Ferns and club mosses had an advantage over earlier plants because they developed
A) swimming sperm.
B) mitochondria.
C) flowers.
D) cones.
E) photosynthesis.
A
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The X-ray diffraction studies of the scientists named ________ and ________ were essential for the discovery of the structure of the DNA molecule
Fill in the blank(s) with correct word
Systemin can correctly be described as a(n)
A. peptide. B. carbohydrate. C. receptor. D. leaf lipid. E. apoplast.
Which of the following is an example of a species with r-selected adaptations?
A. gorilla B. blue whale C. cockroaches D. house fly E. horse
Drugs that block the function of oncogenic proteins hold great promise in the fight against cancer. Should cancer researchers also be attempting to design drugs that will interfere with the products of tumor suppressor genes? Explain
What will be an ideal response?