Since purple and green bacteria do not use water in their autotrophic processes, they are not photosynthetic
Indicate whether the statement is true or false
F
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Which of the following is a characteristic of octopuses and squid?
a. an open circulatory system b. a closed circulatory system c. the presence of mesohyl d. a single heart
Which of the following is an example of mechanical digestion?
A) the breakdown of proteins into amino acids B) peristalsis C) the digestion of fats by lipases D) chewing
Which feature do scientists mainly consider when grouping organisms according to evolutionary classification?
a) population size b) common ancestry c) identical niche d) similar bone structure
A true-breeding strain of red tulips is crossed to a true-breeding strain of white tulips. All the offspring have pink flowers. When a pink-flowered plant is self-fertilized, the offspring have red, pink, and white flowers, in the ratio 1:2:1. This type
of inheritance is an example of ________. Fill in the blank(s) with correct word