« previous next »

Author Question: Double fertilization means that A) flowers must be pollinated twice to yield fru (Read 661 times)

curlz

  • Hero Member
  • *****
  • Posts: 538
on: Aug 14, 2013
Double fertilization means that
A) flowers must be pollinated twice to yield fruits and seeds.
B) every egg must receive two sperm to produce an embryo.
C) one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei.
D) the egg of the embryo sac is diploid.
E) every sperm has two nuclei.


mydiamond

  • Hero Member
  • *****
  • Posts: 804
Reply #1 on: Aug 22, 2013
I know it's C,

Shine bright :)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

ATP yield per molecule of glucose at each stage of cellular respiration. ATP yield per molecule of glucose at each stage of cellular respiration.
Blue Flowers Blue Flowers
In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th
Diagram of a cell membrane. The cell membrane is a double layer of phospholipid molecules with ... Diagram of a cell membrane. The cell membrane is a double layer of phospholipid molecules with ...
Structure of the E. coli Tus protein, complexed with double-stranded DNA Structure of the E. coli Tus protein, complexed with double-stranded DNA
Artificial cross-fertilization of pea plants Artificial cross-fertilization of pea plants
Video: How to find out if a population is evolving?

For a complete list of videos, visit our video library