guess is that it is 130 Million

8 0
3 years ago
Mendel observed that pairs of alleles were separated or segregated in gametes and that they were rejoined in fertilization. we k
alexira [117]
Homologous chromosomes....meiosis
3 0
3 years ago
1. The basic building block of matter are atoms. Every atom is basically a tiny sphere. Every atom is composed of 2 regions, the
Cerrena [4.2K]

1. The basic building block of matter are atoms. Every atom is basically a tiny sphere. Every atom is composed of 2 regions, the outer part of the sphere is called the electron cloud and accounts for about 99.95% of the volume of an atom.

2. The electron cloud is the region of an atom in which the electron(s), are found. Electron(s), are tiny particles with a -1 electrical charge and almost no mass. Electricity is electron(s), flowing though a conductor, usually metal.  

3. Every atom is composed of 2 regions. The very tiny center part of the spherical atom is called the nucleus. The nucleus accounts for about 99.95% of the mass of the atom even though it has almost no volume.

4. Every atom has a nucleus. The nucleus contains 2 different types of particles. The particle with the +1 electrical charge is called the proton. It has almost 2000 times more mass than an electron. The number of protons in the nucleus determine how many electrons the neutral atom has and all of the chemical reactions the atom can do.  

5. Every atom has a nucleus. The nucleus contains 2 different types of particles. The particle with no (0) electrical charge is called the neutron. This particle is electrically neutral. The +1 charged protons would repel each other and destroy the nucleus if the neutrons were not neutralizing the repulsive force between the protons.  

6. When graphing how the experimental “effect” depends on the experimental “cause”, the graph can show either a direct relationship or an inverse relationship or no relationship. If the “effect” (dependent variable) value increases when we make the “cause” (independent variable) value increase, then we call this a direct relationship.  

7. When graphing how the experimental “effect” depends on the experimental “cause”, the graph can show either a direct relationship or an inverse relationship or no relationship. If the “effect” (dependent variable) value decreases when we make the “cause” (independent variable) value increase, then we call this an inverse relationship.  

8. When graphing how the experimental “effect” depends on the experimental “cause”, the graph can show either a direct relationship or an inverse relationship or no relationship. If the “effect” (dependent variable) value doesn’t change when we make the “cause” (independent variable) value increase, then we call this no relationship.  

9. An experiment needs an experimental control to validate its results. The experimental control can be one of 2 things. The experimental control can be a set of experimental conditions we repeat several times throughout the experiment. Or the experimental control can be a set of conditions which other experimenters have used and is considered “normal” or “state of the art.”

10. A variable is something which can change during an experiment. It works best when we only let 2 variables change. All the rest are kept constant and are called controlled variable(s).  

5 0
3 years ago
_______ is/are the raw material of evolutionary change. xx xxxxxxxxx xxxxxx xx xxxxxxxxxxx xxxxxx C. Genetic drift D. Mutations
alexandr1967 [171]
D. mutations is the answer
6 0
3 years ago
Read 2 more answers
If an organism has a haploid number of 10, how many chromosomes are in their body cells
rjkz [21]

Answer:

Chromosome number

These 46 chromosomes are organized into 23 pairs: 22 pairs of autosomes and 1 pair of sex chromosomes. The sex cells of a human are haploid (n), containing only one homologous chromosome from each pair. Hope this helped! :))  

Explanation:

6 0
2 years ago
Other questions:
  • Mammals in Australia are called marsupials, and diverged from the placental mammals very early in mammalian evolution. Australia
    8·1 answer
  • Help me please!!!!!<br><br> 20 POINTS!!!! Plus brainliest!!!<br><br> Thanks in advance!!
    9·1 answer
  • PLEASE HELP ME!!!!!what is he function of white blood cell??????
    7·2 answers
  • What is one way to that changes can occur in a DNA sequence
    15·1 answer
  • Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, t
    5·1 answer
  • Scientists who rely on creativity also tend to be persistent when they pursue a research goal. How might persistence be an advan
    9·2 answers
  • What type of solution is this cell sitting in?
    13·1 answer
  • At what pH values is lipase likely to be denatured? justify your answer
    15·1 answer
  • Select the correct answer.
    14·1 answer
  • Metamorphic rocks is changed into igneous rock by
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!