A genus of primarily wind-pollinated plants includes one unusual species that has evolved to be pollinated by insects. Several morphological changes have accompanied this adaptation. The ______________ are more colorful, there is a nectary at the base of the ______________, the ________________ are shorter and produce sticky pollen, and the __________________ are stickier for enhanced pollen capture.
A. petals, stamens, sepals, carpels
B. petals, sepals, stamens, carpels
C. stamens, carpels, petals, sepals
D. petals, sepals, carpels, stamens
B. petals, sepals, stamens, carpels
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Answer the following statements true (T) or false (F)
1. The movement of DNA polymerase continues unimpeded if a thymine dimer is present in the DNA double helix. 2. Cells are normally limited to one DNA repair system that corrects DNA mistakes. 3. Patients who suffer from xeroderma pigmentosum (XP) have a defective mismatch repair system. 4. Cancers originate from a single cell.
What is the correct order of these meiotic events?
A Segregation of homologous chromosomes to opposite poles. B Segregation of sister chromatids to opposite poles. C Alignment of homologous pairs on the midplate of the cell. D Pairing and synapsis of homologous chromosomes. E Condensation of chromosomes in a diploid nucleus. A) CDEAB B) DCEBA C) EDCBA D) EDCAB E) DCABE
What is the female organ of intercourse which also serves as the birth canal?
a. vagina b. cervix c. uterus d. oviduct e. clitoris
Which of the following is/are false?
What will be an ideal response?