Which of the following statements is true about insects that feed internally in plants?
a. Always endopterygotes (complete metamorphosis)
b. Almost always larve
c. Only Coleoptera (beetles) and Lepidoptera
d. Both a and b
e. All of the above
Ans: d. Both a and b
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One result of the oxidation of reduced sulfur compounds is a rise in the pH of the medium
Indicate whether the statement is true or false.
Distinguish between the structure of a duplicated chromosome before mitosis and the chromosome produced by separation of two chromatids during mitosis.
What will be an ideal response?
Which statement is NOT true about cartilage?
A. The matrix of cartilage includes calcium salts. B. The matrix of cartilage is both solid and flexible. C. Adult bodies possess structures that are made up of cartilage such as the nose, ear, and pads between the vertebrae in the backbone. D. The human fetal skeleton is made up of cartilage. E. Cartilage cells are located in small spaces called lacunae.
Gastrulation produces ____.
A. hollow balls of cells B. embryos with three primary tissue layers C. solid balls of cells D. specific organs E. dead tissue