Which of these characteristics would most likely discourage self-pollination in a flower with both stamens and pistils?

A. long pistils and short stamens
B. many more stamens than pistils
C. determinant plants
D. long stamens and short pistils
E. wind pollination


Answer: A

Biology & Microbiology

You might also like to view...

The column of water extending in tubes from plant roots to leaves is maintained by ____

a. hydrophilic interactions b. ionic bonds c. covalent bonds d. hydrophobic interactions e. cohesion between water molecules

Biology & Microbiology

A mutation resulting in an inactive gene product is classified as __________

A) amorphic B) hypomorphic C) hypermorphic D) neomorphic E) dominant negative

Biology & Microbiology

A person who has AIDS contracts rare and often life-threatening infections because their helper T cell count is so low. Which of the following components of the immune response still respond to antigen despite the low helper T cell count?

a. Clonal expansion and antibody production b. Apoptosis of infected host cells c. Activation of cytotoxic T cells d. Clonal selection of B cells

Biology & Microbiology

Rheumatoid arthritis is the most threatening form of arthritis and often results in a replacement prosthesis of the damaged joint. Explain how this form of arthritis differs from other forms

What will be an ideal response?

Biology & Microbiology