The herbicide 2,4-D affects the metabolism of dicots and kills most of them. What is a common feature of plants that are susceptible to 2,4-D?
A) branching leaf veins
B) flower parts in threes
C) one cotyledon in the seed
D) vascular tissue scattered throughout the stem
Answer: A
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Crowding ____
a. has a positive effect on reproduction b. decreases the growth rate of individuals c. only occurs in plant species d. causes immigration e. stimulates developmental and behavioral changes
Identify the structure of the neuron marked A
a. axon terminal b. cell body c. axon d. glial cell e. dendrites
When the interaction is detrimental to the population of both species (- -), it is referred to as ________
Fill in the blank(s) with correct word
C4 plants conserve water by ________
A) shuttling CO2 from the Calvin cycle to the water-splitting photosystem B) keeping their stomata closed when the weather is hot and dry C) growing very deep roots D) running the Calvin cycle at night