« previous next »

Author Question: Internal and external fertilization both A) produce single-celled zygotes. B) oc (Read 505 times)

go.lag

  • Hero Member
  • *****
  • Posts: 667
on: Sep 28, 2013
Internal and external fertilization both
A) produce single-celled zygotes.
B) occur only among invertebrates.
C) occur only among terrestrial animals.
D) depend on the use of intromittent copulatory organs.
E) occur only among birds.


coco

  • Hero Member
  • *****
  • Posts: 739
Reply #1 on: Sep 30, 2013
For sure it has to be A Mark as solved once you're done!


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Kranz and Lörz first achieved in vitro plant fertilization Kranz and Lörz first achieved in vitro plant fertilization
Range of Motion of the Shoulder Joint, Internal Rotation Range of Motion of the Shoulder Joint, Internal Rotation
Range of Motion of the Shoulder Joint, External Rotation Range of Motion of the Shoulder Joint, External Rotation
Several common functional groups in a single biomolecule Several common functional groups in a single biomolecule
Preterm birth rates, by single and multiple births, Canada Preterm birth rates, by single and multiple births, Canada
Some Single-Gene Defects for Which Genetic Tests Some Single-Gene Defects for Which Genetic Tests
Video: Cerebral Cortex Animation

For a complete list of videos, visit our video library