« previous next »

Author Question: Recent research has shown that pollination requires that carpels recognize polle (Read 516 times)

curlz

  • Hero Member
  • *****
  • Posts: 538
on: Aug 14, 2013
Recent research has shown that pollination requires that carpels recognize pollen grains as "self or nonself." For self-incompatibility, the system requires
A) the rejection of nonself cells.
B) the rejection of self cells.
C) carpel incompatibility with the egg cells.
D) that the flowers be incomplete.
E) the union of genetically identical sperm and egg cells.


Celeste

  • Hero Member
  • Posts: 588
Reply #1 on: Aug 22, 2013
I know it's B,

Shine bright :)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Brain cells of a laboratory mouse are shown glowing with multicolor fluorescent proteins Brain cells of a laboratory mouse are shown glowing with multicolor fluorescent proteins
Dermatological changes with myxedema can occur behind the eyes or in the lower leg, as shown here. Dermatological changes with myxedema can occur behind the eyes or in the lower leg, as shown here.
Recent Migration Patterns Recent Migration Patterns
Viruses, such as the hepatitis B virus shown here, need a host to survive and multiply Viruses, such as the hepatitis B virus shown here, need a host to survive and multiply
Variable expressivity as shown in flies homozygous for the eyeless mutation in Drosophila Variable expressivity as shown in flies homozygous for the eyeless mutation in Drosophila
Video: DNA fingerprinting Animation

For a complete list of videos, visit our video library